کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8208986 | 1532079 | 2016 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Monte Carlo based investigations of electron contamination from telecobalt unit head in build up region and its impact on surface dose
ترجمه فارسی عنوان
مونت کارلو تحقیقات مربوط به آلودگی الکترون را از سر واحد تله کبالت در منطقه ساخت و تاثیر آن بر دوز سطحی دارد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
چکیده انگلیسی
A Telecobalt unit has wide range of applications in cancer treatments and is used widely in many countries all around the world. Estimation of surface dose in Cobalt-60 teletherapy machine becomes important since clinically useful photon beam consist of contaminated electrons during the patient treatment. EGSnrc along with the BEAMnrc user code was used to model the Theratron 780E telecobalt unit. Central axis depth dose profiles including surface doses have been estimated for the field sizes of 0Ã0, 6Ã6, 10Ã10, 15Ã15, 20Ã20, 25Ã25, 30Ã30Â cm2 and at Source-to-surface distance (SSD) of 60 and 80Â cm. Surface dose was measured experimentally by the Gafchromic RTQA2 films and are in good agreement with the simulation results. The central axis depth dose data are compared with the data available from the British Journal of Radiology report no. 25. Contribution of contaminated electrons has also been calculated using Monte Carlo simulation by the different parts of the Cobalt-60 head for different field size and SSD's. Moreover, depth dose curve in zero area field size is calculated by extrapolation method and compared with the already published data. They are found in good agreement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 118, December 2016, Pages 175-181
Journal: Applied Radiation and Isotopes - Volume 118, December 2016, Pages 175-181
نویسندگان
A.S. Jagtap, T. Palani Selvam, B.J. Patil, S.T. Chavan, S.N. Pethe, Gauri Kulkarni, S.S. Dahiwale, V.N. Bhoraskar, S.D. Dhole,