影像科学与光化学 ›› 2022, Vol. 40 ›› Issue (3): 469-473.DOI: 10.7517/issn.1674-0475.211135

• 综述与论文 • 上一篇    下一篇

医源性电离辐射剂量率估算与生物医学防护研究

董亚军1, 程强力2   

  1. 1. 南华大学附属第二医院, 湖南 衡阳 421001;
    2. 南华大学附属第一医院, 湖南 衡阳 421001
  • 收稿日期:2021-11-15 出版日期:2022-05-15 发布日期:2022-05-27

The Dose Rate Estimation and Medical Biomedical Protection of Iatrogenic Ionizing Radiation

DONG Yajun1, CHENG Qiangli2   

  1. 1. The Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan, P. R. China;
    2. The First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, P. R. China
  • Received:2021-11-15 Online:2022-05-15 Published:2022-05-27

摘要: 医学影像拍摄过程中遭受的医源性电离辐射剂量可能诱发癌症,如何准确地估算出剂量率,降低医源性电离辐射技术误差,本文提出一种医源性电离辐射剂量率估算与生物医学防护研究方法。利用放射事故剂量的相关理论结合可供剂量得到估算所需参数信息,构建人体干细胞的存活模型后,采用无源效率刻度方法结合转换系数估算器官剂量;通过所测量的空气比释动能估算全身有效剂量,快速估算医源性电离辐射剂量率。通过质量保证方法与统计学方法对比验证所得判断假设的辐射情况是否与实际相同。实验结果表明:该方法能够快速、准确地实现医源性电离辐射剂量率估算,并且及时给出对应生物医学防护措施。

关键词: 医源性电离辐射, 剂量率估算, 质量保证, 统计学, 辐射效应, 辐射损伤, 生物医学防护

Abstract: The dose of iatrogenic ionizing radiation suffered in the process of medical image shooting may induce cancer. How to accurately estimate the dose rate and reduce the technical error of iatrogenic ionizing radiation, this paper proposes a research method of dose rate estimation of iatrogenic ionizing radiation and medical biomedical protection. After constructing the survival model of human stem cells, the organ dose was estimated by passive efficiency calibration method combined with conversion coefficient, through the relevant theory of radiation accident dose to combine the available dose to obtain the parameter information required for estimation. The whole body effective dose was estimated by the measured air specific release kinetic energy, and the dose rate of iatrogenic ionizing radiation is quickly estimated. Through the comparison of quality assurance method and statistical method, it is verified whether the hypothetical radiation situation is the same as the actual situation. The experimental results showed that this method can quickly and accurately estimate the dose rate of iatrogenic ionizing radiation, and give the corresponding biomedical protection measures in time.

Key words: iatrogenic ionizing radiation, dose rate estimation, quality assurance, statistics, radiation effect, radiation damage, medical biomedical protection