Furstoss C, Ménard S, Clairand I, Chau Q
Institute for Radiological Protection and Nuclear Safety BP 17, 92262 Fontenay-aux-Roses, France.
Radiat Prot Dosimetry. 2007;125(1-4):180-4. doi: 10.1093/rpd/ncm186. Epub 2007 Aug 4.
ICRP 60 has defined the personal dose equivalent Hp(10) as an estimator of the effective dose E. Personal dosimeters, worn on the trunk, allow the measurement of the quantity Hp(10). However, the characteristics of the instrumentation and the definition of Hp(10) itself can generate differences between the two quantities, depending on the energies and on the directional distribution of the incident radiation. The objective of this study is to evaluate the possibility of the measurement of the effective dose E using an instrumented anthropomorphic phantom at workplaces. In the first step of this study, calculations of the effective dose for standard configurations are made using the Monte Carlo code MCNPX. This paper presents the model of the numerical anthropomorphic phantom and the results for whole body irradiations by broad unidirectional or plane-parallel photon beams. The results agree with those calculated by Zankl et al., so confirming the good suitability of the code and the phantom used. Then, the dose distributions inside some organs are presented and the locations of future detectors for the instrumented phantom are discussed.
国际放射防护委员会第60号出版物将个人剂量当量Hp(10)定义为有效剂量E的估算值。佩戴在躯干上的个人剂量计可用于测量Hp(10)这一量值。然而，仪器的特性以及Hp(10)本身的定义可能会导致这两个量之间存在差异，具体取决于入射辐射的能量和方向分布。本研究的目的是评估在工作场所使用装有仪器的人体模型测量有效剂量E的可能性。在本研究的第一步，使用蒙特卡罗代码MCNPX对标准配置的有效剂量进行计算。本文介绍了数字化人体模型的模型以及宽单向或平面平行光子束全身照射的结果。结果与赞克尔等人计算的结果一致，从而证实了所用代码和人体模型的良好适用性。然后，给出了一些器官内部的剂量分布，并讨论了装有仪器的人体模型未来探测器的放置位置。
