临床和FLASH质子束疗法的范围质量保证测量使用质量保证范围热量计
Saad Shaikh1,2, Sonia Escribano-Rodriguez2, Raffaella Radogna3
1Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom.
Frontiers in oncology
|December 8, 2025
概括
质量保证范围热量计 (QuARC) 是一种用于辐射治疗中精确测量质子范围的新型探测器. 它在标准和高剂量率FLASH条件下实现了高精度,确保了患者的安全.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 探测器技术 探测器技术
背景情况:
- 质子疗法需要精确的范围验证,以确保准确的剂量输送.
- 现有的质量保证 (QA) 方法可能耗时或缺乏必要的精度.
- 快速准确的范围QA对于优化治疗计划和确保患者安全至关重要.
研究的目的:
- 为了展示质量保证范围热量计 (QuARC) 的全尺寸临床原型的设计和性能.
- 评估QuARC对快速准确的质子范围QA测量的能力.
- 评估QuARC在传统临床和高剂量率FLASH条件下的表现.
主要方法:
- QuARC使用128个与光电二极管相连的闪光灯板,排列在4个模块中.
- 快速的模拟到数字转换提供了高精度 (20位) 的光输出测量在6kHz.
- 检测器的性能在临床质子疗法研究机构使用各种剂量速率进行了测试.
主要成果:
- 在整个临床能量范围内,QuARC实现了0.4毫米的参考测量的范围精度.
- 在FLASH剂量速率下,QuARC的适配范围与0.3毫米以内的测量一致.
- 初步结果显示探测器的电荷线性在3%以内.
结论:
- 在临床剂量速率下,QuARC是一个有前途的探测器,用于快速准确的质子范围QA.
- 它的高精度和动态范围使其适用于传统和FLASH质子疗法.
- 未来的工作重点是优化校准,以提高准确性和稳定性.
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