切尔诺贝利组织银行的甲状腺剂量:基于修订的方法和个人居住和饮食史的改进估计
Sergii Masiuk1,2, Mykola Chepurny1, Valentyna Buderatska1
1State Institution "National Research Center for Radiation Medicine, Hematology and Oncology of the National Academy of Medical Sciences of Ukraine", Kyiv, Ukraine.
Radiation and environmental biophysics
|December 19, 2024
概括
收集详细的住宿和饮食史显著改进了切尔诺贝利 (切尔诺贝利) 幸存者的甲状腺剂量估计. 个人采访提高了对甲状腺癌患者辐射剂量评估的准确性.
科学领域:
- 辐射剂量计是辐射剂量计.
- 核事故对健康的影响
- 甲状腺癌流行病学 甲状腺癌流行病学
背景情况:
- 切尔诺贝利 (切尔诺贝利) 核电站事故导致甲状腺癌发病率增加.
- 准确的辐射剂量估计对于理解甲状腺癌中剂量反应关系至关重要.
- 切尔诺贝利组织银行 (CTB) 个人目前的剂量测量依赖于有限的住宅数据.
研究的目的:
- 通过对甲状腺剂量估计进行个人访谈,评估收集额外的住所和饮食史数据的影响.
- 通过更新的剂量测量系统和新的数据,对切尔诺贝利幸存者的现有甲状腺剂量计算进行修订.
主要方法:
- 修订甲状腺剂量从131I摄入到197名甲状腺 papillary 癌症患者从CTB使用甲状腺剂量计2020系统乌克兰 (TDU20).
- 通过个人采访收集详细的居住和饮食史数据,对具有稀缺剂量测量信息的个人进行个人采访.
- 将采访数据和TDU20修订纳入之前和之后的剂量估计进行比较.
主要成果:
- 数学平均甲状腺剂量从700mGy下降到510mGy,中位数剂量从120mGy下降到81mGy.
- 个人甲状腺剂量差异很大 (0至11.9 Gy),几何标准偏差在1.3至5.3之间 (平均值2.7,中位数2.9).
- 在29.8%的个人中,个人采访数据对剂量产生了超过100mGy的影响,而TDU20修订导致了17.3%的类似变化.
结论:
- 个人采访显著提高了切尔诺贝利幸存者的甲状腺剂量评估的准确性.
- 未来使用CTB样本的研究应该包括个人采访,以改进剂量估计.
- 辐射安全当局应鼓励个人在核事故发生后保持行为和饮食记录.
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