ArticleFrontiers in public health2026
A 10-year retrospective repeated cross-sectional study of occupational radiation exposure trends among radiology staff in two tertiary hospitals in Chongqing.
Article in Frontiers in public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: This study aimed to investigate 10-year trends in occupational radiation exposure among radiology staff in two tertiary hospitals in Chongqing, China, and to compare exposure patterns across occupational categories, with particular attention to interventional radiology personnel. Methods: A repeated cross-sectional study was conducted using annual dosimetry records from radiation workers at two tertiary hospitals (an urban cancer center and a suburban general hospital) from 2015 to 2025. Annual effective doses were measured using thermoluminescent dosimeters. Data were analyzed for overall dose levels, temporal trends, high-dose events (>5, >10, >20 mSv), and occupational differences. Linear regression was used to evaluate temporal trends. Results: The number of radiation workers increased significantly in both hospitals (both Conclusion: Occupational radiation doses in both hospitals were generally within safe limits. Interventional radiologists remain the highest-risk group by mean dose, while extreme outliers were observed in radiotherapy. The two hospitals showed different dose stability and high-dose event patterns, highlighting the need for targeted protection strategies tailored to each institution's occupational structure and risk profile.
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