LI Lishan, DENG Jingyuan, CHEN Li, GU Yiqin, YING Shengjie. Individual doses of radiological workers in public medical institutions in Minhang District of Shanghai from 2016 to 2019[J]. Journal of Environmental and Occupational Medicine, 2021, 38(3): 278-281. DOI: 10.13213/j.cnki.jeom.2021.20456
Citation: LI Lishan, DENG Jingyuan, CHEN Li, GU Yiqin, YING Shengjie. Individual doses of radiological workers in public medical institutions in Minhang District of Shanghai from 2016 to 2019[J]. Journal of Environmental and Occupational Medicine, 2021, 38(3): 278-281. DOI: 10.13213/j.cnki.jeom.2021.20456

Individual doses of radiological workers in public medical institutions in Minhang District of Shanghai from 2016 to 2019

  • Background As an important part of radiation protection supervision, the individual dose monitoring of radiation workers is helpful to analyze personal protection level at work and provide a basis for the improvement of future protective work.
    Objective This study is conducted to provide an overall understanding of individual radiation doses of radiation workers of public medical institutions in Minhang District of Shanghai, and analyze the changes of individual dose over time and among different job categories.
    Methods Under the regulation of Specifications for individual monitoring of occupational external exposure (GBZ 128-2019), individual radiation doses were monitored with thermoluminescent dosimeters for radiological workers of public medical institutions in Minhang District, involving diagnostic radiology, dental radiology, nuclear medicine, radiotherapy, and interventional radiology. The monitoring results of individual dose in 2016-2019 were analyzed. The annual effective dose per capita and the annual collective effective dose were calculated according to the type of work and monitoring year, and then compared with the national standard.
    Results The individual dose of radiation workers in public medical institutions in Minhang District of Shanghai did not exceed 20 mSv, and the number of monitored individuals increased year by year, with a total number of 2 496 during the studied period. There were significant differences in the annual effective dose of radiation workers across different types of work or different monitoring years (P < 0.05). The median annual effective doses per capita from 2016 to 2019 were 0.07, 0.23, 0.13, and 0.25 mSv·a-1, respectively; the annual collective effective doses were 122.34, 208.92, 152.74, and 209.94 person·mSv, respectively. The annual effective dose per capita of nuclear medicine workers (0.38mSv) was significantly higher than that of workers in other categories.
    Conclusion The average annual effective dose of radiation workers in public medical institutions in Minhang District of Shanghai is within the national standard limit, indicating a stable radiation working environment and a general high management level of radiation protection.
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