一种系统的方法,用于估计ICRU报告95操作量,用于人员监控,使用3元素TLD章系统
Munir S Pathan1,2, S M Pradhan1, T Palani Selvam1,2
1Radiological Physics & Advisory Division, Health, Safety & Environment Group, Bhabha Atomic Research Centre, Mumbai, India.
概括
从ICRU报告95中实施新的辐射剂量操作量 (OQ) 对人员剂量测量是可行的. 多元件剂量计使用各种方法,包括机器学习,有效估计新的剂量量 (Hp).
科学领域:
- 医学物理 医学物理
- 辐射剂量计 辐射剂量计
- 职业健康 职业健康 职业健康
背景情况:
- ICRU报告95修订了用于外部辐射监测的操作量 (OQ).
- 新的OQ (Hp) 与以前的 (Hp) 显著不同,在20-100 keV范围内,影响剂量测量系统.
- 诊断放射学是一个普遍存在低光子能量的领域,面临着整合挑战.
研究的目的:
- 研究使用多元元素被动剂量计系统实施ICRU-95OQ的可行性.
- 开发和评估用于估计新剂量量 (Hp) 的系统方法.
- 评估基于CaSO4:Dy的热发光剂量计对更新剂量计的适用性.
主要方法:
- 评估了Hp估计的三种方法:线性方程,非线性方程和多阶段机器学习模型.
- 使用了多元素被动剂量计系统,特别是CaSO4:DyTLDs.
- 将估计的剂量与实际输送的剂量进行比较,以确定准确度.
主要成果:
- 所有研究的方法都在剂量估计方面显示出有希望的准确性.
- 机器学习模型在准确性方面显示出轻微的优势.
- 大约99%的估计剂量在实际剂量的±30%以内,这表明其可靠性很高.
结论:
- 多元件被动剂量计可以容纳新的ICRU-95操作量 (Hp) 没有重大系统重新设计.
- 系统方法,特别是机器学习,为HP估计提供了有效的解决方案.
- 这项研究验证了多元件被动剂量计在实施更新人员监控系统方面的有效性.
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