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使用Exradin W2塑料闪光灯探测器评估不同放射治疗计划系统的输出因素

Yasuharu Ando¹, Masahiro Okada², Natsuko Matsumoto²

¹Hiroshima City Hospital, Hiroshima, Japan.

Physical and engineering sciences in medicine

|May 16, 2024

概括

塑料闪器探测器 (PSD) 在辐射治疗计划系统 (TPS) 中有效验证输出因子 (OPF). 不同的TPS显示不同的最小场面大小,用于准确的剂量计算,帮助设备验证.

科学领域:

医学物理医学物理
辐射瘤学辐射瘤学
剂量测量方法剂量测量方法

背景情况:

精确的剂量计算在辐射治疗计划系统 (TPS) 中至关重要.
输出因子 (OPF) 是剂量计算的重要参数,特别是在小型领域.
对TPS计算与测量数据的验证对于临床实施至关重要.

研究的目的:

评估和验证不同辐射治疗计划系统 (TPS) 的输出因子 (OPF).
评估塑料闪探测器 (PSD) 适用于验证OPF计算的适用性,特别是对于小型辐射场.
为了比较两个TPS (RayStation和摩纳哥) 在OPF计算中的性能.

主要方法:

使用Exradin W2塑料闪探测器 (PSD)进行测量.
使用TrueBeam线性加速器在4,6和10MV光子能量下辐射小场.
通过RayStation v10.0.1和Monaco v5.51.10 TPS计算的输出因子 (OPF) 与测量数据进行验证.

主要成果:

雷电站的计算结果显示,场面尺寸低至0.5 × 0.5 cm2的测量值的2.0%以内.
摩纳哥的计算在1.5 × 1.5 cm2以下的场面大小的测量值的约2.0%以内.
塑料闪探测器 (PSD) 已被证明是有效的验证OPF计算在TPS.

结论:

塑料闪器探测器 (PSD) 是可靠的工具,用于验证辐射治疗计划系统 (TPS) 中的输出因子 (OPF) 计算.
不同的TPS表现出不同的最小字段大小,用于准确的剂量计算,强调需要系统特定的验证.
这些发现支持对治疗计划准确性的验证和第三方对TPS OPF计算的评估.

关键词:

输出因子的输出因子是指输出因子.塑料闪器的使用方法放射治疗疗法放射治疗疗法小的辐射场,小的辐射场.

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