| Xuan Zhiqiang,Hao Xiaoji,Yu Shunfei,et al.Estimation of 131I internal exposure of thyroid and dose to nuclear medicine staff in Zhejiang province[J].Chinese Journal of Radiological Medicine and Protection,2025,45(6):531-536 |
| Estimation of 131I internal exposure of thyroid and dose to nuclear medicine staff in Zhejiang province |
| Received:May 09, 2024 |
| DOI：10.3760/cma.j.cn112271-20240509-00171 |
| KeyWords:Nuclear medicine 131I Thyroid Internal exposure |
| FundProject:浙江省医药卫生科学研究基金项目(2022KY133) |
| Author Name | Affiliation | | Xuan Zhiqiang | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Hao Xiaoji | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Yu Shunfei | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Lai Zhongjun | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Guo Jiadi | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Cao Yiyao | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Wang Donghang | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China | | Hu Guijia | Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China |
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| Abstract:: |
| Objective To investigate the current situation of nuclear medicine practices, determine the number of nuclear medicine staff, conduct internal exposure monitoring and dose estimation for nuclear mecidine staff engaged in 131I treatment in Zhejiang province. Methods A survey was conducted over all the 22 hospitals involved in 131I treatment in the province. The 131I activity in thyroid of 96 stafff in 131I treatment workplaces were measured by means of direct method. At the same time, the effective doses from internal exposure were estimated and the influencing factors were analyzed. Results 131I activity in thyroids was found to be above the detection limit for 49 staff (51.04%) in nineteen hospitals. The maximum value of 131I activity was 629.18 Bq. There was no statistically significant difference in 131I detection rate in thyroid of 131I treatment staff between different positions, different genders and different levels of hospitals (P>0.05). Comparisons of 131I activity of thyroid of nuclear medicine staff for theatment of thyroid cancers had shown that the highest was for nurses, followed by technicians and doctors, and the lowest was for cleaning staff (H=6.39, P<0.05). The estimated committed effective dose to the nuclear medicine staff ranged from 0.05 to 2.37 mSv, with those below 1 mSv accounting for 93.88% of the total. Logistic regression analysis showed that nursing position was the risk factor contributing to the committed effective dose (OR=2.805, 95%CI 1.076-7.314). Conclusions In Zhejiang province, the committed effective dose to thyroid of nuclear medicine staff from 131I internal exposure was not in excess of the dose limit. However, the staff performing iodine therapy still need to strengthen protection against internal exposure and take scientific and effective protective measures to reduce the risk of health hazards from internal exposure. |
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