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放射性污染对人的剂量通常是按参考人的数学模式估算的。这些模式所用的参数通常是用参数分布中代表‘最佳估算’或‘保守’的某一数值来表示,而忽略了已确认的个体差异。迄今几乎都未注意到系统地确定人体生物学参数的差异及其在预估剂量时所造成的不精确性。本文对三个基本生物学参数的变动性进行定量研究:即食入的碘被甲状腺吸收的分数(f),生物半滞留期(T_b)和甲状腺质量(m)。在按年龄组估算
The dose of radioactive contamination to humans is usually estimated based on the mathematical model of the reference person. The parameters used in these modes are usually expressed as a numerical value representing the ’best estimate’ or ’conservative’ in the distribution of parameters, ignoring the identified individual differences. Almost no attention has so far been given to the systematic determination of the differences in human biological parameters and the inaccuracies they cause when estimating the dose. In this paper, we quantitatively studied the variability of three basic biological parameters: the fraction of absorbed iodine absorbed by the thyroid (f), biological half-life (T_b) and thyroid mass (m). Estimated by age group