کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8242888 1533157 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Uncertainty Estimation in Intensity-Modulated Radiotherapy Absolute Dosimetry Verification
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
Uncertainty Estimation in Intensity-Modulated Radiotherapy Absolute Dosimetry Verification
چکیده انگلیسی
Conclusion: The increase of the reference dose relative standard uncertainty measured with ICs introduced by nonreference conditions when verifying an entire IMRT plan is about 1-1.5%, provided that appropriate small-volume chambers are used. The overall standard uncertainty of the measured IMRT dose amounts to about 2.3%, including the 0.5% of reproducibility and 1.5% of uncertainty associated with the beam calibration factor. Solid state detectors and large-volume chambers are not well suited to IMRT verification dosimetry because of the greater uncertainties. An action level of 5% is appropriate for IMRT verification. Greater discrepancies should lead to a review of the dosimetric procedure, including visual inspection of treatment segments and energy fluence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Radiation Oncology*Biology*Physics - Volume 68, Issue 1, 1 May 2007, Pages 301-310
نویسندگان
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