Measurement of thyroid 131I activity in 162 iodine treatment workers in Hubei Province, China
10.13491/j.issn.1004-714X.2023.03.009
- VernacularTitle:湖北省162名碘治疗工作人员甲状腺131I活度测量
- Author:
Gangtao SUN
1
;
Fang WANG
1
;
Jianfeng ZHANG
2
;
Xiaoliang LI
2
;
Hezheng ZHAI
3
;
Wenshan ZHOU
1
Author Information
1. Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079 China.
2. National Institute for Radiological Protection,China Center for Disease Control and Prevention, Beijing 100088 China.
3. Institute of Radiation Medicine Chinese Academy of Medical Sciences, Tianjin 300192 China.
- Publication Type:OriginalArticles
- Keywords:
Nuclear medicine;
131I;
Thyroid;
Internal exposure
- From:
Chinese Journal of Radiological Health
2023;32(3):264-269
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the current status of occupational internal exposure to 131I in the thyroid of nuclear medicine workers, to explore the influencing factors for internal exposure, and to provide a basis for the radiation safety management of nuclear medicine. Methods The cluster sampling method was used to select 162 workers practicing 131I treatment in 24 hospitals in Hubei Province, China. Thyroid 131I activity levels were measured in vitro using a portable γ-spectrometer, and the committed effective dose was estimated. Results The thyroid 131I activity detected in 13 (54.17%) hospitals was above the lower limit of detection of the instrument. Two hospitals had the highest detection rates, 62.50% and 61.90%; the difference was significant compared with the remaining 11 hospitals (P < 0.0001). Thyroid 131I was detected in 34 workers in total, with a detection rate of 20.99% and a mean activity of 179.09 ± 138.71 (6.02-589.74) Bq. The highest detection rates were found in cleaners and nurses, which were 35.71% and 33.33%, respectively, with no significant difference in detection rate between positions (least P > 0.08). The mean value of the committed effective dose was 0.68 ± 0.52 (0.02-2.22) mSv/a in the 34 workers. Conclusion The 131I consumption and workplace ventilation may be important factors affecting the level of internal exposure. It is important to strengthen the training of nuclear medicine workers on radioprotection and workflow management, as well as the regular monitoring of occupational internal exposure for 131I treatment-related workers.
