对于质子疗法系统的光束建模的全面和有效验证:实际考虑
Yajun Jia1,2, Yifeng Yang1, Zhangmin Li1
1Guangzhou Concord Cancer Center, Radiation Oncology, Guangzhou 510555, China.
Technology in cancer research & treatment
|December 30, 2025
概括
精确的质子疗法需要验证笔束扫描模型. 这项研究通过测量验证了治疗计划系统的计算,确保了安全有效的质子疗法.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
背景情况:
- 精确的光束建模对于安全有效的质子疗法至关重要.
- 笔光束扫描 (PBS) 系统需要在临床使用之前进行彻底的验证.
- 本研究提出了一种全面的PBS模型验证的实用方法.
研究的目的:
- 概述和实施PBS光束模型的实用,高效和全面的验证过程.
- 通过治疗计划系统 (TPS) 算法计算的剂量分布与测量数据进行比较.
- 确保验证的光束模型的临床准备.
主要方法:
- 在TPS中配置PBS光束模型,使用测量光束数据 (IDD,侧面配置,输出).
- 根据AAPM TG 185,TG 350草案和临床见解进行的验证测试.
- 包括矩形场,PDD,平面剂量 (DigiPhant,MatriXX PT),以及在水和动物组织中的端到端测试.
- 将TPS计算 (PCS,Acuros Protons) 与测量进行比较;进行了同行评审.
主要成果:
- TPS计算显示与测量结果有很好的一致性:点剂量差<3%,平面剂量3%/3mm>95%.
- 动物组织的范围差异在3%以内.
- 独立的同行测量证实机器输出协议在1%以内.
结论:
- 经过验证的TPS光束模型 (PCS,Acuros PT) 显示了计算和测量剂量分布之间的良好一致.
- 经过验证的模型适合在质子疗法中临床实施.
- 实际考虑是高效的光束调试和验证的关键.
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