The MLC tongue-and-groove effect on IMRT dose distributions

被引：0

作者：

Deng, J ^{[1
]}

Pawlicki, T ^{[1
]}

Chen, Y ^{[1
]}

Li, JS ^{[1
]}

Jiang, SB ^{[1
]}

Ma, CM ^{[1
]}

机构：

[1] Stanford Univ, Dept Radiat Oncol, Sch Med, Stanford, CA 94305 USA

来源：

PROCEEDINGS OF THE 22ND ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-4 | 2000年 / 22卷

关键词：

MLC; tongue-and-groove effect; EGS4 Monte Carlo; IMRT;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We have investigated the tongue-and-groove effect on the IMRT dose distributions using the EGS4/MCDOSE Monte Carlo code. We have compared the dose distributions computed by MCDOSE using the fluence maps with and without tongue-and-groove effect. Our results showed that, for one intensity modulated treatment field, the tongue-and-groove effect could be seen clearly in the dose distributions. For an IMRT treatment with multiple gantry angles, the! difference between the dose distributions with and without the tongue-and-groove effect was reduced significantly. After considering the setup errors, however, no distinguished discrepancies were found, indicating that, for IMRT treatment planning, the tongue-and-groove effect can be neglected due to its negligible Impact on the overall dose distributions.

引用

页码：2075 / 2078

页数：4

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