Dosimetry study and radiation effects for the residents near Semipalatinsk nuclear test site

塞米巴拉金斯克核试验场附近居民的剂量测定研究和辐射影响

基本信息

批准号：
13575037
负责人：
HOSHI Masaharu
金额：
$ 8.64万
依托单位：
HIROSHIMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

From 1995 we have been studied radiation effects for the people near Semipalatinsk nuclear test site, because in 1994 and 2002 our institution was reorganized twice. This study have been raised in 1994 and accepted for further study as one of the main subjects in 2002. The characteristics of the exposure are 1. include both external and internal exposure, 2. high dose levels for example 1 Gy external in Dolon and 3. low dose rate exposure from a few weeks to a few months. In this study we have been continuously performed cesium and plutonium contamination measurements for soil and human tissues. Measurement and preparation of external dose estimation using tooth and brick samples were performed. From these measurements we found in Dolon about 1Gy of exposure. We continued the examination of thyroid, its hormone level and chromosome aberration. Also we are solving technical problems for the personal dose evaluation technique. In October 2002, we held the international dosimetry symposium at Semipalatinsk. Organizers are the Medical Academy ,in Semipalatinsk and Institute for radiation medicine and ecology, and our group leads the symposium. At the symposium we proposed to begin international collaboration to solve the difference of the evaluated doses by different method and that was approved. This is very important since our final purpose is to obtain radiation risks from this study. Therefore the differences of the dosimetry correspond directly those of the evaluated risks.

从1995年开始，我们就开始研究塞米巴拉金斯克核试验场附近居民的辐射影响，因为我们的机构在1994年和2002年进行了两次重组。这项研究于 1994 年提出，并于 2002 年作为主要课题之一接受进一步研究。暴露的特点是 1. 包括外部和内部暴露，2. 高剂量水平，例如多隆 1 Gy 外部暴露和 3低剂量率暴露时间从几周到几个月。在这项研究中，我们连续对土壤和人体组织进行铯和钚污染测量。使用牙齿和砖块样品进行外部剂量估计的测量和准备。根据这些测量结果，我们发现 Dolon 的暴露量约为 1Gy。我们继续检查甲状腺、激素水平和染色体畸变。我们还正在解决个人剂量评估技术的技术问题。 2002年10月，我们在塞米巴拉金斯克举办了国际剂量学研讨会。主办方为塞米巴拉金斯克医学院和放射医学与生态研究所，我组主持本次研讨会。会上我们提出开展国际合作，解决不同方法评估剂量的差异，并获得批准。这非常重要，因为我们的最终目的是从这项研究中获得辐射风险。因此，剂量测定的差异直接对应于评估风险的差异。