Dose calculation accuracy for photon small fields in treatment planning systems with comparison by Monte Carlo simulations

نویسندگان

چکیده

Abstract Purpose: Advanced radiation therapy techniques use small fields in treatment planning and delivery. Small have the advantage of more accurate dose delivery, but with cost some complications dosimetry. Different calculation algorithms imported various systems (TPSs) which each them has different accuracy. Monte Carlo (MC) simulation been reported as one methods for calculating distribution therapy. The aim this study was evaluation TPS against 2 MC codes. Methods: A linac head simulated codes, MCNPX, GATE. Then three (0.5×0.5, 1×1 1.5×1.5 cm ) were also these planned Isogray Monaco TPS. PDDs lateral profiles extracted compared between simulations algorithms. Results: For 0.5×0.5 field mean differences MCNPX 2.28, 4.6, 5.3, 7.4% GATE -0.29, 2.3, 3 5% CCC, superposition, FFT Clarkson respectively. 1.58, 0.6, 1.1 1.4% 0.77, 0.1, 0.6 0.9% 0.82, 0.4, -0.4% 2.38, 2.5, 2.7 1.7% Conclusions: evaluated fields. Mean decreased increase sizes all

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ژورنال

عنوان ژورنال: Polish Journal of Medical Physics and Engineering

سال: 2021

ISSN: ['1898-0309', '1425-4689']

DOI: https://doi.org/10.2478/pjmpe-2021-0022