Comparison audit program for selected radiotherapy centers by secondary standard dosimetry laboratory (SSDL) using thermoluminescence dosimeter
- سال انتشار: 1403
- محل انتشار: فصلنامه فیزیک و مهندسی پرتو، دوره: 5، شماره: 2
- کد COI اختصاصی: JR_RPE-5-2_008
- زبان مقاله: انگلیسی
- تعداد مشاهده: 42
نویسندگان
Radiation Application Research School, Nuclear Science and Technology Research Institute, P.O. Box ۳۱۴۸۵-۴۹۸, Karaj, Iran
Atomic Energy Organization of Iran, Secondary Standard Dosimetry Laboratory (SSDL)
Department of Physics, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
Radiation Application Research School, Nuclear Science and Technology Research Institute, P.O. Box ۳۱۴۸۵-۴۹۸, Karaj, Iran
Department of Physics, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
چکیده
The International Atomic Energy Agency (IAEA), sends dosimeters annually to Secondary Standard Dosimetry Laboratories (SSDL) around the world, to calibrate their radiation field. Therefore, they mainly send thermo-luminescent dosimeters as transfer dosimeters to the SSDL laboratories, to be irradiated under the requested conditions and sent back to the IAEA laboratories for reading. In this way, by reading the dosimeters, the uncertainty of the dosimetry carried out by SSDL and, consequently, the calibration of its radiation fields is determined. In this research, with the aim of feasibility of comparative dosimetry program by SSDL laboratory for radiation therapy centers, this program was carried out for a number of centers. In this way, TLD-۷۰۰ thermoluminescence dosimeters were irradiated in the same conditions in the SSDL laboratory and also in the selected centers to a certain amount. After reading and applying the correction coefficients and calibration factors, the obtained results were compared with the measurement results using ion chamber reference dosimeter. In this work the uncertainty of the dosimetry using TLD tablet was less than ۱.۱۲% in comparison to the reference ionization chamber dosimeter and was within the acceptable range of less than ۳%.کلیدواژه ها
Comparison dosimetry, SSDL laboratory, Radiation therapy, TLD-۷۰۰ dosimeterاطلاعات بیشتر در مورد COI
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