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therapy</title> <meta name="description" content="Search results for: radiation therapy"> <meta name="keywords" content="radiation therapy"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="radiation therapy"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 3231</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: radiation therapy</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3231</span> Optimization of Radiation Therapy with a Nanotechnology Based Enzymatic Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20D.%20Esposito">R. D. Esposito</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20M.%20Barber%C3%A1"> V. M. Barberá</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Garc%C3%ADa%20Morales"> P. García Morales</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Dorado%20Rodr%C3%ADguez"> P. Dorado Rodríguez</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Sanz"> J. Sanz</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Fuentes"> M. Fuentes</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Planes%20Meseguer"> D. Planes Meseguer</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Saceda"> M. Saceda</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Fern%C3%A1ndez%20Fornos"> L. Fernández Fornos</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20P.%20Ventero"> M. P. Ventero</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Results obtained by our group on glioblastoma multiforme (GBM) primary cultures , show a dramatic potentiation of radiation effects when 2 units/ml of D-amino acid oxidase (DAO) enzyme are added, free or immobilized in magnetic nanoparticles, to irradiated samples just after the irradiation. Cell cultures were exposed to radiation doses of 7Gy and 15Gy of 6 MV photons from a clinical linear accelerator. At both doses, we observed a clear enhancing effect of radiation-induced damages due to the addition of DAO. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=D-amino%20Acid%20Oxidase%20%28DAO%29%20enzyme" title="D-amino Acid Oxidase (DAO) enzyme">D-amino Acid Oxidase (DAO) enzyme</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20particles" title=" magnetic particles"> magnetic particles</a>, <a href="https://publications.waset.org/abstracts/search?q=nanotechnology" title=" nanotechnology"> nanotechnology</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20therapy%20enhancement" title=" radiation therapy enhancement"> radiation therapy enhancement</a> </p> <a href="https://publications.waset.org/abstracts/29814/optimization-of-radiation-therapy-with-a-nanotechnology-based-enzymatic-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29814.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">523</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3230</span> Preoperative versus Postoperative Radiation Therapy in Patients with Soft Tissue Sarcoma of the Extremity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=AliAkbar%20Hafezi">AliAkbar Hafezi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jalal%20Taherian"> Jalal Taherian</a>, <a href="https://publications.waset.org/abstracts/search?q=Jamshid%20Abedi"> Jamshid Abedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mahsa%20Elahi"> Mahsa Elahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Behnam%20Kadkhodaei"> Behnam Kadkhodaei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Soft tissue sarcomas (STS) are generally treated with a combination of limb preservation surgery and radiation therapy. Today, preoperative radiation therapy is considered for accurate treatment volume and smaller field size. Therefore, this study was performed to compare preoperative with postoperative radiation therapy in patients with extremity STS. Methods: In this non-randomized clinical trial, patients with localized extremity STS referred to the orthopedic clinics in Iran from 2021 to 2023 were studied. Patients were randomly divided into two groups: preoperative and postoperative radiation therapy. The two groups of patients were compared in terms of acute (wound dehiscence and infection) and late (limb edema, subcutaneous fibrosis, and joint stiffness) complications and their severity, as well as local recurrence and other one-year outcomes. Results: A total of 80 patients with localized extremity STS were evaluated in two treatment groups. The groups were matched in terms of age, sex, history of diabetes mellitus, hypertension, smoking, involved side, involved extremity, lesion location, and tumor histopathology. The acute complications of treatment in the two groups of patients did not differ significantly (P > 0.05). Of the late complications, only joint stiffness between the two groups had significant statistical differences (P < 0.001). The severity of all three late complications in the postoperative radiation therapy group was significantly higher (P < 0.05). There was no significant difference between the two groups in terms of the rate of local recurrence of other one-year outcomes (P > 0.05). Conclusion: This study showed that in patients with localized extremity STS, the two therapeutic approaches of adjuvant and neoadjuvant radiation therapy did not differ significantly in terms of local recurrence and distant metastasis during the one-year follow-up period and due to fewer late complications in preoperative radiotherapy group, this treatment approach can be a better choice than postoperative radiation therapy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soft%20tissue%20sarcoma" title="soft tissue sarcoma">soft tissue sarcoma</a>, <a href="https://publications.waset.org/abstracts/search?q=extremity" title=" extremity"> extremity</a>, <a href="https://publications.waset.org/abstracts/search?q=preoperative%20radiation%20therapy" title=" preoperative radiation therapy"> preoperative radiation therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=postoperative%20radiation%20therapy" title=" postoperative radiation therapy"> postoperative radiation therapy</a> </p> <a href="https://publications.waset.org/abstracts/185610/preoperative-versus-postoperative-radiation-therapy-in-patients-with-soft-tissue-sarcoma-of-the-extremity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185610.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">44</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3229</span> Neurological Complications Related to Anesthesia in Pediatric Patients Receiving Radiation Therapy under Anesthesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Behzad%20Sinaei">Behzad Sinaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahryar%20Sane"> Shahryar Sane</a>, <a href="https://publications.waset.org/abstracts/search?q=Behzad%20Kazemi%20Haki"> Behzad Kazemi Haki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Children with different malignancies usually experience potential neurologic complications when treated with radiation therapy, especially if under frequent anesthesia. The aim of this study was to evaluate the neurologic problems associated with anesthesia in pediatrics treated with radiotherapy under anesthesia. The study was a cross-sectional experiment that consisted of 133 pediatric patients with different malignancies who needed anesthesia for performing radiotherapy and were referred to Omid Charity Hospital and Imam Khomeini University Hospital from 2014 to 2020 by the census. P-values less than 0.05 were considered statistically significant (P-value < 0.05). Anesthesia complications in this study were slight and insignificant. Some were due to the effects of the tumor on other important organs or either previous radiation therapy or chemotherapy. For safe anesthesia, considering the effects of tumors on body organs and the neurological complications they cause can greatly help reduce anesthesia complications in pediatrics under radiation therapy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anesthesia" title="anesthesia">anesthesia</a>, <a href="https://publications.waset.org/abstracts/search?q=neurologic%20complications" title=" neurologic complications"> neurologic complications</a>, <a href="https://publications.waset.org/abstracts/search?q=pediatrics" title=" pediatrics"> pediatrics</a>, <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title=" radiotherapy"> radiotherapy</a> </p> <a href="https://publications.waset.org/abstracts/150880/neurological-complications-related-to-anesthesia-in-pediatric-patients-receiving-radiation-therapy-under-anesthesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150880.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">103</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3228</span> Mathematical Model of Cancer Growth under the Influence of Radiation Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Beata%20Jackowska-Zduniak">Beata Jackowska-Zduniak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We formulate and analyze a mathematical model describing dynamics of cancer growth under the influence of radiation therapy. The effect of this type of therapy is considered as an additional equation of discussed model. Numerical simulations show that delay, which is added to ordinary differential equations and represent time needed for transformation from one type of cells to the other one, affects the behavior of the system. The validation and verification of proposed model is based on medical data. Analytical results are illustrated by numerical examples of the model dynamics. The model is able to reconstruct dynamics of treatment of cancer and may be used to determine the most effective treatment regimen based on the study of the behavior of individual treatment protocols. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mathematical%20modeling" title="mathematical modeling">mathematical modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=ordinary%20differential%20equations" title=" ordinary differential equations"> ordinary differential equations</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20therapy" title=" radiation therapy"> radiation therapy</a> </p> <a href="https://publications.waset.org/abstracts/40378/mathematical-model-of-cancer-growth-under-the-influence-of-radiation-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40378.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">408</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3227</span> Palliative Orthovoltage Radiotherapy and Subcutaneous Infusion of Carboplatin for Treatment of Appendicular Osteosarcoma in Dogs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kathryn%20L.%20Duncan">Kathryn L. Duncan</a>, <a href="https://publications.waset.org/abstracts/search?q=Charles%20A.%20Kuntz"> Charles A. Kuntz</a>, <a href="https://publications.waset.org/abstracts/search?q=Alessandra%20C.%20Santamaria"> Alessandra C. Santamaria</a>, <a href="https://publications.waset.org/abstracts/search?q=James%20O.%20Simcock"> James O. Simcock</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Access to megavoltage radiation therapy for small animals is limited in many locations around the world. This can preclude the use of palliative radiation therapy for the treatment of appendicular osteosarcoma in dogs. The objective of this study was to retrospectively assess the adverse effects and survival times of dogs with appendicular osteosarcoma that were treated with hypofractionated orthovoltage radiation therapy and adjunctive carboplatin chemotherapy administered via a single subcutaneous infusion. Medical records were reviewed retrospectively to identify client-owned dogs with spontaneously occurring appendicular osteosarcoma that was treated with palliative orthovoltage radiation therapy and a single subcutaneous infusion of carboplatin. Data recorded included signalment, tumour location, results of diagnostic imaging, haematologic and serum biochemical analyses, adverse effects of radiation therapy and chemotherapy, and survival times. Kaplan-Meier survival analysis was performed, and log-rank analysis was used to determine the impact of specific patient variables on survival time. Twenty-three dogs were identified that met the inclusion criteria. Median survival time for dogs was 182 days. Eleven dogs had adverse haematologic effects, 3 had adverse gastrointestinal effects, 6 had adverse effects at the radiation site and 7 developed infections at the carboplatin infusion site. No statistically significant differences were identified in survival times based on sex, tumour location, development of infection, or pretreatment serum alkaline phosphatase. Median survival time and incidence of adverse effects were comparable to those previously reported in dogs undergoing palliative radiation therapy with megavoltage or cobalt radiation sources and conventional intravenous carboplatin chemotherapy. The use of orthovoltage palliative radiation therapy may be a reasonable alternative to megavoltage radiation in locations where access is limited. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title="radiotherapy">radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=veterinary%20oncology" title=" veterinary oncology"> veterinary oncology</a>, <a href="https://publications.waset.org/abstracts/search?q=chemotherapy" title=" chemotherapy"> chemotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=osteosarcoma" title=" osteosarcoma"> osteosarcoma</a> </p> <a href="https://publications.waset.org/abstracts/147082/palliative-orthovoltage-radiotherapy-and-subcutaneous-infusion-of-carboplatin-for-treatment-of-appendicular-osteosarcoma-in-dogs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147082.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3226</span> Measurement of IMRT Dose Distribution in Rando Head and Neck Phantom using EBT3 Film</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pegah%20Safavi">Pegah Safavi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Zehtabian"> Mehdi Zehtabian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Amin%20Mosleh-Shirazi"> Mohammad Amin Mosleh-Shirazi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cancer is one of the leading causes of death in the world. Radiation therapy is one of the main choices for cancer treatment. Intensity-modulated radiation therapy is a new type of radiation therapy technique available for vital structures such as the parathyroid glands. It is very important to check the accuracy of the delivered IMRT treatment because any mistake may lead to more complications for the patient. This paper describes an experiment to determine the accuracy of a dose measured by EBT3 film. To test this method, the EBT3 film on the head and neck of the Rando phantom was irradiated by an IMRT device and the irradiation was repeated twice. Finally, the dose designed by the irradiation system was compared with the dose measured by the EBT3 film. Using this criterion, the accuracy of the EBT3 film was evaluated. When using this criterion, a 95% agreement was reached between the planned treatment and the measured values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EBT3" title="EBT3">EBT3</a>, <a href="https://publications.waset.org/abstracts/search?q=phantom" title=" phantom"> phantom</a>, <a href="https://publications.waset.org/abstracts/search?q=accuracy" title=" accuracy"> accuracy</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer" title=" cancer"> cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=IMRT" title=" IMRT"> IMRT</a> </p> <a href="https://publications.waset.org/abstracts/146291/measurement-of-imrt-dose-distribution-in-rando-head-and-neck-phantom-using-ebt3-film" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146291.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">150</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3225</span> Peg@GDF3:TB3+ – Rb Nanocomposites for Deep-Seated X-Ray Induced Photodynamic Therapy in Oncology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.A.%20Kuchma">E.A. Kuchma</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photodynamic therapy (PDT) is considered an alternative and minimally invasive cancer treatment modality compared to chemotherapy and radiation therapy. PDT includes three main components: a photosensitizer (PS), oxygen, and a light source. PS is injected into the patient's body and then selectively accumulates in the tumor. However, the light used in PDT (spectral range 400–700 nm) is limited to superficial lesions, and the light penetration depth does not exceed a few cm. The problem of PDT (poor visible light transmission) can be solved by using X-rays. The penetration depth of X-rays is ten times greater than that of visible light. Therefore, X-ray radiation easily penetrates through the tissues of the body. The aim of this work is to develop universal nanocomposites for X-ray photodynamic therapy of deep and superficial tumors using scintillation nanoparticles of gadolinium fluoride (GdF3), doped with Tb3+, coated with a biocompatible coating (PEG) and photosensitizer RB (Rose Bengal). PEG@GdF3:Tb3+(15%) – RB could be used as an effective X-ray, UV, and photoluminescent mediator to excite a photosensitizer for generating reactive oxygen species (ROS) to kill tumor cells via photodynamic therapy. GdF3 nanoparticles can also be used as contrast agents for computed tomography (CT) and magnetic resonance imaging (MRI). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=X-ray%20induced%20photodynamic%20therapy" title="X-ray induced photodynamic therapy">X-ray induced photodynamic therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=scintillating%20nanoparticle" title=" scintillating nanoparticle"> scintillating nanoparticle</a>, <a href="https://publications.waset.org/abstracts/search?q=radiosensitizer" title=" radiosensitizer"> radiosensitizer</a>, <a href="https://publications.waset.org/abstracts/search?q=photosensitizer" title=" photosensitizer"> photosensitizer</a> </p> <a href="https://publications.waset.org/abstracts/152618/peg-at-gdf3tb3-rb-nanocomposites-for-deep-seated-x-ray-induced-photodynamic-therapy-in-oncology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152618.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">79</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3224</span> Nursing Experience for a Lung Cancer Patient Undergoing First Time Concurrent Chemotherapy and Radiation Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hui%20Ling%20Chen">Hui Ling Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article describes the experience of caring for a 68-year-old lung cancer patient undergoing the initial stage of concurrent chemotherapy and radiation therapy during the period of October 21 to November 16. In this study, the author collected data through observation, interviews, medical examination, and the use of Roy’s adaptation model as a guide for data collection and assessment. This study confirmed that chemotherapy induced nausea and vomiting, and radiation therapy impaired skin integrity. At the same time, the patient experienced an anxious reaction to the initial cancer diagnosis and the insertion of subcutaneous infusion ports at the start of medical treatment. Similarly, the patient’s wife shares his anxiety, not to mention the feeling of inadequacy from the lack of training in cancer care. In response, the nursing intervention strategy has included keeping the patient and his family informed of his treatment progress, transfer of cancer care knowledge, and providing them with spiritual support. For example, the nursing staff has helped them draw up a mutually agreeable dietary plan that best suits the wife’s cooking skills, provided them with knowledge in pre- and post-radiation skin care, as well as means to cope with nausea and vomiting reactions. The nursing staff has also worked on building rapport with the patient and his spouse, providing them with encouragement, caring attention and companionship. After the patient was discharged from the hospital, the nursing staff followed up with caring phone calls to help the patient and his family make life-style adjustments to normalcy. The author hopes that his distinctive nursing experience can be useful as a reference for the clinical care of lung cancer patients undergoing the initial stage of concurrent chemotherapy and radiation therapy treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lung%20cancer" title="lung cancer">lung cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=initiate%20diagnosis" title=" initiate diagnosis"> initiate diagnosis</a>, <a href="https://publications.waset.org/abstracts/search?q=concurrent%20chemotherapy%20and%20radiation%20therapy" title=" concurrent chemotherapy and radiation therapy"> concurrent chemotherapy and radiation therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=nursing%20care" title=" nursing care"> nursing care</a> </p> <a href="https://publications.waset.org/abstracts/101398/nursing-experience-for-a-lung-cancer-patient-undergoing-first-time-concurrent-chemotherapy-and-radiation-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101398.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">141</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3223</span> Design of RF Generator and Its Testing in Heating of Nickel Ferrite Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20Suman">D. Suman</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Venkateshwara%20Rao"> M. Venkateshwara Rao </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cancer is a disease caused by an uncontrolled division of abnormal cells in a part of the body, which is affecting millions of people leading to death. Even though there have been tremendous developments taken place over the last few decades the effective therapy for cancer is still not a reality. The existing techniques of cancer therapy are chemotherapy and radio therapy which are having their limitations in terms of the side effects, patient discomfort, radiation hazards and the localization of treatment. This paper describes a novel method for cancer therapy by using RF-hyperthermia application of nanoparticles. We have synthesized ferromagnetic nanoparticles and characterized by using XRD and TEM. These nanoparticles after the biocompatibility studies will be injected in to the body with a suitable tracer element having affinity to the specific tumor site. When RF energy is applied to the nanoparticles at the tumor site it produces heat of excess room temperature and nearly 41-45°C is sufficient to kill the tumor cells. We have designed a RF source generator provided with a temperature feedback controller to control the radiation induced temperature of the tumor site. The temperature control is achieved through a negative feedback mechanism of the thermocouple and a relay connected to the power source of the RF generator. This method has advantages in terms of its effect like localized therapy, less radiation, and no side effects. It has several challenges in designing the RF source provided with coils suitable for the tumour site, biocompatibility of the nanomaterials, cooling system design for the RF coil. If we can overcome these challenges this method will be a huge benefit for the society. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hyperthermia" title="hyperthermia">hyperthermia</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer%20therapy" title=" cancer therapy"> cancer therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=RF%20source%20generator" title=" RF source generator"> RF source generator</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title=" nanoparticles"> nanoparticles</a> </p> <a href="https://publications.waset.org/abstracts/14730/design-of-rf-generator-and-its-testing-in-heating-of-nickel-ferrite-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14730.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">460</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3222</span> Efficacy of Topical Ectoin Therapy for Acute Radiodermatitis Associated with Breast Cancer Radiotherapy: A Randomized Controlled Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nagwa%20E.%20Abd%20Elazim">Nagwa E. Abd Elazim</a>, <a href="https://publications.waset.org/abstracts/search?q=Maha%20S.%20El-naggar"> Maha S. El-naggar</a>, <a href="https://publications.waset.org/abstracts/search?q=Rania%20H.%20Mohamed"> Rania H. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Sara%20M.%20Awad"> Sara M. Awad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Radiodermatitis is a common side effect of radiation therapy for breast cancer. However, there is no current consensus about effective standard therapy for the prevention and management of radiation dermatitis. Topical ectoine has demonstrated efficacy in the treatment of atopic dermatitis owing to its anti-inflammatory activity. Objective: To evaluate the efficacy of topical ectoine in comparison to traditional topical dexpanthenol treatment in the management of acute radiodermatitis in breast cancer patients undergoing adjuvant radiotherapy. Methods: Fifty patients were randomized to use either dexpanthenol 0.5% cream (25 patients), or ectoin 7% cream (25 patients), applied twice daily to the irradiated area during the radiation period and continued for 2 weeks after cessation of radiotherapy. Assessment of radiation skin toxicity using Common Terminology Criteria of Adverse Events (CTCAE) v4.0, radiation-associated symptoms, and adverse events were undertaken weekly during radiotherapy and 2 weeks after the end of radiotherapy. Results: Topical ectoine showed some clinical benefit over dexpanthenol, as shown by delayed time to onset (at week 3 versus week 2, respectively) and larger number of patients who reached grade 0 at the end of treatment (64% vs. 48%, respectively). The clinical symptoms of pain (p = 0.003) and itching (p = 0.001) attributable to radiation were less pronounced with ectoine than with dexpanthenol. Burning and hyperpigmentation were the most common side effects with ectoine. However, no significant difference between dexpanthenol and ectoine treatments was found in any of the side effects (p = 0.1). Conclusion: Ectoin was overall more effective in improving radiation dermatitis than topical dexpanthenol in breast cancer patients. Ectoin could be proposed as a preventive or curative treatment for patients undergoing postoperative irradiation for breast cancer. Further clinical studies with a larger number of patients are recommended for the confirmation of these preliminary results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=breast%20cancer" title="breast cancer">breast cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=dexapanthenol" title=" dexapanthenol"> dexapanthenol</a>, <a href="https://publications.waset.org/abstracts/search?q=ectoin" title=" ectoin"> ectoin</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20dermatitis" title=" radiation dermatitis"> radiation dermatitis</a> </p> <a href="https://publications.waset.org/abstracts/120008/efficacy-of-topical-ectoin-therapy-for-acute-radiodermatitis-associated-with-breast-cancer-radiotherapy-a-randomized-controlled-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120008.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3221</span> A Study of The Factors Predicting Radiation Exposure to Contacts of Saudi Patients Treated With Low-Dose Radioactive Iodine (I-131)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khalid%20A.%20Salman">Khalid A. Salman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shereen%20Wagih"> Shereen Wagih</a>, <a href="https://publications.waset.org/abstracts/search?q=Tariq%20Munshi"> Tariq Munshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Musaed%20Almalki"> Musaed Almalki</a>, <a href="https://publications.waset.org/abstracts/search?q=Safwan%20Zatari"> Safwan Zatari</a>, <a href="https://publications.waset.org/abstracts/search?q=Zahid%20Khan"> Zahid Khan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aim: To measure exposure levels to family members and caregivers of Saudi patients treated with low dose I131 therapy, and household radiation exposure rate to predict different factors that can affect radiation exposure. Patients and methods: All adult self dependent patients with hyperthyroidism or cancer thyroid referred for low dose radioactive I131 therapy on outpatient basis are included. Radiation protection procedures are given to the participant and family members in details. TLD’s were dispensed to each participant in sufficient quantity for his/her family members living in the household. TLD’s are collected at fifth days post-dispense from patients who agreed to have a home visit during which the household is inspected and level of radiation contamination of surfaces was measured. Results: Thirty-two patients were enrolled in the current study, with a mean age of 43.1± 17.1 years Out of them 25 patients (78%) are females. I131 therapy was given in twenty patients (63%) for cancer thyroid of and for toxic goiter in the remaining twelve patients (37%), with an overall mean I131 dose of 24.1 ± 7.5mCi that is relatively higher in the former. The overall number of household family members and helpers of patients are 139, out of them77 are females (55.4%) & 62 are males (44.6%) with a mean age of 29.8± 17.6. The mean period of contact with the patient is 7.6 ±5.6hours. The cumulative radiation exposure shows that radiation exposure to all family members is below the exposure constraint (1mSv), with a range of 109 to 503uSv, and a mean value of 220.9±91 uSv. Numerical data shows a little higher exposure rate for family members of those who receive higher dose of I131 (patients with thyroid cancer) and household members who spent longer time with the patient, yet, the difference is statistically insignificant (P>0.05). Besides, no significant correlation was found between the degree of cumulative exposure of the family members to their gender, age, socioeconomic standard, educational level and residential factors. In the 21 home visits all data from bedrooms, reception areas and kitchens are below hazardous limits (0.5uSv/h) apart from bathrooms that give a slightly higher reading of 0.57±0.39 uSv/h in those with cancer thyroid who receive a higher radiation dose. A statistically significant difference was found between radiation exposure rate in bathrooms used by the patient versus those used by family members only, with a mean value of exposure rate of 0.701±0.21 uSv/h and 0.17±0.82 uSv/h respectively, with a p-value of 0.018 (<0.05). Conclusion: Family members of patients treated with low dose I131 on outpatient basis have a good compliance to radiation protection instruction if given properly with a cumulative radiation exposure rate evidently beyond the radiation exposure constraints of 1 mSv. Given I131 dose, hours spent with the patient, age, gender, socioeconomic standard, educational level and residential factors have no significant correlation with the cumulative radiation exposure. The patient bathroom exhibits more radiation exposure rate, needing more strict instructions for patient bathroom use and health hygiene. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=family%20members" title="family members">family members</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20exposure" title=" radiation exposure"> radiation exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=radioactive%20iodine%20therapy" title=" radioactive iodine therapy"> radioactive iodine therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20safety" title=" radiation safety"> radiation safety</a> </p> <a href="https://publications.waset.org/abstracts/55372/a-study-of-the-factors-predicting-radiation-exposure-to-contacts-of-saudi-patients-treated-with-low-dose-radioactive-iodine-i-131" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55372.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">276</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3220</span> Radiation Risks for Nurses: The Unrecognized Consequences of ERCP Procedures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ava%20Zarif%20Sanayei">Ava Zarif Sanayei</a>, <a href="https://publications.waset.org/abstracts/search?q=Sedigheh%20Sina"> Sedigheh Sina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Despite the advancement of radiation-free interventions in the gastrointestinal and hepatobiliary fields, endoscopy and endoscopic retrograde cholangiopancreatography (ERCP) remain indispensable procedures that necessitate radiation exposure. ERCP, in particular, relies heavily on radiation-guided imaging to ensure precise delivery of therapy. Meanwhile, interventional radiology (IR) procedures also utilize imaging modalities like X-rays and CT scans to guide therapy, often under local anesthesia via small needle insertion. However, the complexity of these procedures raises concerns about radiation exposure to healthcare professionals, including nurses, who play a crucial role in these interventions. This study aims to assess the radiation exposure to the hands and fingers of nurses 1 and 2, who are directly involved in ERCP procedures utilizing (TLD-100) dosimeters at the Gastrointestinal Endoscopy department of a clinic in Shiraz, Iran. The dosimeters were initially calibrated using various phantoms and then a group was prepared and used over a two-month period. For personal equivalent dose measurement, two TLD chips were mounted on a finger ring to monitor exposure to the hands and fingers. Upon completion of the monitoring period, the TLDs were analyzed using a TLD reader, showing that Nurse 1 received an equivalent dose of 298.26 µSv and Nurse 2 received an equivalent dose of 195.39 µSv. The investigation revealed that the total radiation exposure to the nurses did not exceed the annual limit for occupational exposure. Nevertheless, it is essential to prioritize radiation protection measures to prevent potential harm. The study showed that positioning staff members and placing two nurses in a specific location contributed to somehow equal doses. To reduce exposure further, we suggest providing education and training on radiation safety principles, particularly for technologists. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dose%20measurement" title="dose measurement">dose measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=ERCP" title=" ERCP"> ERCP</a>, <a href="https://publications.waset.org/abstracts/search?q=interventional%20radiology" title=" interventional radiology"> interventional radiology</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20imaging" title=" medical imaging"> medical imaging</a> </p> <a href="https://publications.waset.org/abstracts/187349/radiation-risks-for-nurses-the-unrecognized-consequences-of-ercp-procedures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187349.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">34</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3219</span> Optical Properties of N-(Hydroxymethyl) Acrylamide Polymer Gel Dosimeters for Radiation Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khalid%20A.%20Rabaeh">Khalid A. Rabaeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Belal%20Moftah"> Belal Moftah</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20A.%20Basfar"> Ahmed A. Basfar</a>, <a href="https://publications.waset.org/abstracts/search?q=Akram%20A.%20Almousa"> Akram A. Almousa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Polymer gel dosimeters are tissue equivalent martial that fabricated from radiation sensitive chemicals which, upon irradiation, polymerize as a function of absorbed radiation dose. Polymer gel dosimeters can uniquely record the radiation dose distribution in three-dimensions (3D). A novel composition of normoxic polymer gel dosimeters based on radiation-induced polymerization of N-(Hydroxymethyl)acrylamide (NHMA) is introduced in this study for radiotherapy treatment planning. The dosimeters were irradiated by 10 MV photon beam of a medical linear accelerator at a constant dose rate of 600 cGy/min with doses up to 30 Gy. The polymerization degree is directly proportional to absorbed dose received by the polymer gel. UV/Vis spectrophotometer was used to investigate the degree of white color of irradiated NHMA gel which is associated to the degree of polymerization of polymer gel dosimeters. The absorbance increases with absorbed dose for all gel dosimeters in the dose range between 0 and 30 Gy. Dose rate , energy of radiation and the stability of the polymerization after irradiation were investigated. No appreciable effects of these parameters on the performance of the novel gel dosimeters were observed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dosimeter" title="dosimeter">dosimeter</a>, <a href="https://publications.waset.org/abstracts/search?q=gel" title=" gel"> gel</a>, <a href="https://publications.waset.org/abstracts/search?q=spectrophotometer" title=" spectrophotometer"> spectrophotometer</a>, <a href="https://publications.waset.org/abstracts/search?q=N-%28Hydroxymethyl%29acrylamide" title=" N-(Hydroxymethyl)acrylamide "> N-(Hydroxymethyl)acrylamide </a> </p> <a href="https://publications.waset.org/abstracts/34646/optical-properties-of-n-hydroxymethyl-acrylamide-polymer-gel-dosimeters-for-radiation-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34646.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">469</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3218</span> Calculation of Organs Radiation Dose in Cervical Carcinoma External Irradiation Beam Using Day’s Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yousif%20M.%20Yousif%20Abdallah">Yousif M. Yousif Abdallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20E.%20Gar-Elnabi"> Mohamed E. Gar-Elnabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdoelrahman%20H.%20A.%20Bakary"> Abdoelrahman H. A. Bakary</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20M.%20H.%20Eltoum"> Alaa M. H. Eltoum</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelazeem%20K.%20M.%20Ali"> Abdelazeem K. M. Ali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study was established to measure the amount of radiation outside the treatment field in external beam radiation therapy using day method of dose calculation, the data was collected from 89 patients of cervical carcinoma in order to determine if the dose outside side the irradiation treatment field for spleen, liver, both kidneys, small bowel, large colon, skin within the acceptable limit or not. The cervical field included mainly 4 organs which are bladder, rectum part of small bowel and hip joint these organ received mean dose of (4781.987±281.321), (4736.91±331.8), (4647.64±387.1) and (4745.91±321.11) respectively. The mean dose received by outfield organs was (77.69±15.24cGy) to large colon, (93.079±12.31cGy) to right kidney (80.688±12.644cGy) to skin, (155.86±17.69cGy) to small bowel. This was more significant value noted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiation%20dose" title="radiation dose">radiation dose</a>, <a href="https://publications.waset.org/abstracts/search?q=cervical%20carcinoma" title=" cervical carcinoma"> cervical carcinoma</a>, <a href="https://publications.waset.org/abstracts/search?q=day%E2%80%99s%20methods" title=" day’s methods"> day’s methods</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20medicine" title=" radiation medicine"> radiation medicine</a> </p> <a href="https://publications.waset.org/abstracts/6291/calculation-of-organs-radiation-dose-in-cervical-carcinoma-external-irradiation-beam-using-days-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6291.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">419</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3217</span> Status of Radiation Protection at Radiation Oncology, BPKM Cancer Hospital, Nepal</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Surendra%20B.%20Chand">Surendra B. Chand</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20P.%20Chaurasia"> P. P. Chaurasia</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20P.%20%20Adhikari"> M. P. Adhikari</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20N.%20Yadav"> R. N. Yadav</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: The objective of this work was to evaluate all the safety procedures toward the radiation protection for workers in the radiation oncology department. Materials and Methods: The annual thermoluminescent dosimeters (TLDs) reports for five years of the staffs were evaluated, radiation surveys were done in the control consoles, radiotherapy machines room and waiting areas of all machines using Aloka survey meter. Results: The five years TLD reports shows that the whole body dose of the individual staffs is found within the annual dose limit except the accidental exposures. Radiation exposures in the working areas are also safe limits. Conclusion: The radiation safety practices for radiation protection are satisfactory and the radiation workers of the departments are found working within the safe limit. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiation%20protection" title="radiation protection">radiation protection</a>, <a href="https://publications.waset.org/abstracts/search?q=safety" title=" safety"> safety</a>, <a href="https://publications.waset.org/abstracts/search?q=ICRP" title=" ICRP"> ICRP</a>, <a href="https://publications.waset.org/abstracts/search?q=dose%20limits" title=" dose limits"> dose limits</a>, <a href="https://publications.waset.org/abstracts/search?q=TLD" title=" TLD"> TLD</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20devices" title=" radiation devices "> radiation devices </a> </p> <a href="https://publications.waset.org/abstracts/2538/status-of-radiation-protection-at-radiation-oncology-bpkm-cancer-hospital-nepal" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2538.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">570</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3216</span> The Analysis of Solar Radiation Exergy in Hakkari</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Yildizhan">Hasan Yildizhan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> According to the Solar Energy Potential Atlas (GEPA) prepared by Turkish Ministry of Energy, Hakkari is ranked first in terms of sunshine duration and it is ranked eighth in terms of solar radiation energy. Accordingly, Hakkari has a rich potential of investment with regard to solar radiation energy. The part of the solar radiation energy arriving on the surface of the earth which is transposable to useful work is determined by means of exergy analysis. In this study, the radiation exergy values for Hakkari have been calculated and evaluated by making use of the monthly average solar radiation energy and temperature values measured by General Directorate of State Meteorology. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20radiation%20exergy" title="solar radiation exergy">solar radiation exergy</a>, <a href="https://publications.waset.org/abstracts/search?q=Hakkari" title=" Hakkari"> Hakkari</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20energy%20potential" title=" solar energy potential"> solar energy potential</a>, <a href="https://publications.waset.org/abstracts/search?q=Turkey" title=" Turkey"> Turkey</a> </p> <a href="https://publications.waset.org/abstracts/28097/the-analysis-of-solar-radiation-exergy-in-hakkari" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28097.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">710</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3215</span> Reduction of Physician's Radiation Dose during Cardiac Catheterization Procedures Using Lead-Free Sterile Radiation Shields</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20O.%20Diab">Mohammad O. Diab</a>, <a href="https://publications.waset.org/abstracts/search?q=Sahera%20A.%20Saleh"> Sahera A. Saleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustapha%20M.%20Dichari"> Mustapha M. Dichari</a>, <a href="https://publications.waset.org/abstracts/search?q=Nijez%20Aloulou"> Nijez Aloulou</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20Hamoui"> Omar Hamoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Feras%20Chehade"> Feras Chehade</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study sought to evaluate the efficiency of lead-free sterile radiation shield (Radionex) in the reduction of physician's exposure dose during interventional cardiology procedures. Cardiac catheterization procedures are often associated with high radiation doses and high levels of secondary radiation emitted by the patient's body. This study compares physician exposure dose rate during cardiac catheterization procedures done through the femoral artery with sterile radiation shielding to same procedures made without the shielding. The mean operator radiation dose rate without using the shield was found to be 18.4µSv/min compared to a mean dose rate of 5.1 µSv/min when using the shield, rendering a reduction of 72.5% of radiation received by the physician. Sterile radiation shielding is consequently an effective addition to a cardiac catheterization lab radiation protection system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cardiac%20catheterization" title="cardiac catheterization">cardiac catheterization</a>, <a href="https://publications.waset.org/abstracts/search?q=physician%20exposure%20dose" title=" physician exposure dose"> physician exposure dose</a>, <a href="https://publications.waset.org/abstracts/search?q=sterile%20radiation%20shielding" title=" sterile radiation shielding"> sterile radiation shielding</a>, <a href="https://publications.waset.org/abstracts/search?q=lead-free%20sterile%20radiation%20shields" title=" lead-free sterile radiation shields"> lead-free sterile radiation shields</a> </p> <a href="https://publications.waset.org/abstracts/23700/reduction-of-physicians-radiation-dose-during-cardiac-catheterization-procedures-using-lead-free-sterile-radiation-shields" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23700.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">513</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3214</span> Multifunctional Bismuth-Based Nanoparticles as Theranostic Agent for Imaging and Radiation Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Azimeh%20Rajaee">Azimeh Rajaee</a>, <a href="https://publications.waset.org/abstracts/search?q=Lingyun%20Zhao"> Lingyun Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Shi%20Wang"> Shi Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yaqiang%20Liu"> Yaqiang Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years many studies have been focused on bismuth-based nanoparticles as radiosensitizer and contrast agent in radiation therapy and imaging due to the high atomic number (Z = 82), high photoelectric absorption, low cost, and low toxicity. This study aims to introduce a new multifunctional bismuth-based nanoparticle as a theranostic agent for radiotherapy, computed tomography (CT) and magnetic resonance imaging (MRI). We synthesized bismuth ferrite (BFO, BiFeO3) nanoparticles by sol-gel method and surface of the nanoparticles were modified by Polyethylene glycol (PEG). After proved biocompatibility of the nanoparticles, the ability of them as contract agent in Computed tomography (CT) and magnetic resonance imaging (MRI) was investigated. The relaxation time rate (R2) in MRI and Hounsfield unit (HU) in CT imaging were increased with the concentration of the nanoparticles. Moreover, the effect of nanoparticles on dose enhancement in low energy was investigated by clonogenic assay. According to clonogenic assay, sensitizer enhancement ratios (SERs) were obtained as 1.35 and 1.76 for nanoparticle concentrations of 0.05 mg/ml and 0.1 mg/ml, respectively. In conclusion, our experimental results demonstrate that the multifunctional nanoparticles have the ability to employ as multimodal imaging and therapy to enhance theranostic efficacy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=molecular%20imaging" title="molecular imaging">molecular imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=nanomedicine" title=" nanomedicine"> nanomedicine</a>, <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title=" radiotherapy"> radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=theranostics" title=" theranostics"> theranostics</a> </p> <a href="https://publications.waset.org/abstracts/95005/multifunctional-bismuth-based-nanoparticles-as-theranostic-agent-for-imaging-and-radiation-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95005.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">317</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3213</span> Investigation of Threshold Voltage Shift in Gamma Irradiated N-Channel and P-Channel MOS Transistors of CD4007</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Boorboor">S. Boorboor</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20H.%20Feghhi"> S. A. H. Feghhi</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Jafari"> H. Jafari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ionizing radiations cause different kinds of damages in electronic components. MOSFETs, most common transistors in today’s digital and analog circuits, are severely sensitive to TID damage. In this work, the threshold voltage shift of CD4007 device, which is an integrated circuit including P-channel and N-channel MOS transistors, was investigated for low dose gamma irradiation under different gate bias voltages. We used linear extrapolation method to extract threshold voltage from I<sub>D</sub>-V<sub>G</sub> characteristic curve. The results showed that the threshold voltage shift was approximately 27.5 mV/Gy for N-channel and 3.5 mV/Gy for P-channel transistors at the gate bias of |9 V| after irradiation by Co-60 gamma ray source. Although the sensitivity of the devices under test were strongly dependent to biasing condition and transistor type, the threshold voltage shifted linearly versus accumulated dose in all cases. The overall results show that the application of CD4007 as an electronic buffer in a radiation therapy system is limited by TID damage. However, this integrated circuit can be used as a cheap and sensitive radiation dosimeter for accumulated dose measurement in radiation therapy systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=threshold%20voltage%20shift" title="threshold voltage shift">threshold voltage shift</a>, <a href="https://publications.waset.org/abstracts/search?q=MOS%20transistor" title=" MOS transistor"> MOS transistor</a>, <a href="https://publications.waset.org/abstracts/search?q=linear%20extrapolation" title=" linear extrapolation"> linear extrapolation</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma%20irradiation" title=" gamma irradiation"> gamma irradiation</a> </p> <a href="https://publications.waset.org/abstracts/55355/investigation-of-threshold-voltage-shift-in-gamma-irradiated-n-channel-and-p-channel-mos-transistors-of-cd4007" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55355.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">283</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3212</span> Solar Radiation Studies for Islamabad, Pakistan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sidra%20A.%20Shaikh">Sidra A. Shaikh</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Ahmed"> M. A. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20W.%20Akhtar"> M. W. Akhtar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Global and diffuse solar radiation studies have been carried out for Islamabad (Lat: 330 43’ N, Long: 370 71’) to access the solar potential of the area using sunshine hour data. A detailed analysis of global solar radiation values measured using several methods is presented. These values are then compared with the NASA SSE model. The variation in direct and diffuse components of solar radiation is observed in summer and winter months for Islamabad along with the clearness index KT. The diffuse solar radiation is found maximum in the month of July. Direct and beam radiation is found to be high in the month of April to June. From the results it appears that with the exception of monsoon months, July and August, solar radiation for electricity generation can be utilized very efficiently throughout the year. Finally, the mean bias error (MBE), root mean square error (RMSE) and mean percent error (MPE) for global solar radiation are also presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20potential" title="solar potential">solar potential</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20and%20diffuse%20solar%20radiation" title=" global and diffuse solar radiation"> global and diffuse solar radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=Islamabad" title=" Islamabad"> Islamabad</a>, <a href="https://publications.waset.org/abstracts/search?q=errors" title=" errors"> errors</a> </p> <a href="https://publications.waset.org/abstracts/3867/solar-radiation-studies-for-islamabad-pakistan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3867.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">437</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3211</span> Therapeutic Effects of Toll Like Receptor 9 Ligand CpG-ODN on Radiation Injury</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jianming%20Cai">Jianming Cai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Exposure to ionizing radiation causes severe damage to human body and an safe and effective radioprotector is urgently required for alleviating radiation damage. In 2008, flagellin, an agonist of TLR5, was found to exert radioprotective effects on radiation injury through activating NF-kB signaling pathway. From then, the radioprotective effects of TLR ligands has shed new lights on radiation protection. CpG-ODN is an unmethylated oligonucleotide which activates TLR9 signaling pathway. In this study, we demonstrated that CpG-ODN has therapeutic effects on radiation injuries induced by γ ray and 12C6+ heavy ion particles. Our data showed that CpG-ODN increased the survival rate of mice after whole body irradiation and increased the number of leukocytes as well as the bone marrow cells. CpG-ODN also alleviated radiation damage on intestinal crypt through regulating apoptosis signaling pathway including bcl2, bax, and caspase 3 etc. By using a radiation-induced pulmonary fibrosis model, we found that CpG-ODN could alleviate structural damage, within 20 week after whole–thorax 15Gy irradiation. In this model, Th1/Th2 imbalance induced by irradiation was also reversed by CpG-ODN. We also found that TGFβ-Smad signaling pathway was regulated by CpG-ODN, which accounts for the therapeutic effects of CpG-ODN in radiation-induced pulmonary injury. On another hand, for high LET radiation protection, we investigated protective effects of CpG-ODN against 12C6+ heavy ion irradiation and found that after CpG-ODN treatment, the apoptosis and cell cycle arrest induced by 12C6+ irradiation was reduced. CpG-ODN also reduced the expression of Bax and caspase 3, while increased the level of bcl2. Then we detected the effect of CpG-ODN on heavy ion induced immune dysfunction. Our data showed that CpG-ODN increased the survival rate of mice and also the leukocytes after 12C6+ irradiation. Besides, the structural damage of immune organ such as thymus and spleen was also alleviated by CpG-ODN treatment. In conclusion, we found that TLR9 ligand, CpG-ODN reduced radiation injuries in response to γ ray and 12C6+ heavy ion irradiation. On one hand, CpG-ODN inhibited the activation of apoptosis induced by radiation through regulating bcl2, bax and caspase 3. On another hand, through activating TLR9, CpG-ODN recruit MyD88-IRAK-TRAF6 complex, activating TAK1, IRF5 and NF-kB pathway, and thus alleviates radiation damage. This study provides novel insights into protection and therapy of radiation damages. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=TLR9" title="TLR9">TLR9</a>, <a href="https://publications.waset.org/abstracts/search?q=CpG-ODN" title=" CpG-ODN"> CpG-ODN</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20injury" title=" radiation injury"> radiation injury</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20LET%20radiation" title=" high LET radiation"> high LET radiation</a> </p> <a href="https://publications.waset.org/abstracts/35124/therapeutic-effects-of-toll-like-receptor-9-ligand-cpg-odn-on-radiation-injury" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35124.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">480</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3210</span> Ontology-Driven Generation of Radiation Protection Procedures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chamseddine%20Barki">Chamseddine Barki</a>, <a href="https://publications.waset.org/abstracts/search?q=Salam%20Labidi"> Salam Labidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanen%20Boussi%20Rahmouni"> Hanen Boussi Rahmouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this article, we present the principle and suitable methodology for the design of a medical ontology that highlights the radiological and dosimetric knowledge, applied in diagnostic radiology and radiation-therapy. Our ontology, which we named «Onto.Rap», is the subject of radiation protection in medical and radiology centers by providing a standardized regulatory oversight. Thanks to its added values of knowledge-sharing, reuse and the ease of maintenance, this ontology tends to solve many problems. Of which we name the confusion between radiological procedures a practitioner might face while performing a patient radiological exam. Adding to it, the difficulties they might have in interpreting applicable patient radioprotection standards. Here, the ontology, thanks to its concepts simplification and expressiveness capabilities, can ensure an efficient classification of radiological procedures. It also provides an explicit representation of the relations between the different components of the studied concept. In fact, an ontology based-radioprotection expert system, when used in radiological center, could implement systematic radioprotection best practices during patient exam and a regulatory compliance service auditing afterwards. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=knowledge" title="knowledge">knowledge</a>, <a href="https://publications.waset.org/abstracts/search?q=ontology" title=" ontology"> ontology</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20protection" title=" radiation protection"> radiation protection</a>, <a href="https://publications.waset.org/abstracts/search?q=radiology" title=" radiology"> radiology</a> </p> <a href="https://publications.waset.org/abstracts/60395/ontology-driven-generation-of-radiation-protection-procedures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60395.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">312</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3209</span> Effect of Gamma Radiation on Bromophenol Blue Dyed Films as Dosimeter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Priyanka%20R.%20Oberoi">Priyanka R. Oberoi</a>, <a href="https://publications.waset.org/abstracts/search?q=Chandra%20B.%20Maurya"> Chandra B. Maurya</a>, <a href="https://publications.waset.org/abstracts/search?q=Prakash%20A.%20Mahanwar"> Prakash A. Mahanwar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ionizing radiation can cause a drastic change in the physical and chemical properties of the material exposed. Numerous medical devices are sterilized by ionizing radiation. In the current research paper, an attempt was made to develop precise and inexpensive polymeric film dosimeter which can be used for controlling radiation dosage. Polymeric film containing (pH sensitive dye) indicator dye Bromophenol blue (BPB) was casted to check the effect of Gamma radiation on its optical and physical properties. The film was exposed to gamma radiation at 4 kGy/hr in the range of 0 to 300 kGy at an interval of 50 kGy. Release of vinyl acetate from an emulsion on high radiation reacts with the BPB fading the color of the film from blue to light blue and then finally colorless, indicating a change in pH from basic to acidic form. The change was characterized by using CIE l*a*b*, ultra-violet spectroscopy and FT-IR respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bromophenol%20blue" title="bromophenol blue">bromophenol blue</a>, <a href="https://publications.waset.org/abstracts/search?q=dosimeter" title=" dosimeter"> dosimeter</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma%20radiation" title=" gamma radiation"> gamma radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer" title=" polymer"> polymer</a> </p> <a href="https://publications.waset.org/abstracts/55840/effect-of-gamma-radiation-on-bromophenol-blue-dyed-films-as-dosimeter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55840.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">290</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3208</span> Estimation of Global and Diffuse Solar Radiation Studies of Islamabad, Capital City of Pakistan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Akhlaque%20Ahmed">M. Akhlaque Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Maliha%20Afshan"> Maliha Afshan</a>, <a href="https://publications.waset.org/abstracts/search?q=Adeel%20Tahir"> Adeel Tahir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Global and diffuse solar radiation studies have been carried out for the Capital city of Pakistan, Islamabad ( latitude 330 43’N and Longitude 370 71’E) to assess the solar potential of the area. The global and diffuse solar radiation were carried out using sunshine hour data for the above-mentioned area. Monthly total solar radiation is calculated through regression constants a and b through declination angle of the sun and sunshine hours and KT that is cloudiness index are used to calculate the diffuse solar radiation. Result obtained shows variation in the direct and diffuse component of solar radiation in summer and winter months for Islamabad. Diffuse solar radiation was found maximum in July, i.e., 32% whereas direct or beam radiation was found to be high in April to June, i.e., 73%. During July, August, and December, the sky was found cloudy. From the result, it appears that with the exception of monsoon month July and August the solar energy can be utilized very efficiently throughout the year in Islamabad. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=global%20radiation" title="global radiation">global radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=Islamabad" title=" Islamabad"> Islamabad</a>, <a href="https://publications.waset.org/abstracts/search?q=diffuse%20radiation" title=" diffuse radiation"> diffuse radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=sky%20condition" title=" sky condition"> sky condition</a>, <a href="https://publications.waset.org/abstracts/search?q=sunshine%20hour" title=" sunshine hour"> sunshine hour</a> </p> <a href="https://publications.waset.org/abstracts/108989/estimation-of-global-and-diffuse-solar-radiation-studies-of-islamabad-capital-city-of-pakistan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108989.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">168</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3207</span> Radiation Hardness Materials Article Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Abou%20El-Azm">S. Abou El-Azm</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20Kruchonak"> U. Kruchonak</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Gostkin"> M. Gostkin</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Guskov"> A. Guskov</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zhemchugov"> A. Zhemchugov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Semiconductor detectors are widely used in nuclear physics and high-energy physics experiments. The application of semiconductor detectors could be limited by their ultimate radiation resistance. The increase of radiation defects concentration leads to significant degradation of the working parameters of semiconductor detectors. The investigation of radiation defects properties in order to enhance the radiation hardness of semiconductor detectors is an important task for the successful implementation of a number of nuclear physics experiments; we presented some information about radiation hardness materials like diamond, sapphire and CdTe. Also, the results of measurements I-V characteristics, charge collection efficiency and its dependence on the bias voltage for different doses of high resistivity (GaAs: Cr) and Si at LINAC-200 accelerator and reactor IBR-2 are presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=semiconductor%20detectors" title="semiconductor detectors">semiconductor detectors</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20hardness" title=" radiation hardness"> radiation hardness</a>, <a href="https://publications.waset.org/abstracts/search?q=GaAs" title=" GaAs"> GaAs</a>, <a href="https://publications.waset.org/abstracts/search?q=Si" title=" Si"> Si</a>, <a href="https://publications.waset.org/abstracts/search?q=CCE" title=" CCE"> CCE</a>, <a href="https://publications.waset.org/abstracts/search?q=I-V" title=" I-V"> I-V</a>, <a href="https://publications.waset.org/abstracts/search?q=C-V" title=" C-V"> C-V</a> </p> <a href="https://publications.waset.org/abstracts/146949/radiation-hardness-materials-article-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146949.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">113</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3206</span> Effects of UV-B Radiation on the Growth of Ulva Pertusa Kjellman Seedling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=HengJiang%20Cai">HengJiang Cai</a>, <a href="https://publications.waset.org/abstracts/search?q=RuiJin%20Zhang"> RuiJin Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=JinSong%20Gui"> JinSong Gui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Enhanced UV-B (280-320nm) radiation resulting from ozone depletion was one of the global environmental problems. The effects of enhanced UV-B radiation on marine macro-algae were exposed to be the greatest in shallow intertidal environments because the macro-alga was often at or above the water during low tide. Ulva pertusa Kjellman was belonged to Chlorophyta (Phylum), Ulvales (Order), Ulvaceae (Family) which was widely distributed in the western Pacific coast, and the resources were extremely rich in China. Therefore, the effects of UV-B radiation on the growth of Ulva pertusa seedling were studied in this research. Ulva pertusa seedling appearances were mainly characterized by rod shapes and tadpole shapes. The percentage of rod shapes was 90.68%±2.50%. UV-B radiation could inhibit the growth of Ulva pertusa seedling, and the growth inhibition was more significant with the increased doses of UV-B radiation treatment. The relative inhibition rates of Ulva pertusa seedling length were16.11%, 24.98%and 39.04% respectively on the 30th day at different doses (30.96, 61.92 and 123.84 Jm-2d-1) of UV-B radiation. Ulva pertusa seedling had emerged death under UV-B radiation, and the death rates were increased with the increased doses of UV-B radiation treatment. Physiology and biochemistry of Ulva pertusa seedling could be affected by UV-B radiation treatment. The SOD (superoxide dismutase) activity was increased at low-dose UV-B radiation (30.96 Jm-2d-1), while was decreased at high-dose UV-B radiation (61.92 and 123.84 Jm-2d-1). UV-B radiation could inhibit CAT (catalase) activity all the while. It speculated that the reasons for growth inhibition and death of Ulva pertusa seedling were excess ROS (reactive oxygen species), which produced by UV-B radiation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=growth" title="growth">growth</a>, <a href="https://publications.waset.org/abstracts/search?q=physiology%20and%20biochemistry" title=" physiology and biochemistry"> physiology and biochemistry</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulva%20pertusa%20Kjellman" title=" Ulva pertusa Kjellman"> Ulva pertusa Kjellman</a>, <a href="https://publications.waset.org/abstracts/search?q=UV-B%20radiation" title=" UV-B radiation"> UV-B radiation</a> </p> <a href="https://publications.waset.org/abstracts/47332/effects-of-uv-b-radiation-on-the-growth-of-ulva-pertusa-kjellman-seedling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47332.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">281</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3205</span> Clinical Efficacy of Localized Salvage Prostate Cancer Reirradiation with Proton Scanning Beam Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Charles%20Shang">Charles Shang</a>, <a href="https://publications.waset.org/abstracts/search?q=Salina%20Ramirez"> Salina Ramirez</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephen%20Shang"> Stephen Shang</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20Estrada"> Maria Estrada</a>, <a href="https://publications.waset.org/abstracts/search?q=Timothy%20R.%20Williams"> Timothy R. Williams</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Purpose: Over the past decade, proton therapy utilizing pencil beam scanning has emerged as a preferred treatment modality in radiation oncology, particularly for prostate cancer. This retrospective study aims to assess the clinical and radiobiological efficacy of proton scanning beam therapy in the treatment of localized salvage prostate cancer, following initial radiation therapy with a different modality. Despite the previously delivered high radiation doses, this investigation explores the potential of proton reirradiation in controlling recurrent prostate cancer and detrimental quality of life side effects. Methods and Materials: A retrospective analysis was conducted on 45 cases of locally recurrent prostate cancer that underwent salvage proton reirradiation. Patients were followed for 24.6 ± 13.1 months post-treatment. These patients had experienced an average remission of 8.5 ± 7.9 years after definitive radiotherapy for localized prostate cancer (n=41) or post-prostatectomy (n=4), followed by rising PSA levels. Recurrent disease was confirmed by FDG-PET (n=31), PSMA-PET (n=10), or positive local biopsy (n=4). Gross tumor volume (GTV) was delineated based on PET and MR imaging, with the planning target volume (PTV) expanding to an average of 10.9 cm³. Patients received proton reirradiation using two oblique coplanar beams, delivering total doses ranging from 30.06 to 60.00 GyE in 17–30 fractions. All treatments were administered using the ProBeam Compact system with CT image guidance. The International Prostate Symptom Scores (IPSS) and prostate-specific antigen (PSA) levels were evaluated to assess treatment-related toxicity and tumor control. Results and Discussions: In this cohort (mean age: 76.7 ± 7.3 years), 60% (27/45) of patients showed sustained reductions in PSA levels post-treatment, while 36% (16/45) experienced a PSA decline of more than 0.8 ng/mL. Additionally, 73% (33/45) of patients exhibited an initial PSA reduction, though some showed later PSA increases, indicating the potential presence of undetected metastatic lesions. The median post-retreatment IPSS score was 4, significantly lower than scores reported in other treatment studies. Overall, 69% of patients reported mild urinary symptoms, with 96% (43/45) experiencing mild to moderate symptoms. Three patients experienced grade I or II proctitis, while one patient reported grade III proctitis. These findings suggest that regional organs, including the urethra, bladder, and rectum, demonstrate significant radiobiological recovery from prior radiation exposure, enabling tolerance to additional proton scanning beam therapy. Conclusions: This retrospective analysis of 45 patients with recurrent localized prostate cancer treated with salvage proton reirradiation demonstrates favorable outcomes, with a median follow-up of two years. The post-retreatment IPSS scores were comparable to those reported in follow-up studies of initial radiation therapy treatments, indicating stable or improved urinary symptoms compared to the end of initial treatment. These results highlight the efficacy of proton scanning beam therapy in providing effective salvage treatment while minimizing adverse effects on critical organs. The findings also enhance the understanding of radiobiological responses to reirradiation and support proton therapy as a viable option for patients with recurrent localized prostate cancer following previous definitive radiation therapy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=prostate%20salvage%20radiotherapy" title="prostate salvage radiotherapy">prostate salvage radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=proton%20therapy" title=" proton therapy"> proton therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=biological%20radiation%20tolerance" title=" biological radiation tolerance"> biological radiation tolerance</a>, <a href="https://publications.waset.org/abstracts/search?q=radiobiology%20of%20organs" title=" radiobiology of organs"> radiobiology of organs</a> </p> <a href="https://publications.waset.org/abstracts/191367/clinical-efficacy-of-localized-salvage-prostate-cancer-reirradiation-with-proton-scanning-beam-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/191367.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">18</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3204</span> Verification of Dosimetric Commissioning Accuracy of Flattening Filter Free Intensity Modulated Radiation Therapy and Volumetric Modulated Therapy Delivery Using Task Group 119 Guidelines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arunai%20Nambi%20Raj%20N.">Arunai Nambi Raj N.</a>, <a href="https://publications.waset.org/abstracts/search?q=Kaviarasu%20Karunakaran"> Kaviarasu Karunakaran</a>, <a href="https://publications.waset.org/abstracts/search?q=Krishnamurthy%20K."> Krishnamurthy K.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study was to create American Association of Physicist in Medicine (AAPM) Task Group 119 (TG 119) benchmark plans for flattening filter free beam (FFF) deliveries of intensity modulated radiation therapy (IMRT) and volumetric arc therapy (VMAT) in the Eclipse treatment planning system. The planning data were compared with the flattening filter (FF) IMRT & VMAT plan data to verify the dosimetric commissioning accuracy of FFF deliveries. AAPM TG 119 proposed a set of test cases called multi-target, mock prostate, mock head and neck, and C-shape to ascertain the overall accuracy of IMRT planning, measurement, and analysis. We used these test cases to investigate the performance of the Eclipse Treatment planning system for the flattening filter free beam deliveries. For these test cases, we generated two sets of treatment plans, the first plan using 7–9 IMRT fields and a second plan utilizing two arc VMAT technique for both the beam deliveries (6 MV FF, 6MV FFF, 10 MV FF and 10 MV FFF). The planning objectives and dose were set as described in TG 119. The dose prescriptions for multi-target, mock prostate, mock head and neck, and C-shape were taken as 50, 75.6, 50 and 50 Gy, respectively. The point dose (mean dose to the contoured chamber volume) at the specified positions/locations was measured using compact (CC‑13) ion chamber. The composite planar dose and per-field gamma analysis were measured with IMatriXX Evaluation 2D array with OmniPro IMRT Software (version 1.7b). FFF beam deliveries of IMRT and VMAT plans were comparable to flattening filter beam deliveries. Our planning and quality assurance results matched with TG 119 data. AAPM TG 119 test cases are useful to generate FFF benchmark plans. From the obtained data in this study, we conclude that the commissioning of FFF IMRT and FFF VMAT delivery were found within the limits of TG-119 and the performance of the Eclipse treatment planning system for FFF plans were found satisfactorily. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flattening%20filter%20free%20beams" title="flattening filter free beams">flattening filter free beams</a>, <a href="https://publications.waset.org/abstracts/search?q=intensity%20modulated%20radiation%20therapy" title=" intensity modulated radiation therapy"> intensity modulated radiation therapy</a>, <a href="https://publications.waset.org/abstracts/search?q=task%20group%20119" title=" task group 119"> task group 119</a>, <a href="https://publications.waset.org/abstracts/search?q=volumetric%20modulated%20arc%20therapy" title=" volumetric modulated arc therapy"> volumetric modulated arc therapy</a> </p> <a href="https://publications.waset.org/abstracts/106771/verification-of-dosimetric-commissioning-accuracy-of-flattening-filter-free-intensity-modulated-radiation-therapy-and-volumetric-modulated-therapy-delivery-using-task-group-119-guidelines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106771.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">146</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3203</span> Models to Estimate Monthly Mean Daily Global Solar Radiation on a Horizontal Surface in Alexandria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20R.%20Abdelaziz">Ahmed R. Abdelaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=Zaki%20M.%20I.%20Osha"> Zaki M. I. Osha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Solar radiation data are of great significance for solar energy system design. This study aims at developing and calibrating new empirical models for estimating monthly mean daily global solar radiation on a horizontal surface in Alexandria, Egypt. Day length hours, sun height, day number, and declination angle calculated data are used for this purpose. A comparison between measured and calculated values of solar radiation is carried out. It is shown that all the proposed correlations are able to predict the global solar radiation with excellent accuracy in Alexandria. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title="solar energy">solar energy</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20solar%20radiation" title=" global solar radiation"> global solar radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=model" title=" model"> model</a>, <a href="https://publications.waset.org/abstracts/search?q=regression%20coefficient" title=" regression coefficient"> regression coefficient</a> </p> <a href="https://publications.waset.org/abstracts/41004/models-to-estimate-monthly-mean-daily-global-solar-radiation-on-a-horizontal-surface-in-alexandria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41004.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3202</span> Determining the Effectiveness of Radiation Shielding and Safe Time for Radiation Worker by Employing Monitoring of Accumulation Dose in the Operator Room of CT Scan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Risalatul%20Latifah">Risalatul Latifah</a>, <a href="https://publications.waset.org/abstracts/search?q=Bunawas%20Bunawas"> Bunawas Bunawas</a>, <a href="https://publications.waset.org/abstracts/search?q=Lailatul%20Muqmiroh"> Lailatul Muqmiroh</a>, <a href="https://publications.waset.org/abstracts/search?q=Anggraini%20D.%20Sensusiati"> Anggraini D. Sensusiati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Along with the increasing frequency of the use of CT-Scan for radiodiagnostics purposes, it is necessary to study radiation protection. This study examined aspects of radiation protection of workers. This study tried using thermoluminescent dosimeter (TLD) for evaluating radiation shielding and estimating safe time for workers during CT Scan examination. Six TLDs were placed on door, wall, and window inside and outside of the CT Scan room for 1 month. By using TLD monitoring, it could be seen how much radiation was exposed in the operator room. The results showed the effective dose at door, window, and wall was respectively 0.04 mSv, 0.05 mSv, and 0.04 mSv. With these values, it could be evaluated the effectiveness of radiation shielding on doors, glass and walls were respectively 90.6%, 95.5%, and 92.2%. By applying the dose constraint and the estimation of the accumulated dose for one month, radiation workers were still safe to perform the irradiation for 180 patients. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CT%20scan%20room" title="CT scan room">CT scan room</a>, <a href="https://publications.waset.org/abstracts/search?q=TLD" title=" TLD"> TLD</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20worker" title=" radiation worker"> radiation worker</a>, <a href="https://publications.waset.org/abstracts/search?q=dose%20constraint" title=" dose constraint"> dose constraint</a> </p> <a href="https://publications.waset.org/abstracts/63239/determining-the-effectiveness-of-radiation-shielding-and-safe-time-for-radiation-worker-by-employing-monitoring-of-accumulation-dose-in-the-operator-room-of-ct-scan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63239.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">288</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=radiation%20therapy&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=radiation%20therapy&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=radiation%20therapy&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=radiation%20therapy&page=5">5</a></li> <li class="page-item"><a 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