牙釉质EPR剂量测定方法的主要影响因素分析

周莉

周莉

文章导航 > 国际放射医学核医学杂志 > 2004, 28 > 3: (128-132)

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牙釉质EPR剂量测定方法的主要影响因素分析

周莉

300192 天津, 中国医学科学院中国协和医科大学放射医学研究所保健物理室
中图分类号: R144.1

An analysis of major effect factors in enamel EPR dosimetry

ZHOU Li

Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical Col-lege, Tianjin 300192, China
CLC number: R144.1

摘要: EPR(电子顺磁共振)剂量测定方法是回顾性测定个人辐射剂量的主要方法,它能够准确估算出很久以前发生的辐射照射事件的吸收剂量值,其理论基础是在牙釉质中,辐射所致自由基水平随着辐射剂量的增加而增加。目前,将EPR方法用于低剂量测定还存在一些困难,为了降低测量阈值,减小误差,优化方法,需要进一步研究该方法的影响因素。本文重点分析了影响牙釉质EPR剂量方法测量阈值和测量结果不确定度的主要因素,并对解决这些问题的修正方法进行了讨论。
- 牙釉质 /
- 电子顺磁共振 /
- 辐射剂量 /
- 辐射监测
Abstract: Effective dose assessment can be given even long after the irradiation exposure event by the method of EPR (electron paramagnetic resonance) dosimetry, which has been developed into a lead-ing method for retrospective dosimetry of individual radiation exposure. The principle of EPR dosimetry is based on the fact that the concentration of radiation-induced radicals increases with irradiation dose. There is still some difficulty in the measurement of low dose at present, so further investigation on the effect fac-tors of the method is required in order to lower measure threshold, decrease error and optimize the method. Several major effect factors of measurement threshold and result uncertainty in EPR dosimetry have been analyzed and the corresponding correction methods for the factors were proposed.
- enamel /
- electron paramagnetic resonance /
- radiation dose /
- radiation monitoring
本作品遵循Signature-Non-Commercial Use 4.0 International (CC BY-NC 4.0)协议

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牙釉质EPR剂量测定方法的主要影响因素分析

周莉

300192 天津, 中国医学科学院中国协和医科大学放射医学研究所保健物理室

收稿日期: 2004-03-09

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摘要: EPR(电子顺磁共振)剂量测定方法是回顾性测定个人辐射剂量的主要方法,它能够准确估算出很久以前发生的辐射照射事件的吸收剂量值,其理论基础是在牙釉质中,辐射所致自由基水平随着辐射剂量的增加而增加。目前,将EPR方法用于低剂量测定还存在一些困难,为了降低测量阈值,减小误差,优化方法,需要进一步研究该方法的影响因素。本文重点分析了影响牙釉质EPR剂量方法测量阈值和测量结果不确定度的主要因素,并对解决这些问题的修正方法进行了讨论。