{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T05:44:53Z","timestamp":1785908693855,"version":"3.56.0"},"reference-count":19,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:00:00Z","timestamp":1785888000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Public Health"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>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.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>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 (&amp;gt;5, &amp;gt;10, &amp;gt;20\u202fmSv), and occupational differences. Linear regression was used to evaluate temporal trends.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The number of radiation workers increased significantly in both hospitals (both\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.001). Overall mean annual doses ranged from 0.24 to 0.69\u202fmSv, well below the national limit of 20\u202fmSv. Interventional radiology staff consistently had the highest mean doses among all categories in both hospitals. However, the highest maximum doses were from radiotherapy staff in the urban cancer center (45.42\u202fmSv in 2017). The suburban general hospital showed higher dose variability, more frequent high-dose events (19 vs. 5 records), and a significant increasing trend in interventional radiology mean doses (\n                      <jats:italic>\u03b2<\/jats:italic>\n                      \u202f=\u202f0.08\u202fmSv\/year, 95% CI: 0.04\u20130.12,\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.003), whereas the urban cancer center maintained stable low doses with no significant temporal trend. These inter-hospital differences reflect a combination of hospital type, service mix, and management practices, and should not be attributed solely to urban-suburban location.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>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\u2019s occupational structure and risk profile.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpubh.2026.1888215","type":"journal-article","created":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T04:52:45Z","timestamp":1785905565000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["A 10-year retrospective repeated cross-sectional study of occupational radiation exposure trends among radiology staff in two tertiary hospitals in Chongqing"],"prefix":"10.3389","volume":"14","author":[{"given":"Yeyao","family":"Wu","sequence":"first","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengyun","family":"Wu","sequence":"additional","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinghua","family":"Zhou","sequence":"additional","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nan","family":"Jin","sequence":"additional","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Jin","sequence":"additional","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang","family":"Yuan","sequence":"additional","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Li","sequence":"additional","affiliation":[{"name":"Radiology Laboratory, Department of Occupational Health and Radiological Health, Chongqing Center for Disease Control and Prevention","place":["Chongqing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,8,5]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"021002","DOI":"10.1088\/1361-6498\/added2","article-title":"A systematic review on the occupational health impacts of Ionising radiation exposure among healthcare professionals","volume":"45","author":"Lopes","year":"2025","journal-title":"J Radiol Prot"},{"key":"ref2","doi-asserted-by":"publisher","first-page":"1285","DOI":"10.1093\/aje\/kwae256","article-title":"Site-specific Cancer mortality after low-level exposure to ionizing radiation: findings from an update of the international nuclear workers study (Inworks)","volume":"194","author":"Richardson","year":"2025","journal-title":"Am J Epidemiol"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"370","DOI":"10.1136\/oemed-2025-110257","article-title":"Protracted exposure to low-dose ionising radiation and cancer incidence among 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Oncol"},{"key":"ref9","doi-asserted-by":"publisher","first-page":"109144","DOI":"10.1016\/j.envres.2020.109144","article-title":"Occupational radiation exposure of health professionals and Cancer risk assessment for Lithuanian nuclear medicine workers","volume":"183","author":"Adliene","year":"2020","journal-title":"Environ Res"},{"key":"ref10","doi-asserted-by":"publisher","first-page":"e15734056331218","DOI":"10.2174\/0115734056331218241004080531","article-title":"A 17-years follow-up of occupational radiation doses in an interventional cardiology department","volume":"20","author":"Kostova-Lefterova","year":"2024","journal-title":"Curr Med Imaging"},{"key":"ref11","doi-asserted-by":"publisher","first-page":"314","DOI":"10.1093\/rpd\/ncab107","article-title":"Evaluation of annual radiation exposure of staff in a cardiac catheterization department in Saudi Arabia","volume":"195","author":"Sulieman","year":"2021","journal-title":"Radiat Prot Dosim"},{"key":"ref12","doi-asserted-by":"publisher","first-page":"36","DOI":"10.1093\/rpd\/ncab152","article-title":"Assessment of occupational radiation doses in different diagnostic, interventional and therapeutic radiology and molecular imaging services in Oman","volume":"197","author":"Bouchareb","year":"2021","journal-title":"Radiat Prot Dosim"},{"key":"ref13","doi-asserted-by":"publisher","first-page":"762","DOI":"10.3760\/cma.j.cn121094-20240118-00027","article-title":"Analysis of personal dose monitoring results of occupational external exposure for radiation Workers in a Hospital","volume":"42","author":"Wang","year":"2024","journal-title":"Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi"},{"key":"ref14","doi-asserted-by":"publisher","first-page":"260","DOI":"10.5543\/tkda.2024.18363","article-title":"Evaluation of procedure doses and staff attitudes in interventional cardiology in terms of radiation safety","volume":"52","author":"U\u011frak","year":"2024","journal-title":"Turk Kardiyol Dern Ars"},{"key":"ref15","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1093\/rpd\/ncaf135","article-title":"Assessment of occupational exposure to external radiation for workers at the radiotherapy institutes in Tanzania (2019\u20132023): a case study of ocean road Cancer Institute in Dar Es Salaam","volume":"202","author":"Ndovi","year":"2026","journal-title":"Radiat Prot Dosim"},{"key":"ref16","doi-asserted-by":"publisher","first-page":"1067","DOI":"10.1007\/s11604-024-01579-3","article-title":"Occupational radiation exposure among medical personnel in university and general hospitals in Japan","volume":"42","author":"Nessipkhan","year":"2024","journal-title":"Jpn J Radiol"},{"key":"ref17","article-title":"Occupational and patient doses for interventional radiology integrated into a dose management system","author":"Va\u00f1\u00f3","year":"2022"},{"key":"ref18","first-page":"103361","article-title":"Alerts to improve occupational protection during interventional radiology. More attention is needed for simple but frequent procedures","volume-title":"Physica Medica: European Journal of Medical Physics","author":"Va\u00f1o","year":"2024"},{"key":"ref19","doi-asserted-by":"publisher","first-page":"512","DOI":"10.1016\/j.radi.2024.01.010","article-title":"Radiation dose to multidisciplinary staff members during complex interventional procedures","volume":"30","author":"Mussmann","year":"2024","journal-title":"Radiography"}],"container-title":["Frontiers in Public Health"],"original-title":[],"link":[{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpubh.2026.1888215\/full","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T04:52:56Z","timestamp":1785905576000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpubh.2026.1888215\/full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,5]]},"references-count":19,"alternative-id":["10.3389\/fpubh.2026.1888215"],"URL":"https:\/\/doi.org\/10.3389\/fpubh.2026.1888215","relation":{},"ISSN":["2296-2565"],"issn-type":[{"value":"2296-2565","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,5]]},"article-number":"1888215"}}