On the efficiency of azimuthal and rotational splitting for Monte Carlo simulation of clinical linear accelerators

被引：17

作者：

Brualla, L. ^{[1
]}

Sauerwein, W. ^{[1
]}

机构：

[1] Univ Klinikum Essen, NCTeam, Strahlenklin, D-45122 Essen, Germany

来源：

RADIATION PHYSICS AND CHEMISTRY | 2010年 / 79卷 / 09期

关键词：

Monte Carlo; Linac; Variance-reduction; Splitting; Radiotherapy; REDUCTION; VARIANCE; PHOTON;

D O I：

10.1016/j.radphyschem.2010.03.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This article presents rotational splitting as a modification to the sampling process of the azimuthal angle used in the variance-reduction technique of azimuthal particle redistribution, with the goal to improve the efficiency of this variance-reduction technique for the Monte Carlo simulation of radiation transport in clinical linear accelerators. Using a constant azimuthal angle, instead of a random one, in the azimuthal particle redistribution technique, increases the efficiency of the simulation of a clinical linear accelerator by about 30% and reduces the latent variance of a 10 x 10 cm(2) phase space by about 40%. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：929 / 932

页数：4

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