Preliminary study on occupational internal exposure to 131I among nuclear medicine workers in a hospital in Nanjing
10.3760/cma.j.cn112271-20250702-00219
- VernacularTitle:南京市某医院核医学科工作人员 131I职业性内照射情况的初步研究
- Author:
Jiayi MA
1
;
Zihao ZHANG
;
Yuanyuan ZHOU
;
Qun CHEN
;
Xiaoyong YANG
;
Jin WANG
;
Xiaodong SHI
Author Information
1. 江苏省疾病预防控制中心，南京 210009
- Publication Type:Journal Article
- Keywords:
Nuclear medicine;
Internal exposure;
Nuclear medicine department;
Thyroid gland;
131I
- From:
Chinese Journal of Radiological Medicine and Protection
2025;45(10):1009-1014
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the basic situation of occupational internal exposure to 131I among staff in the nuclear medicine department. Methods:Direct in- vitro measurements of thyroid doses from internal exposure were conducted for six months on 36 staff members of a hospital′s nuclear medicine department in Nanjing using the ORTEC Detective-100 portable high-purity germanium (HPGe) spectrometer. The cumulative effective doses were estimated, and the distribution of internal doses and their relationship with job type and external doses were analyzed. Results:During the monitoring period, a total of 203 monitorings were made. Of the monitoring result, 85.7% were below the recording level. Of the result exceeding the recording level, 12.8% were below the investigation level, while 1.5% exceeded the investigation level. The highest personal internal dose during the monitoring period was 2.54 mSv, the lowest was 0.015 mSv, and the median was 0.094 mSv.Conclusions:During the monitoring period, 14.3% of the monitored staff had result above the recorded levels. In the working environment of radionuclide treatment, there is no significant difference in the internal dose received between doctors, nurses, technicians, or other relevant personnel.
