Monitoring and analysis of internal exposure of 131I treatment staff in nuclear medicine department in Jiangsu province from 2021 to 2024
10.3760/cma.j.cn112271-20240514-00175
- VernacularTitle:2021—2024年江苏省核医学科 131I治疗工作人员内照射个人监测与分析
- Author:
Xiaodong SHI
1
;
Zihao ZHANG
;
Xiaoyong YANG
;
Jin WANG
;
Wei CHEN
;
Jiayi MA
Author Information
1. 江苏省疾病预防控制中心放射防护所，南京 210009
- Publication Type:Journal Article
- Keywords:
Internal exposure;
Nuclear medicine department;
Thyroid;
131I
- From:
Chinese Journal of Radiological Medicine and Protection
2025;45(6):512-518
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To understand the basic situation of occupational internal exposure to 131I among nuclear medicine staff in Jiangsu province, and to analyze the relevant factors that contribute to the formation of internal exposure. Methods:A four-year external direct measurement of thyroid organ counting was conducted on nuclear medicine staff who underwent 131I treatment in Jiangsu province. The result were statistically analyzed, and the effective dose of accumulated internal exposure was estimated. The relationship between the detection rate of internal exposure and 10 possible factors was analyzed. Results:A total of 847 person-times were monitored during the monitoring period, of which 345 person-times were detected for 131I, with a detection rate of 40.7%. The highest individual monitoring result for internal exposure was 24.83 kBq, with an average value of 77.3 Bq and a median of 28.3 Bq among the detected individuals. The average committed effective dose of internal exposure for staff was 0.201 mSv, with a median of 0.074 mSv among the detected individuals. Conclusions:There is statistically significant difference in the detection rate of individual doses of internal exposure among nuclear medicine staff in each year. It has been observed that the main factors related to the detection rate are age, hospital grade, job position, location, whether there is an automatic dispensing operation, operating method, exposure level and length of exposure. Sufficient attention should be given to the situation of internal exposure, and further effective monitoring should be conducted on all such staff members.
