Adaptive step size algorithm to increase efficiency of proton macro Monte Carlo dose calculation
نویسندگان
چکیده
منابع مشابه
Macro Monte Carlo for dose calculation of proton beams.
Although the Monte Carlo (MC) method allows accurate dose calculation for proton radiotherapy, its usage is limited due to long computing time. In order to gain efficiency, a new macro MC (MMC) technique for proton dose calculations has been developed. The basic principle of the MMC transport is a local to global MC approach. The local simulations using GEANT4 consist of mono-energetic proton p...
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We implement an adaptive step size method for the Hybrid Monte Carlo algorithm. The adaptive step size is given by solving a symmetric error equation. An integrator with such an adaptive step size is reversible. Although we observe appreciable variations of the step size, the overhead of the method exceeds its benefits. We propose an explanation for this phenomenon.
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PURPOSE Although the Monte Carlo (MC) method allows accurate dose calculation its usage is limited due to long computing time. In order to gain efficiency, a new macro MC (MMC) technique for proton dose calculations in homogeneous materials has been developed. METHODS The macro MC is based on a local to global MC approach. The local simulations using Geant4 consist of mono-energetic proton pe...
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ژورنال
عنوان ژورنال: Radiation Oncology
سال: 2019
ISSN: 1748-717X
DOI: 10.1186/s13014-019-1362-5