国际放射防护委员会的剂量系数的可靠性

在评价公众成员摄入放射性核素的辐射危害时，需估算每单位摄入量所致的剂量。摄入放射性素后器官或民受到的剂量是受到的剂量是通过生物学模型和剂量学模型来确定的，因此剂量也必须根据模型来确定。文中初步探讨了国际放射防护委员会给出的剂量系数的可靠性问题。文中首先说明了估算剂量系数的概念和方法，然后分析了剂量系数估算中，采用胃肠道模型，呼吸道模型，系统生物动力学模型和剂量学模型所遇到的不确定度的各种主要来源。

RELIABILITY OF ICRP DOSE COEFFICIENTS

In the assessment of the radiation risk by intake, the doses per unit intake, also called dose coefficients, are necessary to use. It is not possible to measure the radiation dose to tissues of the body, dose coefficients must be based on biokinetic and dosimetric models. This paper describes the current status of the document prepared by committee 2 of ICRP, which is to assess the reliability of the dose coefficients for members of the public. Specifically the goal is to assess (1)the uncertainty in the effective dose coefficient as central estimators of the population and (2)the variability of effective dose coefficients among members of the population. The methodology introduced by committee 2 consists in separating the dose calculation into four models (GI, respiratory, systematic biokinetic, dosimetric models). The uncertainties obtained in each model will then be combined to estimate the total uncertainty. (