کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1884114 1043325 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The comparison of doses measured by radiochromic films and semiconductor detector in a 175 MeV proton beam
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
The comparison of doses measured by radiochromic films and semiconductor detector in a 175 MeV proton beam
چکیده انگلیسی

We wanted to verify the response of radiochromic films in a 175 MeV clinical proton beam used at the Joint Institute for Nuclear Research in Dubna against doses measured using semiconductor detectors and compare the results with published data from other centres. Radiochromic films (RCFs) MD-55 and a Vidar VXR-16 scanner were used. The films were irradiated in an unmodulated proton beam and with a beam modulated with a bolus and a ridge filter. Obtained dose distributions were compared with dose distributions measured with a Si-semiconductor detector.For the unmodulated beam the difference between the RCF and the semiconductor detector was 12% in the Bragg peak top. For the modulated beam the difference inside the spread-out Bragg peak region was 4%. Observed deviations between doses measured with RCF and Si-detector outside the Bragg peak were caused by the inhomogeneity of radiochromic emulsion. In the Bragg peak region the RCF doses were lower than those measured by semiconductors. The results were in agreement with published data from other proton therapy centres.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica Medica - Volume 25, Issue 3, September 2009, Pages 105–110
نویسندگان
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