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用于脉冲UHDR PBS小场质子剂量测试的原型钻石探测器的可行性

Jufri Setianegara¹, Aoxiang Wang², Nicolas Gerard³

¹Department of Radiation Oncology, University of Pennsylvania, 3400 Civic Center Boulevard, Philadelphia, Pennsylvania, 19104-6243, UNITED STATES.

Physics in medicine and biology

|September 2, 2025

概括

新型闪光钻石探测器 (fD) 在超高剂量速率 (UHDR) 质子疗法下显示没有和. 这些探测器适用于小场UHDR剂量测量和放射生物实验.

科学领域:

医学物理
辐射瘤学
探测器技术

背景情况:

精确的剂量测量对于质子疗法至关重要,特别是在小型场和超高剂量速率 (UHDR) 中.
由于其材料特性,钻石探测器具有精确测量的潜力.

研究的目的:

在脉冲UHDR笔光束扫描 (PBS) 质子束下调查原型闪光钻石探测器 (fD) 的性能.
评估它们适用于小场UHDR剂量测量.

主要方法:

闪光钻石探测器 (fD) 进行了交叉校准,并以常规剂量速率 (CONV) 进行了反应特征.
使用来自紧质子同步旋流器的脉冲UHDRPBS质子评估了绝对UHDR剂量和小场响应.
使用剃刀二极管和微钻探器进行了比较.

主要成果:

在CONV质子下,fD显示剂量-速率独立性在±0.50%.
在脉冲UHDR照射下,fD在PPC05电离室中响应在±1%以内,和度微不足道.
fD与其他小场探测器达成±1%,与处理计划系统 (TPS) 的计算达成±2%.

结论:

新型fD探测器适用于绝对小场UHDR剂量测量.
它们的小活跃晶体使得它们非常适合用于小范围的测量.
fD可用于UHDR放射生物实验中的相对出口剂量监测.

关键词:

脉冲质子超高剂量速率超高频率充电和钻石探测器双极子探测器笔光扫描UHDR质子小场UHDR质子

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