Analysis of 131I radiation internal exposure in nuclear medicine staff of eight hospitals in Guangdong Province
- Author:
LONG Xuan TAN Zhan HUANG Wei xu MA Rui CUI Fan LIU Yan bing
- Publication Type:Journal Article
- Keywords:
Nuclear medicine Radiation workers I Internal radiation Thyroid gland Dose Assessment
- From:
China Occupational Medicine
2022;52(04):454-
- CountryChina
- Language:Chinese
-
Abstract:
Abstract: Objective （ ）
To evaluate the internal exposure levels and risk in nuclear medicine workers NMWs engaged in
Methods
radionuclide therapy in Guangdong Province. A total of 61 NMWs from eight hospitals in Guangdong Province were
selected as the study subjects using the convenient sampling method. The 0.364 MeV full energy peak efficiency was detected in
（ ） in vitro ， -
deltoid muscle of right upper arm as background and thyroid gland by direct measurement method and the iodine 131
（131 ） Results ，131
I activity in thyroid gland was calculated to evaluate the internal irradiation level. Among the 61 NMWs I was
，
detected in the thyroid gland of four nuclear medical staffs in three hospitals and the detection rate was 6.6%. The median and
- ［M（ P-P ）］ 131 （ - ）
0 100 percentile 0 100 of thyroid I activity were 42.9 35.1 47.1 Bq. When assuming that the monitoring period was
， M（ P-P ） （ - ） ，
30 days the 0 100 of single committed effective dose in thyroid gland was 0.014 0.011 0.015 mSv and the annual dose
（ - ） Conclusion
of internal irradiation was 0.162 0.132 0.180 mSv/a. The internal exposure of NMWs in the eight hospitals in
（ ） ，
Guangdong Province meets the annual effective dose limits ≤20.000 mSv/a . However it is necessary to pay attention to the
internal radiation protection of NMWs and take reasonable protective measures to reduce the internal exposure risk of NMWs.
