中国成年参考人体模内照射剂量转换系数计算  

Calculation of internal exposure dose coefficients for Chinese adult reference phantom

作　　者：鄢书畅 邱睿[1,2] 武祯[1,2,3] 罗熹宇 张辉 李君利[1,2] YAN Shuchang;QIU Rui;WU Zhen;LUO Xiyu;ZHANG Hui;LI Junli(Department of Engineering Physics,Tsinghua University,Beijing 100084;Key Laboratory of Particle&Radiation Imaging,Ministry of Education,Tsinghua University,Beijing 100084;Nuctech Company Limited,Beijing 100084)

机构地区：[1]清华大学工程物理系,北京100084 [2]清华大学粒子技术与辐射成像教育部重点实验室,北京100084 [3]同方威视技术股份有限公司,北京100084

出　　处：《辐射防护》2024年第4期323-335,共13页Radiation Protection

基　　金：国家自然科学基金(U2167209,12175114);国家重点研发计划(2021YFF0603600);计量与校准国家重点实验室开放基金(JLKG2022001C001)。

摘　　要：在核科学与技术、核能、核医学等领域中,对相关公众、职业人员、病人等在工作、核事故以及照射治疗的过程中受到的内照射剂量进行准确的评估是人员健康安全的重要保障。参考国际放射防护委员会(ICRP)生物动力学模型和放射性核素信息,通过计算比吸收分数(SAF),得到内照射剂量转换系数。利用ICRP参考人体素模型验证计算方法的正确性,最后基于中国成年参考人体素体模,系统地建立了中国成年参考人的内照射剂量系数数据库。数据库包括中国成年参考人α、β和γ射线比吸收分数、中国成年参考人体模敏感器官(组织)待积当量剂量转换系数和中国成年参考人待积有效剂量转换系数。将计算的结果与GB 18871—2002提供的内照射剂量转换系数进行了比较分析,结果表明采用中国成年参考人体模内照射剂量转换系数数据库,能更加准确地评估中国成年人摄入放射性核素所致的内照射剂量。本工作为中国成年人内照射剂量评估提供了标准化的方法和全面的数据,具有理论价值和实践意义。In the fields of nuclear science and technology,nuclear energy and nuclear medicine,accurate assessment of internal exposure dose received by relevant public,professionals,and patients is an important guarantee for personnel health and safety during work,nuclear accidents,and radiation therapy.Referencing the ICRP biokinetic model and radionuclide information,the internal dose coefficient is obtained by calculating the Specific Absorbed Fraction(SAF).The correctness of the calculation method is verified using the ICRP reference human phantom.Finally,based on Chinese adult reference human phantom,a database of internal radiation dose coefficients for Chinese adult reference human is calculated.The database obtained includes the Specific Absorbed Fraction(SAF)of α,β,andγrays for Chinese adult reference human,the committed equivalent dose coefficients for sensitive organs(tissues)of Chinese adult reference human,and the committed effective dose coefficients for Chinese adult reference human.The calculated results were compared and analyzed with the internal dose conversion coefficients provided by GB 18871—2002.It was found that using the internal radiation dose conversion coefficient database of Chinese adult reference human can more accurately assess the internal dose caused by the intake of radioactive nuclides by Chinese adults.

关 键 词：内照射 剂量转换系数 中国参考人模型 

分 类 号：TL72[核科学技术—辐射防护及环境保护]