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一个新的紧型扫描质子疗法系统的光束调试,具有四种不同的剂量计算算法

Ryo Tanokura¹, Masato Horita¹, Makoto Matsumoto¹

¹Department of Radiological Technology, Central Japan International Medical Center, Minokamo, Gifu, Japan.

Journal of applied clinical medical physics

|December 19, 2025

概括

RayStation Monte Carlo (MC) 在一个新的Varian ProBeam 360°TM系统上证明了对质子疗法规划的优异剂量计算准确性. 这使得它成为同质和异质临床病例的首选选择.

科学领域:

医学物理医学物理
辐射瘤学辐射瘤学
医疗成像医学成像

背景情况:

在日本中部国际医疗中心安装了一种新的紧型扫描质子疗法系统 (ProBeam 360°TM).
实施了两个商业处理计划系统 (TPS),即Eclipse和RayStation.
对于与这些TPS配对的这个特定的Varian系统,没有先前的调试结果.

研究的目的:

为了确定临床质子疗法的最佳剂量计算算法.
从两个TPS和测量数据中评估四个算法之间的剂量一致性.
在一个新的Varian ProBeam 360°TM系统上验证算法.

主要方法:

比较了Eclipse和RayStation的笔束算法 (PBA) 和蒙特卡洛 (MC) 算法.
使用26个均的盒子目标和3个现实的临床计划 (前列腺,头/部,C形) 验证的算法.
评估了12个异质的计划 (肺,骨) 并将计算的剂量与测量的横向配置文件进行了比较.

主要成果:

除RayStation PBA外,所有算法都显示出对同质盒规划 (≥95.6%在3%/3mm马) 的良好一致.
只有两个MC算法在患者和异质计划中超过95%的马.
雷Station MC在均质和异质场景中表现出最高的剂量计算精度.

结论:

RayStation MC是临床质子疗法的首选算法.
这个算法为同质和异质目标提供了准确的剂量计算.
这些发现支持RayStation MC在Varian ProBeam 360°TM系统上的临床实施.

关键词:

委托委托委托委托委托委托委托委托委托剂量计算算法剂量计算算法笔光束扫描扫描的使用.质子疗法是一种质子疗法.治疗规划系统的系统规划

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