{"title":"儿童脑部计算机断层扫描对眼晶状体辐射剂量的系统回顾。","authors":"Amanda Alison Perdomo, Jake Cameron Forster, Mohamed Khaldoun Badawy","doi":"10.1007/s00247-025-06371-7","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>With the increasing use of pediatric brain computed tomography (CT) and the International Commission on Radiological Protection's revised threshold for radiation-induced lens opacities, concerns have grown regarding cumulative radiation exposure to the eye lens.</p><p><strong>Objective: </strong>This review examines the magnitude of lens doses reported in pediatric brain CT and the methodologies used to estimate these doses.</p><p><strong>Methods: </strong>A systematic literature search of MedLine, Embase, and PubMed (2012-2024) identified 18 eligible studies, including direct patient measurements, phantom-based experiments, and computational modeling.</p><p><strong>Results: </strong>Reported lens doses varied widely across studies. Software-based tools generally estimate higher doses than those measured directly on patients or phantoms. Multiple dose-reduction strategies such as gantry tilting, organ-based tube current modulation, and protocol optimization were effective in significantly lowering lens exposure without compromising diagnostic quality.</p><p><strong>Conclusion: </strong>In all cases, individual scan doses remain below the cataractogenic threshold. However, children undergoing repeated imaging may exceed this limit over time. Cumulative lens dose tracking and routine implementation of orbit-sparing techniques are recommended to reduce long-term radiation risk in vulnerable pediatric populations.</p>","PeriodicalId":19755,"journal":{"name":"Pediatric Radiology","volume":" ","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A systematic review of radiation dose to the eye lens from pediatric brain computed tomography scans.\",\"authors\":\"Amanda Alison Perdomo, Jake Cameron Forster, Mohamed Khaldoun Badawy\",\"doi\":\"10.1007/s00247-025-06371-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>With the increasing use of pediatric brain computed tomography (CT) and the International Commission on Radiological Protection's revised threshold for radiation-induced lens opacities, concerns have grown regarding cumulative radiation exposure to the eye lens.</p><p><strong>Objective: </strong>This review examines the magnitude of lens doses reported in pediatric brain CT and the methodologies used to estimate these doses.</p><p><strong>Methods: </strong>A systematic literature search of MedLine, Embase, and PubMed (2012-2024) identified 18 eligible studies, including direct patient measurements, phantom-based experiments, and computational modeling.</p><p><strong>Results: </strong>Reported lens doses varied widely across studies. Software-based tools generally estimate higher doses than those measured directly on patients or phantoms. Multiple dose-reduction strategies such as gantry tilting, organ-based tube current modulation, and protocol optimization were effective in significantly lowering lens exposure without compromising diagnostic quality.</p><p><strong>Conclusion: </strong>In all cases, individual scan doses remain below the cataractogenic threshold. However, children undergoing repeated imaging may exceed this limit over time. Cumulative lens dose tracking and routine implementation of orbit-sparing techniques are recommended to reduce long-term radiation risk in vulnerable pediatric populations.</p>\",\"PeriodicalId\":19755,\"journal\":{\"name\":\"Pediatric Radiology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Pediatric Radiology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1007/s00247-025-06371-7\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PEDIATRICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pediatric Radiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00247-025-06371-7","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PEDIATRICS","Score":null,"Total":0}
A systematic review of radiation dose to the eye lens from pediatric brain computed tomography scans.
Background: With the increasing use of pediatric brain computed tomography (CT) and the International Commission on Radiological Protection's revised threshold for radiation-induced lens opacities, concerns have grown regarding cumulative radiation exposure to the eye lens.
Objective: This review examines the magnitude of lens doses reported in pediatric brain CT and the methodologies used to estimate these doses.
Methods: A systematic literature search of MedLine, Embase, and PubMed (2012-2024) identified 18 eligible studies, including direct patient measurements, phantom-based experiments, and computational modeling.
Results: Reported lens doses varied widely across studies. Software-based tools generally estimate higher doses than those measured directly on patients or phantoms. Multiple dose-reduction strategies such as gantry tilting, organ-based tube current modulation, and protocol optimization were effective in significantly lowering lens exposure without compromising diagnostic quality.
Conclusion: In all cases, individual scan doses remain below the cataractogenic threshold. However, children undergoing repeated imaging may exceed this limit over time. Cumulative lens dose tracking and routine implementation of orbit-sparing techniques are recommended to reduce long-term radiation risk in vulnerable pediatric populations.
期刊介绍：
Official Journal of the European Society of Pediatric Radiology, the Society for Pediatric Radiology and the Asian and Oceanic Society for Pediatric Radiology
Pediatric Radiology informs its readers of new findings and progress in all areas of pediatric imaging and in related fields. This is achieved by a blend of original papers, complemented by reviews that set out the present state of knowledge in a particular area of the specialty or summarize specific topics in which discussion has led to clear conclusions. Advances in technology, methodology, apparatus and auxiliary equipment are presented, and modifications of standard techniques are described.
Manuscripts submitted for publication must contain a statement to the effect that all human studies have been reviewed by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in an appropriate version of the 1964 Declaration of Helsinki. It should also be stated clearly in the text that all persons gave their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study should be omitted.
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