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Iranian Journal of Medical Physics، جلد ۱۸، شماره ۴، صفحات ۲۸۵-۲۹۲
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عنوان انگلیسی Use of Amorphous Silicon (ASi) Electronic Portal Imaging Devices for Other applications for Linear Accelerator Quality Assurance
چکیده انگلیسی مقاله Introduction: The success of radiation therapy depends critically on the accuracy of patient alignment in treatment position day after day. The primary use for Electronic portal imaging devices (EPIDs) is to monitor patient position during daily radiotherapy sessions. Recently the role of EPIDs has been expanded beyond patient imaging to become a useful tool for radiotherapy dosimetry. Material and Methods: To test another application of linac quality assurance (QA), 10×10 cm2 and 18×18 cm2 images of an open field were obtained. The epidermis was located at a fixed detector distance of 150 cm. Results: Wedge profile and wedge factors with a high level of accuracy demonstrated. The profiles acquired using EPID deviated in shape and magnitude by up to 16% from the ion chamber profiles. The use of EPID for linac QA can be simplified by improving the available software analysis tools, which will increase its efficiency. According to the findings, the EPID aSi500 has the potential to be used as a relative dosimeter, making it a straightforward and efficient tool for daily QA. Conclusion: All EPID measurements were performed using the linear accelerator Varian DMX. Based on the physical characteristics, as an efficient tool, the SLIC-EPID can be used for daily QA.
کلیدواژه‌های انگلیسی مقاله Portal imaging, dosimetric properties, Electronic Portal Imaging Devices (EPID), Radiation Dosimetry
نویسندگان مقاله | Gena Mohamed
Assiut Military Center for Radiotherapy, Assiut, Egypt


| Khaled M. El-Shahat
Faculty of Medicine, Al Azhar University, Egypt


| Mahmoud Salem
Physics Department, Faculty of Science, New Valley University, 72511, El-Kharga, Egypt.


| Atef El-Taher
Physics Department, Faculty of Science, Al Azhar University, Assuit
نشانی اینترنتی https://ijmp.mums.ac.ir/article_15627.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Paper
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