一种多弧和每弧恒定能量治疗规划方法,用于高效的质子弧疗法
Jiangjun Ma1, Ya-Nan Zhu2, Yuting Lin3
1Institute of Natural Sciences and School of Mathematics, Shanghai Jiao Tong University, Shanghai, China.
Medical physics
|September 22, 2025
概括
一种新的质子弧治疗规划方法使用每弧恒定能量来提高治疗效率和计划质量. 这种方法显著减少了分娩时间和能源切换,提高了患者的护理.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 计算生物学 计算生物学
背景情况:
- 质子弧疗法提供了更好的剂量和线性能量转移 (LET) 合规性.
- 在质子弧疗法中频繁的能量变化降低了输送效率.
研究的目的:
- 开发一种新的质子弧处理规划方法,使用每弧恒定的能量.
- 为质子弧疗法优化计划质量和交付效率.
主要方法:
- 开发了一个块直角匹配追求 (BOMP) 优化算法.
- 该方法采用了一种代方法,交替选择能量和优化现货重量.
- BOMP与启发式搜索 (HS),传统 (CONV) 和能量层优化 (ELO) 方法进行了比较.
主要成果:
- 与HS相比,BOMP在多弧度规划方面表现出更高的规划质量.
- BOMP实现了与强度调节质子疗法 (IMPT) 相比的计划交付时间,并改善了计划质量.
- 与CONV和ELO相比,BOMP在各种情况下 (肝脏,头,肺) 显著减少了能量层切换时间和总计划交付时间.
- 具体的改进包括提高符合性指数 (CI),降低最大目标剂量,减少受辐射器官体积 (例如脑干).
结论:
- 成功开发了一种新的多弧度,恒定能量每弧度质子弧度规划方法.
- 这种方法消除了每次电弧的能量切换的需要.
- 与传统和ELO方法相比,拟议的方法可以保持或提高计划质量,同时提高效率.
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