Likhtarev I A, Gulko G M, Sobolev B G, Kairo I A, Pröhl G, Roth P, Henrichs K, Grulko G M
Ukrainian Scientific Center for Radiation Medicine, Kiev.
Health Phys. 1995 Jul;69(1):6-15. doi: 10.1097/00004032-199507000-00002.
After the Chernobyl accident in 1986, about 150,000 monitoring measurements were performed in Ukraine. From this data base, 40,000 measurements were selected for which the results of the reference-source measurements could be analyzed by statistical means. The majority of these measurements are of high quality. In this paper, the uncertainties introduced due to the variabilities of anatomic parameters and the measurement geometry are quantified by measurements using a thyroid-neck phantom. Parameters considered are the thyroid mass, the thickness of the tissue overlying the thyroid as well as the detector-neck distance, the orientation, and the horizontal and vertical position of the detector. The uncertainty introduced due to the variability of these factors corresponds to a coefficient of variation in the range of 25-40% for the measured activity.
1986年切尔诺贝利事故后，乌克兰进行了约15万次监测测量。从该数据库中，选取了4000次测量数据，其参考源测量结果可通过统计方法进行分析。这些测量中的大多数质量较高。在本文中，使用甲状腺颈部模型进行测量，对因解剖参数和测量几何形状的变化而引入的不确定性进行了量化。所考虑的参数包括甲状腺质量、甲状腺上方组织的厚度以及探测器与颈部的距离、探测器的方向以及探测器的水平和垂直位置。由于这些因素的变化而引入的不确定性对应于测量活度的变异系数在25%至40%的范围内。
