{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T15:23:07Z","timestamp":1747149787097,"version":"3.40.5"},"reference-count":40,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,3,7]],"date-time":"2024-03-07T00:00:00Z","timestamp":1709769600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Medical Radiation Sci"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Concerns regarding the adverse consequences of radiation have increased due to the expanded application of computed tomography (CT) in medical practice. Certain studies have indicated that the radiation dosage depends on the anatomical region, the imaging technique employed and patient\u2010specific variables. The aim of this study is to present fitting models for the estimation of age\u2010specific dose estimates (ASDE), in the same direction of size\u2010specific dose estimates, and effective doses based on patient age, gender and the type of CT examination used in paediatric head, chest and abdomen\u2013pelvis imaging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 583 paediatric patients were included in the study. Radiometric data were gathered from DICOM files. The patients were categorised into five distinct groups (under 15\u2009years of age), and the effective dose, organ dose and ASDE were computed for the CT examinations involving the head, chest and abdomen\u2013pelvis. Finally, the best fitting models were presented for estimation of ASDE and effective doses based on patient age, gender and the type of examination.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The ASDE in head, chest, and abdomen\u2013pelvis CT examinations increases with increasing age. As age increases, the effective dose in head and abdomen\u2013pelvis CT scans decreased. However, for chest scans, the effective dose initially showed a decreasing trend until the first year of life; after that, it increases in correlation with age.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Based on the presented fitting model for the ASDE, these CT scan quantities depend on factors such as patient age and the type of CT examination. For the effective dose, the gender was also included in the fitting model. By utilising the information about the scan type, region and age, it becomes feasible to estimate the ASDE and effective dose using the models provided in this study.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jmrs.772","type":"journal-article","created":{"date-parts":[[2024,3,8]],"date-time":"2024-03-08T06:50:30Z","timestamp":1709880630000},"page":"251-260","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Introducing fitting models for estimating age\u2010specific dose and effective dose in paediatric patients undergoing head, chest and abdomen\u2013pelvis imaging protocols: a patient study"],"prefix":"10.1002","volume":"71","author":[{"given":"Mohammad Reza","family":"Deevband","sequence":"first","affiliation":[{"name":"Department of Medical Physics and Biomedical Engineering, Faculty of Medicine Shahid Beheshti University of Medical Sciences and Health Services  Tehran 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