Individual monitoring results of occupational external exposure for radiation workers in Beijing pet hospital, 2022–2024
10.13491/j.issn.1004-714X.2026.03.005
- VernacularTitle:2022—2024年北京市宠物医院放射工作人员外照射个人剂量监测结果分析
- Author:
Hongfeng ZHAO
1
;
Xian XUE
2
;
Jiejun LI
1
;
Yanhui GAO
1
;
Yaning LIU
1
;
Yiyun WANG
1
;
Yibing TIAN
1
;
Hui XU
2
Author Information
1. Beijing Center for Disease Control and Prevention, Beijing 100021, China.
2. National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China.
- Publication Type:OriginalArticles
- Keywords:
Pet hospital;
Radiation worker;
Occupational external exposure;
Individual dose
- From:
Chinese Journal of Radiological Health
2026;35(3):336-342
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze personal external exposure dose monitoring results of pet hospital radiation workers in Beijing from 2022 to 2024, and to provide scientific evidence for developing effective monitoring protocols, standardizing radiological practices in pet hospitals, and protecting the health of both workers and the public. Methods Personal dose equivalents, Hp(10), were measured using GR-200A thermoluminescent dosimeters. Monitoring included radiation workers at 286 pet hospitals across all 16 districts of Beijing from 2022 to 2024. Each monitoring cycle lasted no more than 90 days. Annual effective doses were calculated by summing the results of four consecutive quarterly cycles. Data were processed and analyzed using Access and TLPS 6.41 software. All evaluations complied with national laws, regulations, and technical standards. Results A total of 1,579 person-time measurements were recorded. Only 51.87% of workers completed the full four-cycle annual monitoring schedule. Over the study period, the mean annual effective dose was 0.29 mSv, and the median dose was 0.14 mSv. The collective effective dose was 238.34 man-mSv. Notably, 94.26% of workers had annual effective doses below 1.0 mSv, and only 0.12% had doses at or above 5 mSv. Dose levels showed a statistically significant downward trend (P<0.05). Both independent and chain-branded clinics had a median annual effective dose of 0.14 mSv. In independent clinics, the proportion of workers with doses below 1.0 mSv increased from 80.77% in 2022 to 98.82% in 2024. In chain-branded clinics, this proportion rose from 96.88% to 98.11% over the same period. Conclusion Radiation exposure among pet hospital workers in Beijing remains at low levels, well below regulatory limits, and shows an overall declining trend. The disparity in personal doses between independent and chain-branded pet hospitals has diminished over time. Nevertheless, the industry still faces challenges such as high staff turnover and low monitoring completion rates. Expanding monitoring coverage and harmonizing protection standards would provide a scientific basis for precise, nationwide regulation.
