Personal dose monitoring results of 307 interventional radiology workers in Liaoning Province, China / 中国辐射卫生

ABSTRACT

Objective To investigate the personal dose level of occupational external exposure among interventional radiology workers in Liaoning Province of China, and to provide a reference for better occupational radiation protection. Methods According to the national standard GBZ 128—2016 Specifications for individual monitoring of occupational external exposure, the thermoluminescence method was used to measure the monitoring dose inside the lead clothes (HW) and outside the lead clothes (HN) of interventional radiology workers, and the Mann-Whitney U test and the Kruskal-Wallis H test were used for statistical analysis. Results Dual dosimeter monitoring data were collected from 307 interventional radiology workers in Liaoning Province in 2019, with a mean annual effective dose of 0.81 mSv and a maximum annual effective dose of 7.03 mSv, and 72.96% of the workers monitored had an annual effective dose of less than 1 mSv. The interventional radiology workers in tertiary hospitals had a significantly higher mean annual effective dose than those in secondary hospitals (0.95 mSv vs 0.65 mSv, P < 0.05). There was a significant difference in mean annual effective dose between departments (P < 0.05), and the department of interventional radiology had a significantly higher mean annual effective dose than the other departments (0.92 mSv vs 0.64 mSv), while the department of cardiology had a similar mean annual effective dose to the cerebrovascular department (0.78 mSv vs 0.78 mSv). Conclusion The occupational exposure dose of 307 interventional radiology workers in Liaoning Province meets the requirements in national regulations and standards and is higher than the national level, which suggests that radiation protection supervision and personal training should be further strengthened for interventional radiology.