Extended collimator model for pencil-beam dose calculation in proton radiotherapy

被引：28
作者：
Kanematsu, Nobuyuki
Akagi, Takashi
Takatani, Yasuyuki
Yonai, Shunsuke
Sakamoto, Hidenobu
Yamashita, Haruo
机构：
[1] Natl Inst Radiol Sci, Inage Ku, Chiba 2638555, Japan
[2] Hyogo Ion Beam Med Ctr, Tatsuno, Hyogo 6705165, Japan
[3] Mitsubishi Electr Corp, Hyogo Ku, Kobe, Hyogo 6528555, Japan
[4] Shizuoka Canc Ctr, Shizuoka 4118777, Japan
来源：
PHYSICS IN MEDICINE AND BIOLOGY | 2006年 / 51卷 / 19期
关键词：
D O I：
10.1088/0031-9155/51/19/006
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
We have developed a simple collimator model to improve the accuracy of penumbra behaviour in pencil-beam dose calculation for proton radiotherapy. In this model, transmission of particles through a three-dimensionally extended opening of a collimator is calculated in conjunction with phase-space distribution of the particles. Comparison of the dose distributions calculated using the new three-dimensional collimator model and the conventional two-dimensional model to lateral dose profiles experimentally measured with collimated proton beams showed the superiority of the new model over the conventional one.
引用
收藏
页码：4807 / 4817
页数：11
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