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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <base href="https://journals.iucr.org/s/issues/2017/04/00/vv5161/" /> <title>(IUCr) Comparison of phantom materials for use in quality assurance of microbeam radiation therapy</title> <script type="text/javascript" src="https://journals.iucr.org/javascript/analytics.js"></script> <link rel="schema.DC" href="https://purl.org/dc/elements/1.1/" /> <link rel="schema.DCTERMS" href="https://purl.org/dc/terms/" /> <link rel="schema.prism" href="https://prismstandard.org/namespaces/1.2/basic/" /> <meta name="twitter:card" content="summary" /> <meta name="twitter:description" content="Solid phantoms that are routinely used in quality assurance (QA) of conventional megavoltage X-ray beam radiation therapy may not be designed for use in synchrotron-based microbeam radiation therapy (MRT). This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations." /> <meta name="twitter:image" content="https://journals.iucr.org/s/issues/2017/04/00/vv5161/vv5161largethumb.jpg" /> <meta name="twitter:site" content="@JSynchrotronRad" /> <meta name="twitter:title" content="Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" /> <meta property="og:description" content="Solid phantoms that are routinely used in quality assurance (QA) of conventional megavoltage X-ray beam radiation therapy may not be designed for use in synchrotron-based microbeam radiation therapy (MRT). This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations." /> <meta property="og:image" content="https://journals.iucr.org/s/issues/2017/04/00/vv5161/vv5161largethumb.jpg" /> <meta property="og:image:alt" content="Image from Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" /> <meta property="og:image:height" content="300" /> <meta property="og:image:secureurl" content="https://journals.iucr.org/s/issues/2017/04/00/vv5161/vv5161largethumb.jpg" /> <meta property="og:image:type" content="image/jpeg" /> <meta property="og:image:width" content="300" /> <meta property="og:locale" content="en_US" /> <meta property="og:site_name" content="Journal of Synchrotron Radiation" /> <meta property="og:title" content="Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" /> <meta property="og:type" content="article" /> <meta property="og:updated_time" content="2024-05-21T15:46:22Z" /> <meta property="og:url" content="https://journals.iucr.org/s/issues/2017/04/00/vv5161/" /> <meta name="DC.copyright" content="Copyright (c) 2017 International Union of Crystallography" /> <meta name="DC.coverage" content="" /> <meta name="DC.creator" content="Cameron, M." /> <meta name="DC.creator" content="Cornelius, I." /> <meta name="DC.creator" content="Cutajar, D." /> <meta name="DC.creator" content="Davis, J." /> <meta name="DC.creator" content="Rosenfeld, A." /> <meta name="DC.creator" content="Lerch, M." /> <meta name="DC.creator" content="Guatelli, S." /> <meta name="authors" content="Cameron, M.|Cornelius, I.|Cutajar, D.|Davis, J.|Rosenfeld, A.|Lerch, M.|Guatelli, S." /> <meta name="DC.date" content="2017-05-18" /> <meta name="DC.description" content="Microbeam radiation therapy (MRT) is a promising radiotherapy modality that uses arrays of spatially fractionated micrometre-sized beams of synchrotron radiation to irradiate tumours. Routine dosimetry quality assurance (QA) prior to treatment is necessary to identify any changes in beam condition from the treatment plan, and is undertaken using solid homogeneous phantoms. Solid phantoms are designed for, and routinely used in, megavoltage X-ray beam radiation therapy. These solid phantoms are not necessarily designed to be water-equivalent at low X-ray energies, and therefore may not be suitable for MRT QA. This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA. Simulated dose profiles of various phantom materials were compared with those calculated in water under the same conditions. The phantoms under consideration were RMI457 Solid Water (Gammex-RMI, Middleton, WI, USA), Plastic Water (CIRS, Norfolk, VA, USA), Plastic Water DT (CIRS, Norfolk, VA, USA), PAGAT (CIRS, Norfolk, VA, USA), RW3 Solid Phantom (PTW Freiburg, Freiburg, Germany), PMMA, Virtual Water (Med-Cal, Verona, WI, USA) and Perspex. RMI457 Solid Water and Virtual Water were found to be the best approximations for water in MRT dosimetry (within ±3% deviation in peak and 6% in valley). RW3 and Plastic Water DT approximate the relative dose distribution in water (within ±3% deviation in the peak and 5% in the valley). PAGAT, PMMA, Perspex and Plastic Water are not recommended to be used as phantoms for MRT QA, due to dosimetric discrepancies greater than 5%." /> <meta name="DC.format" content="unicode" /> <meta name="DC.identifier" content="doi:10.1107/S1600577517005641" /> <meta name="DC.language" content="en" /> <meta name="DC.link" content="https://journals.iucr.org/paper?vv5161" /> <meta name="DC.publisher" content="International Union of Crystallography" /> <meta name="DC.relation" content="" /> <meta name="DC.rights" content="Copyright (c) 2017 International Union of Crystallography" /> <meta name="DC.source" content="urn:issn:1600-5775" /> <meta name="DC.subject" content="MICROBEAM RADIATION THERAPY" /> <meta name="DC.subject" content="POLYMER PHANTOMS" /> <meta name="DC.subject" content="DOSIMETRY" /> <meta name="DC.subject" content="MONTE CARLO" /> <meta name="DC.subject" content="GEANT4" /> <meta name="DC.teaser" content="Solid phantoms that are routinely used in quality assurance (QA) of conventional megavoltage X-ray beam radiation therapy may not be designed for use in synchrotron-based microbeam radiation therapy (MRT). This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations." /> <meta name="description" content="Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" /> <meta name="title" content="Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" /> <meta name="DC.title" content="Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" /> <meta name="DC.type" content="text" /> <meta name="DCTERMS.abstract" content="Microbeam radiation therapy (MRT) is a promising radiotherapy modality that uses arrays of spatially fractionated micrometre-sized beams of synchrotron radiation to irradiate tumours. Routine dosimetry quality assurance (QA) prior to treatment is necessary to identify any changes in beam condition from the treatment plan, and is undertaken using solid homogeneous phantoms. Solid phantoms are designed for, and routinely used in, megavoltage X-ray beam radiation therapy. These solid phantoms are not necessarily designed to be water-equivalent at low X-ray energies, and therefore may not be suitable for MRT QA. This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA. Simulated dose profiles of various phantom materials were compared with those calculated in water under the same conditions. The phantoms under consideration were RMI457 Solid Water (Gammex-RMI, Middleton, WI, USA), Plastic Water (CIRS, Norfolk, VA, USA), Plastic Water DT (CIRS, Norfolk, VA, USA), PAGAT (CIRS, Norfolk, VA, USA), RW3 Solid Phantom (PTW Freiburg, Freiburg, Germany), PMMA, Virtual Water (Med-Cal, Verona, WI, USA) and Perspex. RMI457 Solid Water and Virtual Water were found to be the best approximations for water in MRT dosimetry (within ±3% deviation in peak and 6% in valley). RW3 and Plastic Water DT approximate the relative dose distribution in water (within ±3% deviation in the peak and 5% in the valley). PAGAT, PMMA, Perspex and Plastic Water are not recommended to be used as phantoms for MRT QA, due to dosimetric discrepancies greater than 5%." /> <meta name="prism.copyright" content="Copyright (c) 2017 International Union of Crystallography" /> <meta name="prism.doi" content="https://doi.org/10.1107/S1600577517005641" /> <meta name="prism.eissn" content="1600-5775" /> <meta name="prism.endingPage" content="876" /> <meta name="prism.issn" content="1600-5775" /> <meta name="prism.number" content="4" /> <meta name="prism.publicationDate" content="2017-05-18" /> <meta name="prism.publicationName" content="Journal of Synchrotron Radiation" /> <meta name="prism.rightsAgent" content="med@iucr.org" /> <meta name="prism.section" content="research papers" /> <meta name="prism.startingPage" content="866" /> <meta name="prism.volume" content="24" /> <meta name="keywords" content="MICROBEAM RADIATION THERAPY; POLYMER PHANTOMS; DOSIMETRY; MONTE CARLO; GEANT4" /> <meta name="copyright" content="Copyright (c) 2017 International Union of Crystallography" /> <meta name="ROBOTS" content="NOARCHIVE" /> <meta name="citation_abstract" content="Microbeam radiation therapy (MRT) is a promising radiotherapy modality that uses arrays of spatially fractionated micrometre-sized beams of synchrotron radiation to irradiate tumours. Routine dosimetry quality assurance (QA) prior to treatment is necessary to identify any changes in beam condition from the treatment plan, and is undertaken using solid homogeneous phantoms. Solid phantoms are designed for, and routinely used in, megavoltage X-ray beam radiation therapy. These solid phantoms are not necessarily designed to be water-equivalent at low X-ray energies, and therefore may not be suitable for MRT QA. This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA. Simulated dose profiles of various phantom materials were compared with those calculated in water under the same conditions. The phantoms under consideration were RMI457 Solid Water (Gammex-RMI, Middleton, WI, USA), Plastic Water (CIRS, Norfolk, VA, USA), Plastic Water DT (CIRS, Norfolk, VA, USA), PAGAT (CIRS, Norfolk, VA, USA), RW3 Solid Phantom (PTW Freiburg, Freiburg, Germany), PMMA, Virtual Water (Med-Cal, Verona, WI, USA) and Perspex. RMI457 Solid Water and Virtual Water were found to be the best approximations for water in MRT dosimetry (within ±3% deviation in peak and 6% in valley). RW3 and Plastic Water DT approximate the relative dose distribution in water (within ±3% deviation in the peak and 5% in the valley). PAGAT, PMMA, Perspex and Plastic Water are not recommended to be used as phantoms for MRT QA, due to dosimetric discrepancies greater than 5%." /> <meta name="citation_abstract_html_url" content="https://journals.iucr.org/paper?vv5161" /> <meta name="citation_author" content="Cameron, M." /> <meta name="citation_author_institution" content="CMRP, University of Wollongong, Wollongong, NSW 2522, Australia" /> <meta name="citation_author_email" content="mc815@uowmail.edu.au" /> <meta name="citation_author" content="Cornelius, I." /> <meta name="citation_author_institution" content="Australian Synchrotron, Melbourne, VIC 3168, Australia" /> <meta name="citation_author_email" content="iwan@amentum.com.au" /> <meta name="citation_author" content="Cutajar, D." /> <meta name="citation_author_institution" content="CMRP, University of Wollongong, Wollongong, NSW 2522, Australia" /> <meta name="citation_author_email" content="deanc@uow.edu.au" /> <meta name="citation_author" content="Davis, J." /> <meta name="citation_author_institution" content="CMRP, University of Wollongong, Wollongong, NSW 2522, Australia" /> <meta name="citation_author_email" content="jeremyd@uow.edu.au" /> <meta name="citation_author" content="Rosenfeld, A." /> <meta name="citation_author_institution" content="CMRP, University of Wollongong, Wollongong, NSW 2522, Australia" /> <meta name="citation_author_email" content="anatoly@uow.edu.au" /> <meta name="citation_author" content="Lerch, M." /> <meta name="citation_author_institution" content="CMRP, University of Wollongong, Wollongong, NSW 2522, Australia" /> <meta name="citation_author_email" content="mlerch@uow.edu.au" /> <meta name="citation_author" content="Guatelli, S." /> <meta name="citation_author_institution" content="CMRP, University of Wollongong, Wollongong, NSW 2522, Australia" /> <meta name="citation_author_email" content="susanna@uow.edu.au" /> <meta name="citation_date" content="2017-07-01" /> <meta name="citation_doi" content="10.1107/S1600577517005641" /> <meta name="citation_firstpage" content="866" /> <meta name="citation_fulltext_url" content="https://journals.iucr.org/s/issues/2017/04/00/vv5161/" /> <meta name="citation_issn" content="1600-5775" /> <meta name="citation_issue" content="4" /> <meta name="citation_journal_abbrev" content="J Synchrotron Rad" /> <meta name="citation_journal_abbrev" content="J Synchrotron Radiat" /> <meta name="citation_journal_title" content="Journal of Synchrotron Radiation" /> <meta name="citation_keywords" content="MICROBEAM RADIATION THERAPY; POLYMER PHANTOMS; DOSIMETRY; MONTE CARLO; GEANT4" /> <meta name="citation_language" content="en" /> <meta name="citation_lastpage" content="876" /> <meta name="citation_online_date" content="2017-05-18" /> <meta name="citation_pdf_url" content="https://journals.iucr.org/s/issues/2017/04/00/vv5161/vv5161.pdf" /> <meta name="citation_publisher" content="International Union of Crystallography" /> <meta name="citation_reference" content="citation_author=Agostinelli S.; citation_year=2003; citation_journal_title=Nucl. 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This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations. 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This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations. 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Synchrotron Rad.</a></span><span style="color:#000;"> (2017). </span><a href="https://journals.iucr.org/s/contents/backissues.html"><b>24</b></a>, <span class="ica_pages"> 866-876</span><br /><span class="ica_doi"><a title="Open URL link" href="https://doi.org/10.1107/S1600577517005641">https://doi.org/10.1107/S1600577517005641</a></span></div> </div><div class="ica_headerright"><div class="art_issuecontentsfunctions_narrow"><div class="article_functions af_horizontal"><div class="bubbleInfo"><div class="sidebutton"><a href="//journals.iucr.org/s/issues/2017/04/00/vv5161/vv5161.pdf" title="PDF"><img class="art_icon" style="top: 0px; left: 0px; width: 20px;" alt="Download PDF of article" src="https://journals.iucr.org/logos/buttonlogos/pdf.png"/></a></div><div style="opacity: 0;" class="popup"><span class="popuphd"><a href="//journals.iucr.org/s/issues/2017/04/00/vv5161/vv5161.pdf" title="PDF">Download PDF of article</a></span><img class="but_close" src="/logos/buttonlogos/cross.png" alt="close" /></div></div><div class="bubbleInfo"><div class="sidebutton"><a title="Download citation" href="https://scripts.iucr.org/cgi-bin/biblio_page?vv5161"><img class="art_icon" src="https://journals.iucr.org/logos/buttonlogos/citation.png" alt="Download citation" style="top: 0px; left: 23px; width: 20px;" /></a></div><div class="popup" style="opacity: 0;"><img class="but_close" src="/logos/buttonlogos/cross.png" alt="close" /><span class="popuphd">Download citation</span><br /><form method="post" action="https://scripts.iucr.org/cgi-bin/biblio"><table align="center" border="0" width="125px"><tbody><tr><td align="left" valign="top"> Format<input type="hidden" value="download" name="Action" /><input type="hidden" value="vv5161" name="cnor" /></td><td align="right"><input type="radio" checked="checked" value="BIBTeX" name="saveas" /></td><td align="left"> BIBTeX</td></tr><tr><td align="right" colspan="2"><input type="radio" value="EndNote" name="saveas" /></td><td align="left"> EndNote</td></tr><tr><td align="right" colspan="2"><input type="radio" value="RefMan" name="saveas" /></td><td align="left"> RefMan</td></tr><tr><td align="right" colspan="2"><input type="radio" value="Refer" name="saveas" /></td><td align="left"> Refer</td></tr><tr><td align="right" colspan="2"><input type="radio" value="Medline" name="saveas" /></td><td align="left"> Medline</td></tr><tr><td align="right" colspan="2"><input type="radio" value="CIF" name="saveas" /></td><td align="left"> CIF</td></tr><tr><td align="right" colspan="2"><input type="radio" value="SGML" name="saveas" /></td><td align="left"> SGML</td></tr><tr><td align="right" colspan="2"><input type="radio" value="text" name="saveas" /></td><td align="left"> Text</td></tr><tr><td align="right" colspan="2"><input type="radio" value="plaintext" name="saveas" /></td><td align="left"> Plain Text</td></tr><tr><td align="center" colspan="3"><input align="bottom" type="image" src="/logos/buttonlogos/downloadborder.gif" name="download_bibliographic_record" /></td></tr></tbody></table> </form></div></div><div class="bubbleInfo"><div class="sidebutton"><a href="https://scripts.iucr.org/cgi-bin/citedin?vv5161" title="Statistics"><img class="art_icon" style="top: 0px; left: 46px; width: 20px;" alt="Statistics" src="https://journals.iucr.org/logos/buttonlogos/pageviews.png"/></a></div><div style="opacity: 0;" class="popup"><img class="but_close" src="/logos/buttonlogos/cross.png" alt="close" /><div class="downloads" id="vv5161_stnar"><span class="popuphd"><a href="https://scripts.iucr.org/cgi-bin/citedin?vv5161" title="Statistics">Article statistics</a></span></div></div></div><div class="bubbleInfo"><div class="sidebutton"><a href="https://journals.iucr.org/s/issues/2017/04/00/issconts.html"><img alt="" class="art_icon" style="top: 0px; left: 69px; width: 20px;" title="Issue contents" src="https://journals.iucr.org/logos/buttonlogos//issue.png" /></a></div><div style="opacity: 0;" class="popup"><span class="popuphd"><a href="https://journals.iucr.org/s/issues/2017/04/00/issconts.html">Issue contents</a></span><img class="but_close" src="/logos/buttonlogos/cross.png" alt="close" /></div></div><div class="bubbleInfo"><div class="sidebutton"><a id="vv5161cl" addthis:url="https://doi.org/10.1107/S1600577517005641" addthis:title="Comparison of phantom materials for use in quality assurance of microbeam radiation therapy" addthis:description=" Solid phantoms that are routinely used in quality assurance (QA) of conventional megavoltage X-ray beam radiation therapy may not be designed for use in synchrotron-based microbeam radiation therapy (MRT). This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations. " href="#" class="addthis_button_compact"><img onclick="$('#vv5161pl').css('display','none')" class="art_icon" src="https://journals.iucr.org/logos/buttonlogos/addthis.png" alt="share" style="top: 0px; left: 92px; width: 20px;"/></a></div><div id="vv5161pl" style="opacity: 0;" class="popup"><span class="popuphd" onclick="$(this).parent().css('display','none');$('#vv5161cl').trigger('click');return false;"><a href="" onclick="return false;">Share</a></span><img class="but_close" src="/logos/buttonlogos/cross.png" alt="close" /></div></div></div> </div><div class="jh_openaccesslogo"><div class="openaccesslogo"><div class="oalogotext" title="To purchase a pay per view version of this article click here"><a class="scrpt_buylogotext" href="https://journals.iucr.org/paper?cnor=vv5161&buy=yes#buy">Access<img alt="pay per view" class="scriptaccesslogo" src="/logos/buttonlogos/buy.gif" /></a> <a title="IUCr Associates, click here to download this article" class="scrpt_buylogotext" href="https://scripts.iucr.org/cgi-bin/adla.pl?cnor=vv5161"><img style="height:18px;" alt="Associates download" class="scriptaccesslogo" src="/logos/buttonlogos/associates_download.gif" /></a></div></div></div></div><div class="clear"></div></div><div class="ica_body"> <div class="ica_bodyleft"><div class="thumbinmain"><a href="//journals.iucr.org/s/issues/2017/04/00/vv5161/index.html" target="_parent"><img id="vv5161issthumbinmain" src="https://scripts.iucr.org/cgi-bin/sendimage?image=/s/issues/2017/04/00/vv5161/vv5161thumbnail.gif" alt="link to html" /></a></div></div><div class="ica_bodyright"><div class="ica_title"><h1 class="atl"><a href="//journals.iucr.org/s/issues/2017/04/00/vv5161/index.html"> Comparison of phantom materials for use in quality assurance of microbeam radiation therapy</a></h1></div> <div style="float: right; text-align: right; width: 100px;"> <script type="text/javascript" src="https://crossmark-cdn.crossref.org/widget/v2.0/widget.js"></script> <a data-target="crossmark"><img src="https://crossmark-cdn.crossref.org/widget/v2.0/logos/CROSSMARK_Color_square_no_text.svg" width="60" /></a> </div>  <div class="ica_authors"><a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Cameron, M."><span class="au">M. Cameron</span></a>, <a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Cornelius, I."><span class="au">I. Cornelius</span></a>, <a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Cutajar, D."><span class="au">D. Cutajar</span></a>, <a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Davis, J."><span class="au">J. Davis</span></a>, <a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Rosenfeld, A."><span class="au">A. Rosenfeld</span></a>, <a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Lerch, M."><span class="au">M. Lerch</span></a> and <a href="https://scripts.iucr.org/cgi-bin/citedin?search_on=name&author_name=Guatelli, S."><span class="au">S. Guatelli</span></a></div><div class="ica_abstract">Microbeam radiation therapy (MRT) is a promising radiotherapy modality that uses arrays of spatially fractionated micrometre-sized beams of synchrotron radiation to irradiate tumours. Routine dosimetry quality assurance (QA) prior to treatment is necessary to identify any changes in beam condition from the treatment plan, and is undertaken using solid homogeneous phantoms. Solid phantoms are designed for, and routinely used in, megavoltage X-ray beam radiation therapy. These solid phantoms are not necessarily designed to be water-equivalent at low X-ray energies, and therefore may not be suitable for MRT QA. This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA. Simulated dose profiles of various phantom materials were compared with those calculated in water under the same conditions. The phantoms under consideration were RMI457 Solid Water (Gammex-RMI, Middleton, WI, USA), Plastic Water (CIRS, Norfolk, VA, USA), Plastic Water DT (CIRS, Norfolk, VA, USA), PAGAT (CIRS, Norfolk, VA, USA), RW3 Solid Phantom (PTW Freiburg, Freiburg, Germany), PMMA, Virtual Water (Med-Cal, Verona, WI, USA) and Perspex. RMI457 Solid Water and Virtual Water were found to be the best approximations for water in MRT dosimetry (within ±3% deviation in peak and 6% in valley). RW3 and Plastic Water DT approximate the relative dose distribution in water (within ±3% deviation in the peak and 5% in the valley). PAGAT, PMMA, Perspex and Plastic Water are not recommended to be used as phantoms for MRT QA, due to dosimetric discrepancies greater than 5%.</div><div class="kwdg"><span class="kwdg_head">Keywords: </span><a href="https://scripts.iucr.org/cgi-bin/full_search?words=microbeam%20radiation%20therapy&Action=Search">microbeam radiation therapy</a>; <a href="https://scripts.iucr.org/cgi-bin/full_search?words=polymer%20phantoms&Action=Search">polymer phantoms</a>; <a href="https://scripts.iucr.org/cgi-bin/full_search?words=dosimetry&Action=Search">dosimetry</a>; <a href="https://scripts.iucr.org/cgi-bin/full_search?words=Monte%20Carlo&Action=Search">Monte Carlo</a>; <a href="https://scripts.iucr.org/cgi-bin/full_search?words=Geant4&Action=Search"><span class="it"><i>Geant4</i></span></a>.</div><div class="ica_readmore"><a href="//journals.iucr.org/s/issues/2017/04/00/vv5161/index.html">Read article</a><a href="https://scripts.iucr.org/cgi-bin/similar?wordList=%22microbeam%20radiation%20therapy%22%20or%20%22polymer%20phantoms%22%20or%20%22dosimetry%22%20or%20%22monte%20carlo%22%20or%20%22geant4%22&from=vv5161">Similar articles</a></div></div>  </div>  <div class="clear"></div> <script src="//api.growkudos.com/widgets/article/10.1107/S1600577517005641"></script> <script src="//api.growkudos.com/widgets/resources/10.1107/S1600577517005641"></script><br/></div> <div class="clear"></div></div> </div> <div class="clear"></div> <div id="journalsocialmedia"><table summary="social media" class="socials"><tbody><tr><td class="socialtitle">Follow J. 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