临床医学工程2025，Vol.32Issue(3)：229-232,4.DOI:10.3969/j.issn.1674-4659.2025.03.0229
放射治疗计划系统中舌槽建模参数确定的新方法
A New Method for Determining the Modeling Parameters of the Tongue Groove in the Radiotherapy Treatment Planning System
陆健锋1
作者信息
- 1. 江门市中心医院放射治疗中心,广东 江门 529030
- 折叠
摘要
Abstract
Objective Aiming at the clinical problem of 7%～10%dose calculation errors caused by the conventional constant-width tongue-and-groove(TG)model in high-definition multileaf collimator(MLC)scenarios,a modeling method of non-constant width TG was proposed to improve the calculation accuracy of radiotherapy treatment planning system(TPS).Methods Based on Eclipse TPS and Truebeam platform,the theoretical model of dynamic TG width optimization was established,and the optimal tongue groove shape was determined by combining the measurement data of finger ionization chamber.The multi-dimensional verification was carried out by self-developed MATLAB software and OCTAVIUS 1600SRS array.Results Compared with the constant-width TG model,the proposed new model could reproduce the spatial details related to the TG effect,the calculation results were more consistent with the measurement results,and the dose error was within 1%.Conclusions The modeling of non-constant width TG provides reliable dose calculation guarantee for precise radiotherapy,and has important clinical application value.关键词
直线加速器/舌槽建模/剂量验证/指型电离室Key words
Linear accelerator/Tongue groove modeling/Dose verification/Finger-type ionization chamber分类
临床医学引用本文复制引用
陆健锋..放射治疗计划系统中舌槽建模参数确定的新方法[J].临床医学工程,2025,32(3):229-232,4.
