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International Journal of Radiation Research، جلد ۱۳، شماره ۴، صفحات ۳۷۹-۳۸۲
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عنوان انگلیسی Determination of room entry times for radiation therapists after routine 15 MV photon treatments
چکیده انگلیسی مقاله Background: Radiation therapy uses high-energy radiation to kill cancer cells. Photoneutron contamination and induced radioactivity of high energy therapeutic photon beams are considered as the main source of occupational exposure to radiation therapists who works with linear accelerators operating above 10 MV. Materials and Methods: The gamma dose rates were measured after termination of different treatment approaches using 15 MV photons and room entry times for each approach was determined. Based on the results of this study, the annual dose of radiation therapists was estimated. Results: The highest dose rate that measured in the treatment room was belonged to 3-field pelvic approach which was equal to 5 ± 1.1 µSv/h. The radiation therapist's room entry times were determined between 3 to 10 minutes and the annual dose was estimated up to 5.9 mSv/y. Conclusion: Although the estimated annual dose is less than the internationally permitted value, the undesirable dose to radiation workers could be reduced through considering recommended room entry times.
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نویسندگان مقاله m نجفی | m. najafi
department of bioengineering and medical physics, shahid beheshti university of medical sciences, p. o. box 14155-6446, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

محمدرضا دیوبند | mohammad reza deevband
department of bioengineering and medical physics, shahid beheshti university of medical sciences, p. o. box 14155-6446, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

علی اکبر یوسفی دیبا | a a yousefi diba
department of radiation oncology, hafte tir hospital, p. o. box 1886718136, tehran, iran


a امین مقدم | a amin moghaddam
department of statistical, tarbiat-modares university, p. o. box 14115-111, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

نشانی اینترنتی http://www.ijrr.com/browse.php?a_code=A-10-1-587&slc_lang=en&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Radiation Biology
نوع مقاله منتشر شده مرور و بررسی کلی
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