{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T03:09:13Z","timestamp":1778468953910,"version":"3.51.4"},"reference-count":26,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T00:00:00Z","timestamp":1773532800000},"content-version":"vor","delay-in-days":14,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T00:00:00Z","timestamp":1772323200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To establish the first DRLs for contrast\u2010enhanced diagnostic pediatric fluoroscopic procedures in Brazil, stratified by body weight, based on data collected in a single tertiary referral public hospital of Rio de Janeiro city.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This descriptive, cross\u2010sectional study included 928 diagnostic fluoroscopy examinations performed in patients aged 0\u201318 years between December 2020 and December 2024 at a national pediatric referral center. Dosimetric parameters such as Air kerma\u2010area product (PKA), Air kerma at patient entrance reference point (Ka,r), fluoroscopy time, and number of images were extracted from automatically generated reports. Results were compared with existing international DRLs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Local median doses showed overall agreement with European and UK reference levels in lower weight and age groups, but higher values were observed in patients with higher body mass. Compared with other single\u2010center studies, local KAP values were higher, likely reflecting differences in case complexity and exposure parameters. Weight\u2010based stratification proved more reliable than age\u2010based grouping for defining pediatric DRLs, supporting its use as the preferred reference criterion.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This is the first Brazilian study to systematically report DRLs for diagnostic pediatric fluoroscopy using weight\u2010based stratification, that support the need for structured dose monitoring, protocol optimization, and continuous professional training.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/acm2.70508","type":"journal-article","created":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T02:54:05Z","timestamp":1773629645000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Local diagnostic reference levels for pediatric fluoroscopy in a Brazilian tertiary referral center: A weight\u2011based analysis"],"prefix":"10.1002","volume":"27","author":[{"given":"Claudia M. 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