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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.12742">arXiv:2004.12742</a> <span> [<a href="https://arxiv.org/pdf/2004.12742">pdf</a>, <a href="https://arxiv.org/format/2004.12742">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Hit-time and hit-position reconstruction in strips of plastic scintillators using multi-threshold readouts </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Chhokar%2C+J">J. Chhokar</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Farbaniec%2C+K">K. Farbaniec</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a> , et al. (10 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2004.12742v1-abstract-short" style="display: inline;"> In this article, a new method for the reconstruction of hit-position and hit-time of photons in long scintillator detectors is investigated. This research is motivated by the recent development of the positron emission tomography scanners based on plastic scintillators. The proposed method constitutes a new way of signal processing in Multi-Voltage-Technique. It is based on the determination of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.12742v1-abstract-full').style.display = 'inline'; document.getElementById('2004.12742v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.12742v1-abstract-full" style="display: none;"> In this article, a new method for the reconstruction of hit-position and hit-time of photons in long scintillator detectors is investigated. This research is motivated by the recent development of the positron emission tomography scanners based on plastic scintillators. The proposed method constitutes a new way of signal processing in Multi-Voltage-Technique. It is based on the determination of the degree of similarity between the registered signals and the synchronized model signals stored in a library. The library was established for a set of well defined hit-positions along the length of the scintillator. The Mahalanobis distance was used as a measure of similarity between the two compared signals. The method was validated on the experimental data measured using two-strips J-PET prototype with dimensions of 5x9x300 mm$^3$. The obtained Time-of-Flight (TOF) and spatial resolutions amount to 325~ps (FWHM) and 25~mm (FWHM), respectively. The TOF resolution was also compared to the results of an analogous study done using Linear Fitting method. The best TOF resolution was obtained with this method at four pre-defined threshold levels which was comparable to the resolution achieved from the Mahalanobis distance at two pre-defined threshold levels. Although the algorithm of Linear Fitting method is much simpler to apply than the Mahalanobis method, the application of the Mahalanobis distance requires a lower number of applied threshold levels and, hence, decreases the costs of electronics used in PET scanner. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.12742v1-abstract-full').style.display = 'none'; document.getElementById('2004.12742v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.10754">arXiv:1807.10754</a> <span> [<a href="https://arxiv.org/pdf/1807.10754">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TMI.2018.2837741">10.1109/TMI.2018.2837741 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evaluation of Single-Chip, Real-Time Tomographic Data Processing on FPGA - SoC Devices </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Flak%2C+B">B. Flak</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kajetanowicz%2C+M">M. Kajetanowicz</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rajda%2C+P">P. Rajda</a> , et al. (14 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1807.10754v1-abstract-short" style="display: inline;"> A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian PET (J-PET) scanner as an example. We propose a system in which there is no need for powerful, local to the scanner processing facility, capable to reconstruct images on the fly. Instead we introduce a Field Programmable Gate Array (FPGA) System-on-Chip (SoC) platform connected directly to data… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.10754v1-abstract-full').style.display = 'inline'; document.getElementById('1807.10754v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.10754v1-abstract-full" style="display: none;"> A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian PET (J-PET) scanner as an example. We propose a system in which there is no need for powerful, local to the scanner processing facility, capable to reconstruct images on the fly. Instead we introduce a Field Programmable Gate Array (FPGA) System-on-Chip (SoC) platform connected directly to data streams coming from the scanner, which can perform event building, filtering, coincidence search and Region-Of-Response (ROR) reconstruction by the programmable logic and visualization by the integrated processors. The platform significantly reduces data volume converting raw data to a list-mode representation, while generating visualization on the fly. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.10754v1-abstract-full').style.display = 'none'; document.getElementById('1807.10754v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">IEEE Transactions on Medical Imaging, 17 May 2018</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.00996">arXiv:1803.00996</a> <span> [<a href="https://arxiv.org/pdf/1803.00996">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Towards 2+1 photon tomography: Energy-based selection of two 511 keV photons and a prompt photon with the J-PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mase%C5%82ek%2C+R">R. Mase艂ek</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R">R. Shopa</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1803.00996v1-abstract-short" style="display: inline;"> The possibility to separate signals caused by 511 keV photons created in annihilation of electron-positron pairs and the so-called prompt photons from nuclei de- excitation is investigated. It could potentially be used to improve the quality of reconstructed images in the J-PET scanner in 2+1 photon tomography. Firstly, a research is conducted for several radioisotopes that decay via \b{eta}+ deca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.00996v1-abstract-full').style.display = 'inline'; document.getElementById('1803.00996v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.00996v1-abstract-full" style="display: none;"> The possibility to separate signals caused by 511 keV photons created in annihilation of electron-positron pairs and the so-called prompt photons from nuclei de- excitation is investigated. It could potentially be used to improve the quality of reconstructed images in the J-PET scanner in 2+1 photon tomography. Firstly, a research is conducted for several radioisotopes that decay via \b{eta}+ decay followed by de-excitation of an excited nucleus. Efficiency, purity and false positive rate are calculated for each isotope as a function of energy deposited threshold, with a hypothesis that signals caused by 511 keV photons deposit smaller values of energy than 1 z 13the selected threshold, while prompt photons deposit larger energy than the threshold. Analysis of the results accompanied with physical properties of radioisotopes suggests using 44 Sc, which is the most promising candidate for medical applications. With the use of GATE and J-POS simulation software, in-phantom scattering was introduced and the best energy deposited threshold value was estimated to be approximately 375 keV. It corresponds to almost 100% efficiency for 511 keV signals, 75% purity for 511 keV photons, and approximately 70% efficiency and purity for prompt photons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.00996v1-abstract-full').style.display = 'none'; document.getElementById('1803.00996v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 11 figures, 2 tables, proceedings from "Young Scientists" conferences in Warsaw, Poland, 2017</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1711.04512">arXiv:1711.04512</a> <span> [<a href="https://arxiv.org/pdf/1711.04512">pdf</a>, <a href="https://arxiv.org/format/1711.04512">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.48.1737">10.5506/APhysPolB.48.1737 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Human Tissues Investigation Using PALS Technique </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Zgardzi%C5%84ska%2C+B">B. Zgardzi艅ska</a>, <a href="/search/physics?searchtype=author&query=Cho%C5%82ubek%2C+G">G. Cho艂ubek</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Wiktor%2C+K">K. Wiktor</a>, <a href="/search/physics?searchtype=author&query=Wysogld%2C+K">K. Wysogld</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jod%C5%82owska-J%C4%99drych%2C+B">B. Jod艂owska-J臋drych</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a> , et al. (12 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1711.04512v1-abstract-short" style="display: inline;"> Samples of uterine leiomyomatis and normal tissues taken from patients after surgery were investigated using the Positron Annihilation Lifetime Spectroscopy (PALS). Significant differences in all PALS parameters between normal and diseased tissues were observed. For all studied patients, it was found that the values of the free annihilation and ortho-positronium lifetime are larger for the tumorou… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.04512v1-abstract-full').style.display = 'inline'; document.getElementById('1711.04512v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1711.04512v1-abstract-full" style="display: none;"> Samples of uterine leiomyomatis and normal tissues taken from patients after surgery were investigated using the Positron Annihilation Lifetime Spectroscopy (PALS). Significant differences in all PALS parameters between normal and diseased tissues were observed. For all studied patients, it was found that the values of the free annihilation and ortho-positronium lifetime are larger for the tumorous tissues than for the healthy ones. For most of the patients, the intensity of the free annihilation and ortho-positronium annihilation was smaller for the tumorous than for the healthy tissues. For the first time, in this kind of studies, the $3纬$ fraction of positron annihilation was determined to describe changes in the tissue porosity during morphologic alteration. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.04512v1-abstract-full').style.display = 'none'; document.getElementById('1711.04512v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Presented at the 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Krak贸w, Poland, June 4-9, 2017</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Physica Polonica B 48 2017 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1711.00365">arXiv:1711.00365</a> <span> [<a href="https://arxiv.org/pdf/1711.00365">pdf</a>, <a href="https://arxiv.org/format/1711.00365">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.48.1611">10.5506/APhysPolB.48.1611 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Introduction of total variation regularization into filtered backprojection algorithm </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R">R. Shopa</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska-Kami%C5%84ska%2C+D">D. Kisielewska-Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1711.00365v1-abstract-short" style="display: inline;"> In this paper we extend the state-of-the-art filtered backprojection (FBP) method with application of the concept of Total Variation regularization. We compare the performance of the new algorithm with the most common form of regularizing in the FBP image reconstruction via apodizing functions. The methods are validated in terms of cross-correlation coefficient between reconstructed and real image… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.00365v1-abstract-full').style.display = 'inline'; document.getElementById('1711.00365v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1711.00365v1-abstract-full" style="display: none;"> In this paper we extend the state-of-the-art filtered backprojection (FBP) method with application of the concept of Total Variation regularization. We compare the performance of the new algorithm with the most common form of regularizing in the FBP image reconstruction via apodizing functions. The methods are validated in terms of cross-correlation coefficient between reconstructed and real image of radioactive tracer distribution using standard Derenzo-type phantom. We demonstrate that the proposed approach results in higher cross-correlation values with respect to the standard FBP method. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.00365v1-abstract-full').style.display = 'none'; document.getElementById('1711.00365v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Presented at the 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Krak贸w, Poland, June 4-9, 2017. To be published in Acta Phys. Pol. B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Physica Polonica B Vol. 48, pp. 1611, 2017 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.11369">arXiv:1710.11369</a> <span> [<a href="https://arxiv.org/pdf/1710.11369">pdf</a>, <a href="https://arxiv.org/format/1710.11369">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.48.1567">10.5506/APhysPolB.48.1567 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> J-PET: a new technology for the whole-body PET imaging </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska-Kami%C5%84ska%2C+D">D. Kisielewska-Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.11369v1-abstract-short" style="display: inline;"> The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET built from plastic scintillators. J-PET prototype consists of 192 detection modules arranged axially in three layers forming a cylindrical diagnostic chamber with the inner diameter of 85 cm and the axial field-of-view of 50 cm. An axial arrangement of long strips of plastic scintillators, their small light attenuation, superior… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.11369v1-abstract-full').style.display = 'inline'; document.getElementById('1710.11369v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.11369v1-abstract-full" style="display: none;"> The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET built from plastic scintillators. J-PET prototype consists of 192 detection modules arranged axially in three layers forming a cylindrical diagnostic chamber with the inner diameter of 85 cm and the axial field-of-view of 50 cm. An axial arrangement of long strips of plastic scintillators, their small light attenuation, superior timing properties, and relative ease of the increase of the axial field-of-view opens promising perspectives for the cost effective construction of the whole-body PET scanner, as well as construction of MR and CT compatible PET inserts. Present status of the development of the J-PET tomograph will be presented and discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.11369v1-abstract-full').style.display = 'none'; document.getElementById('1710.11369v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Presented at the 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Krak贸w, Poland, June 4-9, 2017. To be published in Acta Phys. Pol. B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Physica Polonica B, Vol. 48, pp. 1567, 2017 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.11067">arXiv:1710.11067</a> <span> [<a href="https://arxiv.org/pdf/1710.11067">pdf</a>, <a href="https://arxiv.org/format/1710.11067">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.48.1961">10.5506/APhysPolB.48.1961 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Commissioning of the J-PET detector for studies of decays of positronium atoms </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R+Y">R. Y. Shopa</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.11067v2-abstract-short" style="display: inline;"> The Jagiellonian Positron Emission Tomograph (J-PET) is a detector for medical imaging of the whole human body as well as for physics studies involving detection of electron-positron annihilation into photons. J-PET has high angular and time resolution and allows for measurement of spin of the positronium and the momenta and polarization vectors of annihilation quanta. In this article, we present… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.11067v2-abstract-full').style.display = 'inline'; document.getElementById('1710.11067v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.11067v2-abstract-full" style="display: none;"> The Jagiellonian Positron Emission Tomograph (J-PET) is a detector for medical imaging of the whole human body as well as for physics studies involving detection of electron-positron annihilation into photons. J-PET has high angular and time resolution and allows for measurement of spin of the positronium and the momenta and polarization vectors of annihilation quanta. In this article, we present the potential of the J-PET system for background rejection in the decays of positronium atoms. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.11067v2-abstract-full').style.display = 'none'; document.getElementById('1710.11067v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Presented at the 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Krak贸w, Poland, June 4-9, 2017. To be published in Acta Phys. Pol. B</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.11058">arXiv:1710.11058</a> <span> [<a href="https://arxiv.org/pdf/1710.11058">pdf</a>, <a href="https://arxiv.org/format/1710.11058">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.48.1757">10.5506/APhysPolB.48.1757 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Three-dimensional image reconstruction in J-PET using Filtered Back Projection method </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shopa%2C+R+Y">R. Y. Shopa</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska-Kami%C5%84ska%2C+D">D. Kisielewska-Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.11058v1-abstract-short" style="display: inline;"> We present a method and preliminary results of the image reconstruction in the Jagiellonian PET tomograph. Using GATE (Geant4 Application for Tomographic Emission), interactions of the 511 keV photons with a cylindrical detector were generated. Pairs of such photons, flying back-to-back, originate from e+e- annihilations inside a 1-mm spherical source. Spatial and temporal coordinates of hits were… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.11058v1-abstract-full').style.display = 'inline'; document.getElementById('1710.11058v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.11058v1-abstract-full" style="display: none;"> We present a method and preliminary results of the image reconstruction in the Jagiellonian PET tomograph. Using GATE (Geant4 Application for Tomographic Emission), interactions of the 511 keV photons with a cylindrical detector were generated. Pairs of such photons, flying back-to-back, originate from e+e- annihilations inside a 1-mm spherical source. Spatial and temporal coordinates of hits were smeared using experimental resolutions of the detector. We incorporated the algorithm of the 3D Filtered Back Projection, implemented in the STIR and TomoPy software packages, which differ in approximation methods. Consistent results for the Point Spread Functions of ~5/7,mm and ~9/20, mm were obtained, using STIR, for transverse and longitudinal directions, respectively, with no time of flight information included. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.11058v1-abstract-full').style.display = 'none'; document.getElementById('1710.11058v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Presented at the 2nd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Krak贸w, Poland, June 4-9, 2017. To be published in Acta Phys. Pol. B</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Physica Polonica B, Vol. 48, pp. 1757, 2017 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.05611">arXiv:1710.05611</a> <span> [<a href="https://arxiv.org/pdf/1710.05611">pdf</a>, <a href="https://arxiv.org/format/1710.05611">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.132.1637">10.12693/APhysPolA.132.1637 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Analysis procedure of the positronium lifetime spectra for the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Zgardzinska%2C+B">B. Zgardzinska</a>, <a href="/search/physics?searchtype=author&query=Bialas%2C+P">P. Bialas</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+C+C+E">C. Curceanu E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska-Kaminska%2C+D">D. Kisielewska-Kaminska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemiez%2C+W">W. Krzemiez</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Niedzwiecka%2C+M">M. Pawlik-Niedzwiecka</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a>, <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.05611v1-abstract-short" style="display: inline;"> Positron Annihilation Lifetime Spectroscopy (PALS) has shown to be a powerful tool to study the nanostructures of porous materials. Positron Emissions Tomography (PET) are devices allowing imaging of metabolic processes e.g. in human bodies. A newly developed device, the J-PET (Jagiellonian PET), will allow PALS in addition to imaging, thus combining both analyses providing new methods for physics… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05611v1-abstract-full').style.display = 'inline'; document.getElementById('1710.05611v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.05611v1-abstract-full" style="display: none;"> Positron Annihilation Lifetime Spectroscopy (PALS) has shown to be a powerful tool to study the nanostructures of porous materials. Positron Emissions Tomography (PET) are devices allowing imaging of metabolic processes e.g. in human bodies. A newly developed device, the J-PET (Jagiellonian PET), will allow PALS in addition to imaging, thus combining both analyses providing new methods for physics and medicine. In this contribution we present a computer program that is compatible with the J-PET software. We compare its performance with the standard program LT 9.0 by using PALS data from hexane measurements at different temperatures. Our program is based on an iterative procedure, and our fits prove that it performs as good as LT 9.0. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05611v1-abstract-full').style.display = 'none'; document.getElementById('1710.05611v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 figures, 8 pages</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.05598">arXiv:1710.05598</a> <span> [<a href="https://arxiv.org/pdf/1710.05598">pdf</a>, <a href="https://arxiv.org/format/1710.05598">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.132.1641">10.12693/APhysPolA.132.1641 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Time calibration of the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Skurzok%2C+M">M. Skurzok</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Alfs%2C+D">D. Alfs</a>, <a href="/search/physics?searchtype=author&query=Bialas%2C+P">P. Bialas</a>, <a href="/search/physics?searchtype=author&query=Shivani"> Shivani</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Glowacz%2C+B">B. Glowacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska-Kaminska%2C+D">D. Kisielewska-Kaminska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Niedzwiecka%2C+M">M. Pawlik-Niedzwiecka</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a>, <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a> , et al. (10 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.05598v1-abstract-short" style="display: inline;"> The Jagiellonian Positron Emission Tomograph (J-PET) project carried out in the Institute of Physics of the Jagiellonian University is focused on construction and tests of the first prototype of PET scanner for medical diagnostic which allows for the simultaneous 3D imaging of the whole human body using organic scintillators. The J-PET prototype consists of 192 scintillator strips forming three cy… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05598v1-abstract-full').style.display = 'inline'; document.getElementById('1710.05598v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.05598v1-abstract-full" style="display: none;"> The Jagiellonian Positron Emission Tomograph (J-PET) project carried out in the Institute of Physics of the Jagiellonian University is focused on construction and tests of the first prototype of PET scanner for medical diagnostic which allows for the simultaneous 3D imaging of the whole human body using organic scintillators. The J-PET prototype consists of 192 scintillator strips forming three cylindrical layers which are optimized for the detection of photons from the electron-positron annihilation with high time- and high angular-resolutions. In this article we present time calibration and synchronization of the whole J-PET detection system by irradiating each single detection module with a 22Na source and a small detector providing common reference time for synchronization of all the modules. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05598v1-abstract-full').style.display = 'none'; document.getElementById('1710.05598v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted to publish in Acta Phys. Pol. A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1707.03565">arXiv:1707.03565</a> <span> [<a href="https://arxiv.org/pdf/1707.03565">pdf</a>, <a href="https://arxiv.org/format/1707.03565">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/12/08/P08001">10.1088/1748-0221/12/08/P08001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multichannel FPGA based MVT system for high precision time (20~ps~RMS) and charge measurement </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Strzempek%2C+P">P. Strzempek</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kajetanowicz%2C+M">M. Kajetanowicz</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohhamed%2C+M">M. Mohhamed</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1707.03565v1-abstract-short" style="display: inline;"> In this article it is presented an FPGA based $M$ulti-$V$oltage $T$hreshold (MVT) system which allows of sampling fast signals ($1-2$ ns rising and falling edge) in both voltage and time domain. It is possible to achieve a precision of time measurement of $20$ ps RMS and reconstruct charge of signals, using a simple approach, with deviation from real value smaller than 10$\%$. Utilization of the d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.03565v1-abstract-full').style.display = 'inline'; document.getElementById('1707.03565v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.03565v1-abstract-full" style="display: none;"> In this article it is presented an FPGA based $M$ulti-$V$oltage $T$hreshold (MVT) system which allows of sampling fast signals ($1-2$ ns rising and falling edge) in both voltage and time domain. It is possible to achieve a precision of time measurement of $20$ ps RMS and reconstruct charge of signals, using a simple approach, with deviation from real value smaller than 10$\%$. Utilization of the differential inputs of an FPGA chip as comparators together with an implementation of a TDC inside an FPGA allowed us to achieve a compact multi-channel system characterized by low power consumption and low production costs. This paper describes realization and functioning of the system comprising 192-channel TDC board and a four mezzanine cards which split incoming signals and discriminate them. The boards have been used to validate a newly developed Time-of-Flight Positron Emission Tomography system based on plastic scintillators. The achieved full system time resolution of $蟽$(TOF) $\approx 68$ ps is by factor of two better with respect to the current TOF-PET systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.03565v1-abstract-full').style.display = 'none'; document.getElementById('1707.03565v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in JINST, 10 pages, 8 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1706.00924">arXiv:1706.00924</a> <span> [<a href="https://arxiv.org/pdf/1706.00924">pdf</a>, <a href="https://arxiv.org/format/1706.00924">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6560/aa7005">10.1088/1361-6560/aa7005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Calculation of time resolution of the J-PET tomograph using the Kernel Density Estimation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Alfs%2C+D">D. Alfs</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1706.00924v2-abstract-short" style="display: inline;"> In this paper we estimate the time resolution of the J-PET scanner built from plastic scintillators. We incorporate the method of signal processing using the Tikhonov regularization framework and the Kernel Density Estimation method. We obtain simple, closed-form analytical formulas for time resolutions. The proposed method is validated using signals registered by means of the single detection uni… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.00924v2-abstract-full').style.display = 'inline'; document.getElementById('1706.00924v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1706.00924v2-abstract-full" style="display: none;"> In this paper we estimate the time resolution of the J-PET scanner built from plastic scintillators. We incorporate the method of signal processing using the Tikhonov regularization framework and the Kernel Density Estimation method. We obtain simple, closed-form analytical formulas for time resolutions. The proposed method is validated using signals registered by means of the single detection unit of the J-PET tomograph built out from 30 cm long plastic scintillator strip. It is shown that the experimental and theoretical results, obtained for the J-PET scanner equipped with vacuum tube photomultipliers, are consistent. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.00924v2-abstract-full').style.display = 'none'; document.getElementById('1706.00924v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 June, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">25 pages, 11 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Med. Biol. 62 (2017) 5076-5097 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.07528">arXiv:1602.07528</a> <span> [<a href="https://arxiv.org/pdf/1602.07528">pdf</a>, <a href="https://arxiv.org/format/1602.07528">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2016.02.069">10.1016/j.nima.2016.02.069 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Trilateration-based reconstruction of ortho-positronium decays into three photons with the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Alfs%2C+D">D. Alfs</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.07528v1-abstract-short" style="display: inline;"> This work reports on a new reconstruction algorithm allowing to reconstruct the decays of ortho-positronium atoms into three photons using the places and times of photons recorded in the detector. The method is based on trilateration and allows for a simultaneous reconstruction of both location and time of the decay. Results of resolution tests of the new reconstruction in the J-PET detector based… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.07528v1-abstract-full').style.display = 'inline'; document.getElementById('1602.07528v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.07528v1-abstract-full" style="display: none;"> This work reports on a new reconstruction algorithm allowing to reconstruct the decays of ortho-positronium atoms into three photons using the places and times of photons recorded in the detector. The method is based on trilateration and allows for a simultaneous reconstruction of both location and time of the decay. Results of resolution tests of the new reconstruction in the J-PET detector based on Monte Carlo simulations are presented, which yield a spatial resolution at the level of 2 cm (FWHM) for X and Y and at the level of 1 cm (FWHM) for Z available with the present resolution of J-PET after application of a kinematic fit. Prospects of employment of this method for studying angular correlations of photons in decays of polarized ortho-positronia for the needs of tests of CP and CPT discrete symmetries are also discussed. The new reconstruction method allows for discrimination of background from random three-photon coincidences as well as for application of a novel method for determination of the linear polarization of ortho-positronium atoms, which is also introduced in this work. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.07528v1-abstract-full').style.display = 'none'; document.getElementById('1602.07528v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 5 figures. Accepted for publication in Nuclear Instrumentation and Methods in Physics Research A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.05376">arXiv:1602.05376</a> <span> [<a href="https://arxiv.org/pdf/1602.05376">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.47.453">10.5506/APhysPolB.47.453 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of the 3纬fraction from positron annihilation in mesoporous materials for symmetry violation experiment with J-PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Wiertel%2C+M">M. Wiertel</a>, <a href="/search/physics?searchtype=author&query=Zaleski%2C+R">R. Zaleski</a>, <a href="/search/physics?searchtype=author&query=Alfs%2C+D">D. Alfs</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.05376v1-abstract-short" style="display: inline;"> Various mesoporous materials were investigated to choose the best material for experiments requiring high yield of long-lived positronium. We found that the fraction of 3纬annihilation determined using 纬-ray energy spectra and positron annihilation lifetime spectra (PAL) changed from 20% to 25%. The 3gamma fraction and o-Ps formation probability in the polymer XAD-4 is found to be the largest. Elem… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.05376v1-abstract-full').style.display = 'inline'; document.getElementById('1602.05376v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.05376v1-abstract-full" style="display: none;"> Various mesoporous materials were investigated to choose the best material for experiments requiring high yield of long-lived positronium. We found that the fraction of 3纬annihilation determined using 纬-ray energy spectra and positron annihilation lifetime spectra (PAL) changed from 20% to 25%. The 3gamma fraction and o-Ps formation probability in the polymer XAD-4 is found to be the largest. Elemental analysis performed using scanning electron microscop (SEM) equipped with energy-dispersive X-ray spectroscop EDS show high purity of the investigated materials. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.05376v1-abstract-full').style.display = 'none'; document.getElementById('1602.05376v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.05251">arXiv:1602.05251</a> <span> [<a href="https://arxiv.org/pdf/1602.05251">pdf</a>, <a href="https://arxiv.org/format/1602.05251">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolB.47.491">10.5506/APhysPolB.47.491 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sampling FEE and Trigger-less DAQ for the J-PET Scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Alfs%2C+D">D. Alfs</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.05251v1-abstract-short" style="display: inline;"> In this paper, we present a complete Data Acquisition System (DAQ) together with the readout mechanisms for the J-PET tomography scanner. In general detector readout chain is constructed out of Front-End Electronics (FEE), measurement devices like Time-to-Digital or Analog-to-Digital Converters (TDCs or ADCs), data collectors and storage. We have developed a system capable for maintaining continuo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.05251v1-abstract-full').style.display = 'inline'; document.getElementById('1602.05251v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.05251v1-abstract-full" style="display: none;"> In this paper, we present a complete Data Acquisition System (DAQ) together with the readout mechanisms for the J-PET tomography scanner. In general detector readout chain is constructed out of Front-End Electronics (FEE), measurement devices like Time-to-Digital or Analog-to-Digital Converters (TDCs or ADCs), data collectors and storage. We have developed a system capable for maintaining continuous readout of digitized data without preliminary selection. Such operation mode results in up to 8 Gbps data stream, therefore it is required to introduce a dedicated module for online event building and feature extraction. The Central Controller Module, equipped with Xilinx Zynq SoC and 16 optical transceivers serves as such true real time computing facility. Our solution for the continuous data recording (trigger-less) is a novel approach in such detector systems and assures that most of the information is preserved on the storage for further, high-level processing. Signal discrimination applies an unique method of using LVDS buffers located in the FPGA fabric. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.05251v1-abstract-full').style.display = 'none'; document.getElementById('1602.05251v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 1 figure</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.02058">arXiv:1602.02058</a> <span> [<a href="https://arxiv.org/pdf/1602.02058">pdf</a>, <a href="https://arxiv.org/format/1602.02058">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0031-9155/61/5/2025">10.1088/0031-9155/61/5/2025 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Time resolution of the plastic scintillator strips with matrix photomultiplier readout for J-PET tomograph </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Alfs%2C+D">D. Alfs</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Giergiel%2C+K">K. Giergiel</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.02058v2-abstract-short" style="display: inline;"> Recent tests of a single module of the Jagiellonian Positron Emission Tomography system (J-PET) consisting of 30 cm long plastic scintillator strips have proven its applicability for the detection of annihilation quanta (0.511 MeV) with a coincidence resolving time (CRT) of 0.266 ns. The achieved resolution is almost by a factor of two better with respect to the current TOF-PET detectors and it ca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.02058v2-abstract-full').style.display = 'inline'; document.getElementById('1602.02058v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.02058v2-abstract-full" style="display: none;"> Recent tests of a single module of the Jagiellonian Positron Emission Tomography system (J-PET) consisting of 30 cm long plastic scintillator strips have proven its applicability for the detection of annihilation quanta (0.511 MeV) with a coincidence resolving time (CRT) of 0.266 ns. The achieved resolution is almost by a factor of two better with respect to the current TOF-PET detectors and it can still be improved since, as it is shown in this article, the intrinsic limit of time resolution for the determination of time of the interaction of 0.511 MeV gamma quanta in plastic scintillators is much lower. As the major point of the article, a method allowing to record timestamps of several photons, at two ends of the scintillator strip, by means of matrix of silicon photomultipliers (SiPM) is introduced. As a result of simulations, conducted with the number of SiPM varying from 4 to 42, it is shown that the improvement of timing resolution saturates with the growing number of photomultipliers, and that the 2 x 5 configuration at two ends allowing to read twenty timestamps, constitutes an optimal solution. The conducted simulations accounted for the emission time distribution, photon transport and absorption inside the scintillator, as well as quantum efficiency and transit time spread of photosensors, and were checked based on the experimental results. Application of the 2 x 5 matrix of SiPM allows for achieving the coincidence resolving time in positron emission tomography of $\approx$ 0.170 ns for 15 cm axial field-of-view (AFOV) and $\approx$ 0.365 ns for 100 cm AFOV. The results open perspectives for construction of a cost-effective TOF-PET scanner with significantly better TOF resolution and larger AFOV with respect to the current TOF-PET modalities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.02058v2-abstract-full').style.display = 'none'; document.getElementById('1602.02058v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">To be published in Phys. Med. Biol. (26 pages, 17 figures)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Med. Biol. 61 (2016) 2025 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.01114">arXiv:1509.01114</a> <span> [<a href="https://arxiv.org/pdf/1509.01114">pdf</a>, <a href="https://arxiv.org/format/1509.01114">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/nuka-2015-0131">10.1515/nuka-2015-0131 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searches for discrete symmetries violation in ortho-positronium decay using the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wieczorek%2C+A">A. Wieczorek</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.01114v1-abstract-short" style="display: inline;"> In this paper we present prospects for using the J-PET detector to search for discrete symmetries violations in a purely leptonic system of the positronium atom. We discuss tests of CP and CPT symmetries by means of ortho-positronium decays into three photons. No zero expectation values for chosen correlations between ortho-positronium spin and momentum vectors of photons would imply the existence… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.01114v1-abstract-full').style.display = 'inline'; document.getElementById('1509.01114v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.01114v1-abstract-full" style="display: none;"> In this paper we present prospects for using the J-PET detector to search for discrete symmetries violations in a purely leptonic system of the positronium atom. We discuss tests of CP and CPT symmetries by means of ortho-positronium decays into three photons. No zero expectation values for chosen correlations between ortho-positronium spin and momentum vectors of photons would imply the existence of physics phenomena beyond the Standard Model. Previous measurements resulted in violation amplitude parameters for CP and CPT symmetries consistent with zero, with an uncertainty of about 10-3. The J-PET detector allows to determine those values with better precision thanks to a unique time and angular esolution combined with a high geometrical acceptance. Achieving the aforementioned is possible due to application of polymer scintillators instead of crystals as detectors of annihilation quanta. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.01114v1-abstract-full').style.display = 'none'; document.getElementById('1509.01114v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">in Nukleonika 2015</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nukleonika 60(4) (2015) 729-732 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.00411">arXiv:1509.00411</a> <span> [<a href="https://arxiv.org/pdf/1509.00411">pdf</a>, <a href="https://arxiv.org/format/1509.00411">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Other Quantitative Biology">q-bio.OT</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/nuka-2015-0135">10.1515/nuka-2015-0135 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Studies of unicellular micro-organisms Saccharomyces cerevisiae by means of Positron Annihilation Lifetime Spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Zgardzi%C5%84ska%2C+B">B. Zgardzi艅ska</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rajfur%2C+Z">Z. Rajfur</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (4 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.00411v1-abstract-short" style="display: inline;"> Results of Positron Annihilation Lifetime Spectroscopy (PALS) and microscopic studies on simple microorganisms: brewing yeasts are presented. Lifetime of ortho - positronium (o-Ps) were found to change from 2.4 to 2.9 ns (longer lived component) for lyophilised and aqueous yeasts, respectively. Also hygroscopicity of yeasts in time was examined, allowing to check how water - the main component of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.00411v1-abstract-full').style.display = 'inline'; document.getElementById('1509.00411v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.00411v1-abstract-full" style="display: none;"> Results of Positron Annihilation Lifetime Spectroscopy (PALS) and microscopic studies on simple microorganisms: brewing yeasts are presented. Lifetime of ortho - positronium (o-Ps) were found to change from 2.4 to 2.9 ns (longer lived component) for lyophilised and aqueous yeasts, respectively. Also hygroscopicity of yeasts in time was examined, allowing to check how water - the main component of the cell - affects PALS parameters, thus lifetime of o-Ps were found to change from 1.2 to 1.4 ns (shorter lived component) for the dried yeasts. The time sufficient to hydrate the cells was found below 10 hours. In the presence of liquid water an indication of reorganization of yeast in the molecular scale was observed. Microscopic images of the lyophilised, dried and wet yeasts with best possible resolution were obtained using Inverted Microscopy (IM) and Environmental Scanning Electron Microscopy (ESEM) methods. As a result visible changes to the surface of the cell membrane were observed in ESEM images. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.00411v1-abstract-full').style.display = 'none'; document.getElementById('1509.00411v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Nukleonika (2015)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nukleonika 60(4) (2015) 749-753 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.07463">arXiv:1508.07463</a> <span> [<a href="https://arxiv.org/pdf/1508.07463">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/nuka-2015-0138">10.1515/nuka-2015-0138 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Reconstruction of hit-time and hit-position of annihilation quanta in the J-PET detector using the Mahalanobis distance </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wieczorek%2C+A">A. Wieczorek</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1508.07463v1-abstract-short" style="display: inline;"> The J-PET detector being developed at Jagiellonian University, is a Positron Emission Tomograph composed of the long strips of polymer scintillators. At the same time it is a detector system which will be used for studies of the decays of positronium atoms. The shape of photomultiplier signals depends on the hit-time and hit-position of the gamma quantum. In order to take advantage of this fact a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.07463v1-abstract-full').style.display = 'inline'; document.getElementById('1508.07463v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.07463v1-abstract-full" style="display: none;"> The J-PET detector being developed at Jagiellonian University, is a Positron Emission Tomograph composed of the long strips of polymer scintillators. At the same time it is a detector system which will be used for studies of the decays of positronium atoms. The shape of photomultiplier signals depends on the hit-time and hit-position of the gamma quantum. In order to take advantage of this fact a dedicated sampling front-end electronics which enables to sample signals in voltage domain with the time precision of about 20 ps and novel reconstruction method based on the comparison of examined signal with the model signals stored in the library has been developed. As a measure of the similarity we use the Mahalanobis distance. The achievable position and time-resolution depends on number and values of the threshold levels at which the signal is sampled. A reconstruction method, as well as preliminary results are presented and discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.07463v1-abstract-full').style.display = 'none'; document.getElementById('1508.07463v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nukleonika 60(4) (2015) 765-769 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.06820">arXiv:1508.06820</a> <span> [<a href="https://arxiv.org/pdf/1508.06820">pdf</a>, <a href="https://arxiv.org/format/1508.06820">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/nuka-2015-0140">10.1515/nuka-2015-0140 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> PALS investigations of free volumes thermal expansion of J-PET plastic scintillator synthesized in polystyrene matrix </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wieczorek%2C+A">A. Wieczorek</a>, <a href="/search/physics?searchtype=author&query=Zgardzi%C5%84ska%2C+B">B. Zgardzi艅ska</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1508.06820v1-abstract-short" style="display: inline;"> The polystyrene dopped with 2,5-diphenyloxazole as a primary fluor and 2-(4-styrylphenyl)benzoxazole as a wavelength shifter, prepared as a plastic scintillator was investigated using positronium probe in wide range of temperatures from 123 to 423 K. Three structural transitions at 260 K, 283 K and 370 K were found in the material. In the o-Ps intensity dependence on temperature, the significant h… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.06820v1-abstract-full').style.display = 'inline'; document.getElementById('1508.06820v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.06820v1-abstract-full" style="display: none;"> The polystyrene dopped with 2,5-diphenyloxazole as a primary fluor and 2-(4-styrylphenyl)benzoxazole as a wavelength shifter, prepared as a plastic scintillator was investigated using positronium probe in wide range of temperatures from 123 to 423 K. Three structural transitions at 260 K, 283 K and 370 K were found in the material. In the o-Ps intensity dependence on temperature, the significant hysteresis is observed. Heated to 370 K, the material exhibits the o-Ps intensity variations in time. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.06820v1-abstract-full').style.display = 'none'; document.getElementById('1508.06820v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">in Nukleonika 2015</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nukleonika 60(4) (2015) 777-781 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.02751">arXiv:1508.02751</a> <span> [<a href="https://arxiv.org/pdf/1508.02751">pdf</a>, <a href="https://arxiv.org/ps/1508.02751">ps</a>, <a href="https://arxiv.org/format/1508.02751">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/nuka-2015-0134">10.1515/nuka-2015-0134 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Processing optimization with parallel computing for the J-PET tomography scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Ba%C5%82a%2C+M">M. Ba艂a</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Stola%2C+K">K. Stola</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Trybek%2C+D">D. Trybek</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1508.02751v1-abstract-short" style="display: inline;"> The Jagiellonian-PET (J-PET) collaboration is developing a prototype TOF-PET detector based on long polymer scintillators. This novel approach exploits the excellent time properties of the plastic scintillators, which permit very precise time measurements. The very fast, FPGA-based front-end electronics and the data acquisition system, as well as, low- and high-level reconstruction algorithms were… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.02751v1-abstract-full').style.display = 'inline'; document.getElementById('1508.02751v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.02751v1-abstract-full" style="display: none;"> The Jagiellonian-PET (J-PET) collaboration is developing a prototype TOF-PET detector based on long polymer scintillators. This novel approach exploits the excellent time properties of the plastic scintillators, which permit very precise time measurements. The very fast, FPGA-based front-end electronics and the data acquisition system, as well as, low- and high-level reconstruction algorithms were specially developed to be used with the J-PET scanner. The TOF-PET data processing and reconstruction are time and resource demanding operations, especially in case of a large acceptance detector, which works in triggerless data acquisition mode. In this article, we discuss the parallel computing methods applied to optimize the data processing for the J-PET detector. We begin with general concepts of parallel computing and then we discuss several applications of those techniques in the J-PET data processing. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.02751v1-abstract-full').style.display = 'none'; document.getElementById('1508.02751v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> NUKLEONIKA 2015 60 (4) 745 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.03799">arXiv:1507.03799</a> <span> [<a href="https://arxiv.org/pdf/1507.03799">pdf</a>, <a href="https://arxiv.org/format/1507.03799">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/nuka-2016-0012">10.1515/nuka-2016-0012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Application of the Compress Sensing Theory for Improvement of the TOF Resolution in a Novel J-PET Instrument </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Wislicki%2C+W">W. Wislicki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bialas%2C+P">P. Bialas</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Slomski%2C+A">A. Slomski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wieczorek%2C+A">A. Wieczorek</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1507.03799v2-abstract-short" style="display: inline;"> Nowadays, in Positron Emission Tomography (PET) systems, a Time of Flight information is used to improve the image reconstruction process. In Time of Flight PET (TOF-PET), fast detectors are able to measure the difference in the arrival time of the two gamma rays, with the precision enabling to shorten significantly a range along the line-of-response (LOR) where the annihilation occurred. In the n… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.03799v2-abstract-full').style.display = 'inline'; document.getElementById('1507.03799v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.03799v2-abstract-full" style="display: none;"> Nowadays, in Positron Emission Tomography (PET) systems, a Time of Flight information is used to improve the image reconstruction process. In Time of Flight PET (TOF-PET), fast detectors are able to measure the difference in the arrival time of the two gamma rays, with the precision enabling to shorten significantly a range along the line-of-response (LOR) where the annihilation occurred. In the new concept, called J-PET scanner, gamma rays are detected in plastic scintillators. In a single strip of J-PET system, time values are obtained by probing signals in the amplitude domain. Owing to Compress Sensing theory, information about the shape and amplitude of the signals is recovered. In this paper we demonstrate that based on the acquired signals parameters, a better signal normalization may be provided in order to improve the TOF resolution. The procedure was tested using large sample of data registered by a dedicated detection setup enabling sampling of signals with 50 ps intervals. Experimental setup provided irradiation of a chosen position in the plastic scintillator strip with annihilation gamma quanta. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.03799v2-abstract-full').style.display = 'none'; document.getElementById('1507.03799v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nukleonika 61, (2016) 35-39 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.05188">arXiv:1503.05188</a> <span> [<a href="https://arxiv.org/pdf/1503.05188">pdf</a>, <a href="https://arxiv.org/format/1503.05188">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2015.03.032">10.1016/j.nima.2015.03.032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Compressive Sensing of Signals Generated in Plastic Scintillators in a Novel J-PET Instrument </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Wislicki%2C+W">W. Wislicki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bialas%2C+P">P. Bialas</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=lomski%2C+A+S">A. S lomski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1503.05188v3-abstract-short" style="display: inline;"> The J-PET scanner, which allows for single bed imaging of the whole human body, is currently under development at the Jagiellonian University. The dis- cussed detector offers improvement of the Time of Flight (TOF) resolution due to the use of fast plastic scintillators and dedicated electronics allowing for sam- pling in the voltage domain of signals with durations of few nanoseconds. In this pap… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.05188v3-abstract-full').style.display = 'inline'; document.getElementById('1503.05188v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.05188v3-abstract-full" style="display: none;"> The J-PET scanner, which allows for single bed imaging of the whole human body, is currently under development at the Jagiellonian University. The dis- cussed detector offers improvement of the Time of Flight (TOF) resolution due to the use of fast plastic scintillators and dedicated electronics allowing for sam- pling in the voltage domain of signals with durations of few nanoseconds. In this paper we show that recovery of the whole signal, based on only a few samples, is possible. In order to do that, we incorporate the training signals into the Tikhonov regularization framework and we perform the Principal Component Analysis decomposition, which is well known for its compaction properties. The method yields a simple closed form analytical solution that does not require iter- ative processing. Moreover, from the Bayes theory the properties of regularized solution, especially its covariance matrix, may be easily derived. This is the key to introduce and prove the formula for calculations of the signal recovery error. In this paper we show that an average recovery error is approximately inversely proportional to the number of acquired samples. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.05188v3-abstract-full').style.display = 'none'; document.getElementById('1503.05188v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 April, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.00465">arXiv:1503.00465</a> <span> [<a href="https://arxiv.org/pdf/1503.00465">pdf</a>, <a href="https://arxiv.org/ps/1503.00465">ps</a>, <a href="https://arxiv.org/format/1503.00465">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.127.1491">10.12693/APhysPolA.127.1491 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Analysis framework for the J-PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gruntowski%2C+A">A. Gruntowski</a>, <a href="/search/physics?searchtype=author&query=Stola%2C+K">K. Stola</a>, <a href="/search/physics?searchtype=author&query=Trybek%2C+D">D. Trybek</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+L">L. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1503.00465v2-abstract-short" style="display: inline;"> J-PET analysis framework is a flexible, lightweight, ROOT-based software package which provides the tools to develop reconstruction and calibration procedures for PET tomography. In this article we present the implementation of the full data-processing chain in the J-PET framework which is used for the data analysis of the J-PET tomography scanner. The Framework incorporates automated handling of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.00465v2-abstract-full').style.display = 'inline'; document.getElementById('1503.00465v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.00465v2-abstract-full" style="display: none;"> J-PET analysis framework is a flexible, lightweight, ROOT-based software package which provides the tools to develop reconstruction and calibration procedures for PET tomography. In this article we present the implementation of the full data-processing chain in the J-PET framework which is used for the data analysis of the J-PET tomography scanner. The Framework incorporates automated handling of PET setup parameters' database as well as high level tools for building data reconstruction procedures. Each of these components is briefly discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.00465v2-abstract-full').style.display = 'none'; document.getElementById('1503.00465v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 1 figure</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Pol. A 127 (2015) 1491-1494 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.07886">arXiv:1502.07886</a> <span> [<a href="https://arxiv.org/pdf/1502.07886">pdf</a>, <a href="https://arxiv.org/format/1502.07886">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.127.1495">10.12693/APhysPolA.127.1495 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Hit time and hit position reconstruction in the J-PET detector based on a library of averaged model signals </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Bu%C5%82ka%2C+J">J. Bu艂ka</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+L">L. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.07886v2-abstract-short" style="display: inline;"> In this article we present a novel method of hit time and hit position reconstruction in long scintillator detectors. We take advantage of the fact that for this kind of detectors amplitude and shape of registered signals depends strongly on the position where particle hit the detector. The reconstruction is based on determination of the degree of similarity between measured and averaged signals s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.07886v2-abstract-full').style.display = 'inline'; document.getElementById('1502.07886v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.07886v2-abstract-full" style="display: none;"> In this article we present a novel method of hit time and hit position reconstruction in long scintillator detectors. We take advantage of the fact that for this kind of detectors amplitude and shape of registered signals depends strongly on the position where particle hit the detector. The reconstruction is based on determination of the degree of similarity between measured and averaged signals stored in a library for a set of well-defined positions along the scintillator. Preliminary results of validation of the introduced method with experimental data obtained by means of the double strip prototype of the J-PET detector are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.07886v2-abstract-full').style.display = 'none'; document.getElementById('1502.07886v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Polon. A 127 (2015) 1495-1499 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.07478">arXiv:1502.07478</a> <span> [<a href="https://arxiv.org/pdf/1502.07478">pdf</a>, <a href="https://arxiv.org/format/1502.07478">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.127.1500">10.12693/APhysPolA.127.1500 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> GPU accelerated image reconstruction in a two-strip J-PET tomograph </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a> , et al. (4 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.07478v2-abstract-short" style="display: inline;"> We present a fast GPU implementation of the image reconstruction routine, for a novel two strip PET detector that relies solely on the time of flight measurements. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.07478v2-abstract-full" style="display: none;"> We present a fast GPU implementation of the image reconstruction routine, for a novel two strip PET detector that relies solely on the time of flight measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.07478v2-abstract-full').style.display = 'none'; document.getElementById('1502.07478v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Polon. A 127 (2015) 1500-1504 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.04532">arXiv:1502.04532</a> <span> [<a href="https://arxiv.org/pdf/1502.04532">pdf</a>, <a href="https://arxiv.org/format/1502.04532">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.127.1505">10.12693/APhysPolA.127.1505 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiple scattering and accidental coincidences in the J-PET detector simulated using GATE package </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Bu%C5%82ka%2C+J">J. Bu艂ka</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gruntowski%2C+A">A. Gruntowski</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.04532v2-abstract-short" style="display: inline;"> Novel Positron Emission Tomography system, based on plastic scintillators, is developed by the J-PET collaboration. In order to optimize geometrical configuration of built device, advanced computer simulations are performed. Detailed study is presented of background given by accidental coincidences and multiple scattering of gamma quanta. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.04532v2-abstract-full" style="display: none;"> Novel Positron Emission Tomography system, based on plastic scintillators, is developed by the J-PET collaboration. In order to optimize geometrical configuration of built device, advanced computer simulations are performed. Detailed study is presented of background given by accidental coincidences and multiple scattering of gamma quanta. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.04532v2-abstract-full').style.display = 'none'; document.getElementById('1502.04532v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 April, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 16 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Pol A127 (2015) 1505-1512 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.02901">arXiv:1502.02901</a> <span> [<a href="https://arxiv.org/pdf/1502.02901">pdf</a>, <a href="https://arxiv.org/format/1502.02901">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.127.1487">10.12693/APhysPolA.127.1487 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A pilot study of the novel J-PET plastic scintillator with 2-(4-styrylphenyl)benzoxazole as a wavelength shifter </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wieczorek%2C+A">A. Wieczorek</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Danel%2C+A">A. Danel</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gruntowski%2C+A">A. Gruntowski</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.02901v3-abstract-short" style="display: inline;"> For the first time a molecule of 2-(4-styrylphenyl)benzoxazole containing benzoxazole and stilbene groups is applied as a scintillator dopant acting as a wavelength shifter. In this article a light yield of the plastic scintillator, prepared from styrene doped with 2 wt% of 2,5-diphenylbenzoxazole and 0.03 wt% of 2-(4-styrylphenyl)benzoxazole, is determined to be as large as 60% $\pm$ 2% of the an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.02901v3-abstract-full').style.display = 'inline'; document.getElementById('1502.02901v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.02901v3-abstract-full" style="display: none;"> For the first time a molecule of 2-(4-styrylphenyl)benzoxazole containing benzoxazole and stilbene groups is applied as a scintillator dopant acting as a wavelength shifter. In this article a light yield of the plastic scintillator, prepared from styrene doped with 2 wt% of 2,5-diphenylbenzoxazole and 0.03 wt% of 2-(4-styrylphenyl)benzoxazole, is determined to be as large as 60% $\pm$ 2% of the anthracene light output. There is a potential to improve this value in the future by the optimization of the additives concentrations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.02901v3-abstract-full').style.display = 'none'; document.getElementById('1502.02901v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Pol A127 (2015) 1487-1490 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.6963">arXiv:1412.6963</a> <span> [<a href="https://arxiv.org/pdf/1412.6963">pdf</a>, <a href="https://arxiv.org/format/1412.6963">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.12.005">10.1016/j.nima.2014.12.005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A novel method for the line-of-response and time-of-flight reconstruction in TOF-PET detectors based on a library of synchronized model signals </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Zo%C5%84%2C+N">N. Zo艅</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">D. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Rundel%2C+O">O. Rundel</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a> , et al. (4 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1412.6963v2-abstract-short" style="display: inline;"> A novel method of hit time and hit position reconstruction in scintillator detectors is described. The method is based on comparison of detector signals with results stored in a library of synchronized model signals registered for a set of well-defined positions of scintillation points. The hit position is reconstructed as the one corresponding to the signal from the library which is most similar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.6963v2-abstract-full').style.display = 'inline'; document.getElementById('1412.6963v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.6963v2-abstract-full" style="display: none;"> A novel method of hit time and hit position reconstruction in scintillator detectors is described. The method is based on comparison of detector signals with results stored in a library of synchronized model signals registered for a set of well-defined positions of scintillation points. The hit position is reconstructed as the one corresponding to the signal from the library which is most similar to the measurement signal. The time of the interaction is determined as a relative time between the measured signal and the most similar one in the library. A degree of similarity of measured and model signals is defined as the distance between points representing the measurement- and model-signal in the multi-dimensional measurement space. Novelty of the method lies also in the proposed way of synchronization of model signals enabling direct determination of the difference between time-of-flights (TOF) of annihilation quanta from the annihilation point to the detectors. The introduced method was validated using experimental data obtained by means of the double strip prototype of the J-PET detector and $^{22}$Na sodium isotope as a source of annihilation gamma quanta.The detector was built out from plastic scintillator strips with dimensions of 5 mm x 19 mm x 300 mm, optically connected at both sides to photomultipliers,from which signals were sampled by means of the Serial Data Analyzer.Using the introduced method, the spatial and TOF resolution of about 1.3 cm ($蟽$) and 125 ps ($蟽$) were established, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.6963v2-abstract-full').style.display = 'none'; document.getElementById('1412.6963v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Inst. and Methods in Physics Research A 775 (2015), 54-62 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1407.8293">arXiv:1407.8293</a> <span> [<a href="https://arxiv.org/pdf/1407.8293">pdf</a>, <a href="https://arxiv.org/format/1407.8293">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.07.032">10.1016/j.nima.2014.07.032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Novel method for hit-position reconstruction using voltage signals in plastic scintillators and its application to Positron Emission Tomography </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Wislicki%2C+W">W. Wislicki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bialas%2C+P">P. Bialas</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L+.">L . Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+I">I. Moskal</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Niedzwiecka%2C+M">M. Pawlik-Niedzwiecka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Slomski%2C+A">A. Slomski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a> , et al. (4 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1407.8293v1-abstract-short" style="display: inline;"> Currently inorganic scintillator detectors are used in all commercial Time of Flight Positron Emission Tomograph (TOF-PET) devices. The J-PET collaboration investigates a possibility of construction of a PET scanner from plastic scintillators which would allow for single bed imaging of the whole human body. This paper describes a novel method of hit-position reconstruction based on sampled signals… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.8293v1-abstract-full').style.display = 'inline'; document.getElementById('1407.8293v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1407.8293v1-abstract-full" style="display: none;"> Currently inorganic scintillator detectors are used in all commercial Time of Flight Positron Emission Tomograph (TOF-PET) devices. The J-PET collaboration investigates a possibility of construction of a PET scanner from plastic scintillators which would allow for single bed imaging of the whole human body. This paper describes a novel method of hit-position reconstruction based on sampled signals and an example of an application of the method for a single module with a 30 cm long plastic strip, read out on both ends by Hamamatsu R4998 photomultipliers. The sampling scheme to generate a vector with samples of a PET event waveform with respect to four user-defined amplitudes is introduced. The experimental setup provides irradiation of a chosen position in the plastic scintillator strip with an annihilation gamma quanta of energy 511~keV. The statistical test for a multivariate normal (MVN) distribution of measured vectors at a given position is developed, and it is shown that signals sampled at four thresholds in a voltage domain are approximately normally distributed variables. With the presented method of a vector analysis made out of waveform samples acquired with four thresholds, we obtain a spatial resolution of about 1 cm and a timing resolution of about 80 ps <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.8293v1-abstract-full').style.display = 'none'; document.getElementById('1407.8293v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 July, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1407.7395">arXiv:1407.7395</a> <span> [<a href="https://arxiv.org/pdf/1407.7395">pdf</a>, <a href="https://arxiv.org/ps/1407.7395">ps</a>, <a href="https://arxiv.org/format/1407.7395">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.07.052">10.1016/j.nima.2014.07.052 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Test of a single module of the J-PET scanner based on plastic scintillators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+I">I. Moskal</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a>, <a href="/search/physics?searchtype=author&query=Zo%C5%84%2C+N">N. Zo艅</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1407.7395v2-abstract-short" style="display: inline;"> Time of Flight Positron Emission Tomography scanner based on plastic scintillators is being developed at the Jagiellonian University by the J-PET collaboration. The main challenge of the conducted research lies in the elaboration of a method allowing application of plastic scintillators for the detection of low energy gamma quanta. In this article we report on tests of a single detection module bu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.7395v2-abstract-full').style.display = 'inline'; document.getElementById('1407.7395v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1407.7395v2-abstract-full" style="display: none;"> Time of Flight Positron Emission Tomography scanner based on plastic scintillators is being developed at the Jagiellonian University by the J-PET collaboration. The main challenge of the conducted research lies in the elaboration of a method allowing application of plastic scintillators for the detection of low energy gamma quanta. In this article we report on tests of a single detection module built out from BC-420 plastic scintillator strip (with dimensions of 5x19x300mm^3) read out at two ends by Hamamatsu R5320 photomultipliers. The measurements were performed using collimated beam of annihilation quanta from the 68Ge isotope and applying the Serial Data Analyzer (Lecroy SDA6000A) which enabled sampling of signals with 50ps intervals. The time resolution of the prototype module was established to be better than 80ps (sigma) for a single level discrimination. The spatial resolution of the determination of the hit position along the strip was determined to be about 0.93cm (sigma) for the annihilation quanta. The fractional energy resolution for the energy E deposited by the annihilation quanta via the Compton scattering amounts to sigma(E)/E = 0.044/sqrt(E[MeV]) and corresponds to the sigma(E)/E of 7.5% at the Compton edge. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.7395v2-abstract-full').style.display = 'none'; document.getElementById('1407.7395v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 July, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 6 figures; Updated with editorial corrections related to publication in NIM A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Inst. and Methods in Physics Research A 764 (2014), pp. 317-321 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1402.6840">arXiv:1402.6840</a> <span> [<a href="https://arxiv.org/pdf/1402.6840">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2014-0002">10.1515/bams-2014-0002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determination of the map of efficiency of the J-PET detector with the GATE package </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Giergiel%2C+K">K. Giergiel</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+I">I. Moskal</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1402.6840v1-abstract-short" style="display: inline;"> A novel PET detector consisting of strips of polymer scintillators is being developed by the J-PET Collaboration. The map of efficiency and the map of geometrical acceptance of the 2-strip J-PET scanner are presented. Map of efficiency was determined using the Monte Carlo simulation software GATE based on GEANT4. Both maps were compared using method based on the chi2 test. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1402.6840v1-abstract-full" style="display: none;"> A novel PET detector consisting of strips of polymer scintillators is being developed by the J-PET Collaboration. The map of efficiency and the map of geometrical acceptance of the 2-strip J-PET scanner are presented. Map of efficiency was determined using the Monte Carlo simulation software GATE based on GEANT4. Both maps were compared using method based on the chi2 test. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.6840v1-abstract-full').style.display = 'none'; document.getElementById('1402.6840v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 February, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 9 figures, proceeding from conference Symposium on Positron Emission Tomography: http://koza.if.uj.edu.pl/pet-symposium-2013/</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(2), 85-90 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1402.4116">arXiv:1402.4116</a> <span> [<a href="https://arxiv.org/pdf/1402.4116">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2014-0003">10.1515/bams-2014-0003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Database and data structure for the novel TOF-PET detector developed for J-PET project </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1402.4116v1-abstract-short" style="display: inline;"> The complexity of the hardware and the amount of data collected during the PET imaging process require application of modern methods of efficient data organization and processing. In this article we will discuss the data structures and the flow of collected data from the novel TOF-PET medical scanner which is being developed at the Jagiellonian University. The developed data format reflects: regis… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.4116v1-abstract-full').style.display = 'inline'; document.getElementById('1402.4116v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1402.4116v1-abstract-full" style="display: none;"> The complexity of the hardware and the amount of data collected during the PET imaging process require application of modern methods of efficient data organization and processing. In this article we will discuss the data structures and the flow of collected data from the novel TOF-PET medical scanner which is being developed at the Jagiellonian University. The developed data format reflects: registration process of the gamma quanta emitted from positron-electron annihilation, Front-End Electronic (FEE) structure and required input information for the image reconstruction. In addition, the system database fulfills possible demands of the evolving J-PET project. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.4116v1-abstract-full').style.display = 'none'; document.getElementById('1402.4116v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 February, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 p, 3 figs, based on talk given at Symposium on Positron Emission Tomography, Sept. 19-22, 2013, Jagiellonian University, Krak贸w PL, submitted to Bio-Algorithms and Med-Systems</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(2), 79-83 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1401.6929">arXiv:1401.6929</a> <span> [<a href="https://arxiv.org/pdf/1401.6929">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computer Vision and Pattern Recognition">cs.CV</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Distributed, Parallel, and Cluster Computing">cs.DC</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2014-0001">10.1515/bams-2014-0001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Computing support for advanced medical data analysis and imaging </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wieczorek%2C+A">A. Wieczorek</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1401.6929v1-abstract-short" style="display: inline;"> We discuss computing issues for data analysis and image reconstruction of PET-TOF medical scanner or other medical scanning devices producing large volumes of data. Service architecture based on the grid and cloud concepts for distributed processing is proposed and critically discussed. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1401.6929v1-abstract-full" style="display: none;"> We discuss computing issues for data analysis and image reconstruction of PET-TOF medical scanner or other medical scanning devices producing large volumes of data. Service architecture based on the grid and cloud concepts for distributed processing is proposed and critically discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1401.6929v1-abstract-full').style.display = 'none'; document.getElementById('1401.6929v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 January, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 p, 3 figs, based on talk given at Symposium on Positron Emission Tomography, Sept. 19-22, 2013, Jagiellonian University, Krak贸w, Pl</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(2014)52 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.2744">arXiv:1312.2744</a> <span> [<a href="https://arxiv.org/pdf/1312.2744">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2013-0110">10.1515/bams-2013-0110 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Calibration of photomultipliers gain used in the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Giergiel%2C+K">K. Giergiel</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+I">I. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1312.2744v2-abstract-short" style="display: inline;"> Photomultipliers are commonly used in commercial PET scanner as devices which convert light produced in scintillator by gamma quanta from positron-electron annihilation into electrical signal. For proper analysis of obtained electrical signal, a photomultiplier gain curve must be known, since gain can be significantly different even between photomultipliers of the same model. In this article we de… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.2744v2-abstract-full').style.display = 'inline'; document.getElementById('1312.2744v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.2744v2-abstract-full" style="display: none;"> Photomultipliers are commonly used in commercial PET scanner as devices which convert light produced in scintillator by gamma quanta from positron-electron annihilation into electrical signal. For proper analysis of obtained electrical signal, a photomultiplier gain curve must be known, since gain can be significantly different even between photomultipliers of the same model. In this article we describe single photoelectron method used for photomultipliers calibration applied for J-PET scanner, a novel PET detector being developed at the Jagiellonian University. Description of calibration method, an example of calibration curve and gain of few R4998 Hamamatsu photomultipliers are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.2744v2-abstract-full').style.display = 'none'; document.getElementById('1312.2744v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Bio-Algorithms and Med-Systems (12 pages, 6 figures)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems Volume 10(1), 13-17 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1312.0250">arXiv:1312.0250</a> <span> [<a href="https://arxiv.org/pdf/1312.0250">pdf</a>, <a href="https://arxiv.org/format/1312.0250">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2013-0107">10.1515/bams-2013-0107 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Simulations of gamma quanta scattering in a single module of the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Szyma%C5%84ski%2C+K">K. Szyma艅ski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Giergiel%2C+K">K. Giergiel</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+I">I. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1312.0250v1-abstract-short" style="display: inline;"> This article describes simulations of scattering of annihilation gamma quanta in a strip of plastic scintillator. Such strips constitute basic detection modules in a newly proposed Positron Emission Tomography which utilizes plastic scintillators instead of inorganic crystals. An algorithm simulating chain of Compton scatterings was elaborated and series of simulations have been conducted for the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.0250v1-abstract-full').style.display = 'inline'; document.getElementById('1312.0250v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1312.0250v1-abstract-full" style="display: none;"> This article describes simulations of scattering of annihilation gamma quanta in a strip of plastic scintillator. Such strips constitute basic detection modules in a newly proposed Positron Emission Tomography which utilizes plastic scintillators instead of inorganic crystals. An algorithm simulating chain of Compton scatterings was elaborated and series of simulations have been conducted for the scintillator strip with the cross section of 5 mm x 19 mm. Obtained results indicate that secondary interactions occur only in the case of about 8% of events and out of them only 25$\%$ take place in the distance larger than 0.5 cm from the primary interaction. It was also established that light signals produced at primary and secondary interactions overlap with the delay which distribution is characterized by FWHM of about 40 ps. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1312.0250v1-abstract-full').style.display = 'none'; document.getElementById('1312.0250v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 December, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Bio-Algorithms and Med-Systems (14 pages, 9 figures)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(2), 71-77 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.6153">arXiv:1311.6153</a> <span> [<a href="https://arxiv.org/pdf/1311.6153">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2013-0109">10.1515/bams-2013-0109 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> J-PET analysis framework for the prototype TOF-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Stola%2C+K">K. Stola</a>, <a href="/search/physics?searchtype=author&query=Trybek%2C+D">D. Trybek</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1311.6153v2-abstract-short" style="display: inline;"> Novel TOF-PET scanner solutions demand, apart from the state of the art detectors, software for fast processing of the gathered data, monitoring of the whole scanner and reconstruction of the PET image. In this article we present an analysis framework for the novel STRIP-PET scanner developed by the J-PET collaboration in the Institute of Physics of the Jagiellonian University. This software is ba… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6153v2-abstract-full').style.display = 'inline'; document.getElementById('1311.6153v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.6153v2-abstract-full" style="display: none;"> Novel TOF-PET scanner solutions demand, apart from the state of the art detectors, software for fast processing of the gathered data, monitoring of the whole scanner and reconstruction of the PET image. In this article we present an analysis framework for the novel STRIP-PET scanner developed by the J-PET collaboration in the Institute of Physics of the Jagiellonian University. This software is based on the ROOT package used in many particle physics experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6153v2-abstract-full').style.display = 'none'; document.getElementById('1311.6153v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 March, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(1), 33-36 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.6152">arXiv:1311.6152</a> <span> [<a href="https://arxiv.org/pdf/1311.6152">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2013-0105">10.1515/bams-2013-0105 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A novel method for calibration and monitoring of time synchronization of TOF-PET scanners by means of cosmic rays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1311.6152v2-abstract-short" style="display: inline;"> All of the present methods for calibration and monitoring of TOF-PET scanner detectors utilize radioactive isotopes such as e.g. $^{22}$Na or $^{68}$Ge, which are placed or rotate inside the scanner. In this article we describe a novel method based on the cosmic rays application to the PET calibration and monitoring methods. The concept allows to overcome many of the drawbacks of the present metho… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6152v2-abstract-full').style.display = 'inline'; document.getElementById('1311.6152v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.6152v2-abstract-full" style="display: none;"> All of the present methods for calibration and monitoring of TOF-PET scanner detectors utilize radioactive isotopes such as e.g. $^{22}$Na or $^{68}$Ge, which are placed or rotate inside the scanner. In this article we describe a novel method based on the cosmic rays application to the PET calibration and monitoring methods. The concept allows to overcome many of the drawbacks of the present methods and it is well suited for newly developed TOF-PET scanners with a large longitudinal field of view. The method enables also monitoring of the quality of the scintillator materials and in general allows for the continuous quality assurance of the PET detector performance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6152v2-abstract-full').style.display = 'none'; document.getElementById('1311.6152v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 March, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(1), 19-25 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.6129">arXiv:1311.6129</a> <span> [<a href="https://arxiv.org/pdf/1311.6129">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2013-0103">10.1515/bams-2013-0103 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Application of WLS strips for position determination in Strip PET tomograph based on plastic scintillators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1311.6129v1-abstract-short" style="display: inline;"> A method of determination of a gamma quantum absorption point in a plastic scintillator block using a matrix of wavelength-shifting (WLS) strips is proposed. Application of this method for improvement of position resolution in newly proposed PET detectors based on plastic scintillators is presented. The method enables to reduce parallax errors in reconstruction of images which occurs in the presen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6129v1-abstract-full').style.display = 'inline'; document.getElementById('1311.6129v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.6129v1-abstract-full" style="display: none;"> A method of determination of a gamma quantum absorption point in a plastic scintillator block using a matrix of wavelength-shifting (WLS) strips is proposed. Application of this method for improvement of position resolution in newly proposed PET detectors based on plastic scintillators is presented. The method enables to reduce parallax errors in reconstruction of images which occurs in the presently used Positron Emission Tomography scanners. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6129v1-abstract-full').style.display = 'none'; document.getElementById('1311.6129v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Bio-Algorithms and Med-Systems (6 pages, 4 figures)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med-Systems 10(2), 59-63 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.6127">arXiv:1311.6127</a> <span> [<a href="https://arxiv.org/pdf/1311.6127">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1515/bams-2013-0104">10.1515/bams-2013-0104 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A novel method based solely on FPGA units enabling measurement of time and charge of analog signals in Positron Emission Tomography </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1311.6127v1-abstract-short" style="display: inline;"> This article presents a novel technique for precise measurement of time and charge based solely on FPGA (Field Programmable Gate Array) device and few satellite discrete electronic components used in Positron Emission Tomography (PET). Described approach simplifies electronic circuits, reduces the power consumption, lowers costs, merges front-end electronics with digital electronics and also makes… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6127v1-abstract-full').style.display = 'inline'; document.getElementById('1311.6127v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.6127v1-abstract-full" style="display: none;"> This article presents a novel technique for precise measurement of time and charge based solely on FPGA (Field Programmable Gate Array) device and few satellite discrete electronic components used in Positron Emission Tomography (PET). Described approach simplifies electronic circuits, reduces the power consumption, lowers costs, merges front-end electronics with digital electronics and also makes more compact final design. Furthermore, it allows to measure time when analog signals cross a reference voltage at different threshold levels with a very high precision of $\sim$ 10ps (rms) and thus enables sampling of signals in a voltage domain. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.6127v1-abstract-full').style.display = 'none'; document.getElementById('1311.6127v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Bio-Algorithms and Med.-Systems (6 pages, 6 figures)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Bio-Algorithms and Med.-Systems 10(1), 41-45 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.1614">arXiv:1310.1614</a> <span> [<a href="https://arxiv.org/pdf/1310.1614">pdf</a>, <a href="https://arxiv.org/ps/1310.1614">ps</a>, <a href="https://arxiv.org/format/1310.1614">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolBSupp.6.1027">10.5506/APhysPolBSupp.6.1027 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> System Response Kernel Calculation for List-mode Reconstruction in Strip PET Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1310.1614v1-abstract-short" style="display: inline;"> Reconstruction of the image in Positron Emission Tomographs (PET) requires the knowledge of the system response kernel which describes the contribution of each pixel (voxel) to each tube of response (TOR). This is especially important in list-mode reconstruction systems, where an efficient analytical approximation of such function is required. In this contribution, we present a derivation of the s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1614v1-abstract-full').style.display = 'inline'; document.getElementById('1310.1614v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.1614v1-abstract-full" style="display: none;"> Reconstruction of the image in Positron Emission Tomographs (PET) requires the knowledge of the system response kernel which describes the contribution of each pixel (voxel) to each tube of response (TOR). This is especially important in list-mode reconstruction systems, where an efficient analytical approximation of such function is required. In this contribution, we present a derivation of the system response kernel for a novel 2D strip PET. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1614v1-abstract-full').style.display = 'none'; document.getElementById('1310.1614v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 2 figures; Presented at Symposium on applied nuclear physics and innovative technologies, Cracow, 03-06 June 2013</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Polon. B Proceed. Suppl. 6, 1027-1036 (2013) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.1612">arXiv:1310.1612</a> <span> [<a href="https://arxiv.org/pdf/1310.1612">pdf</a>, <a href="https://arxiv.org/format/1310.1612">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.5506/APhysPolBSupp.6.1121">10.5506/APhysPolBSupp.6.1121 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Application of Compressive Sensing Theory for the Reconstruction of Signals in Plastic Scintillators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kochanowski%2C+A">A. Kochanowski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowal%2C+J">J. Kowal</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Molenda%2C+M">M. Molenda</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik%2C+M">M. Pawlik</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Salabura%2C+P">P. Salabura</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=S%C5%82omski%2C+A">A. S艂omski</a>, <a href="/search/physics?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/physics?searchtype=author&query=Strzelecki%2C+A">A. Strzelecki</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Zieli%C5%84ski%2C+M">M. Zieli艅ski</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1310.1612v1-abstract-short" style="display: inline;"> Compressive Sensing theory says that it is possible to reconstruct a measured signal if an enough sparse representation of this signal exists in comparison to the number of random measurements. This theory was applied to reconstruct signals from measurements of plastic scintillators. Sparse representation of obtained signals was found using SVD transform. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.1612v1-abstract-full" style="display: none;"> Compressive Sensing theory says that it is possible to reconstruct a measured signal if an enough sparse representation of this signal exists in comparison to the number of random measurements. This theory was applied to reconstruct signals from measurements of plastic scintillators. Sparse representation of obtained signals was found using SVD transform. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1612v1-abstract-full').style.display = 'none'; document.getElementById('1310.1612v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 3 figures; Presented at Symposium on applied nuclear physics and innovative technologies, Cracow, 03-06 June 2013</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Acta Phys. Polon. B Proceed. Suppl. 6, 1121-1127 (2013) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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