{"title":"Radiation exposure reduction using an equalization filter during percutaneous coronary intervention: a preliminary study.","authors":"Nao Ichikawa, Atsushi Fukuda, Takuma Hayashi, Yosuke Hattori, Kosuke Matsubara","doi":"10.1093/rpd/ncaf062","DOIUrl":null,"url":null,"abstract":"<p><p>This study aimed to evaluate radiation exposure reduction in patients and physicians with an equalization filter (EF) in percutaneous coronary intervention. An anthropomorphic phantom was placed on the examination table in the interventional fluoroscopy system. An ionization chamber was attached to the X-ray tube to measure the X-ray output. A solid-state survey meter was placed at the physician's position. EF positions were defined as 'Shallow', 'Deep', 'Both', 'Right', and 'Left'. The X-ray output and H*(10) with and without EFs were measured at 80-160 cm increments of 20 cm with 10 C-arm angulations. The air kerma was almost identical with and without EFs. The EF reduced kerma-area product and H*(10) by a maximum of 27.4%. The average H*(10) reduction of 'Deep' was larger than that of 'Shallow' in order of 'Both' > 'Left' > 'Right'. EFs contribute to reducing patient and physician exposure while maintaining X-ray output.</p>","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation protection dosimetry","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1093/rpd/ncaf062","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
This study aimed to evaluate radiation exposure reduction in patients and physicians with an equalization filter (EF) in percutaneous coronary intervention. An anthropomorphic phantom was placed on the examination table in the interventional fluoroscopy system. An ionization chamber was attached to the X-ray tube to measure the X-ray output. A solid-state survey meter was placed at the physician's position. EF positions were defined as 'Shallow', 'Deep', 'Both', 'Right', and 'Left'. The X-ray output and H*(10) with and without EFs were measured at 80-160 cm increments of 20 cm with 10 C-arm angulations. The air kerma was almost identical with and without EFs. The EF reduced kerma-area product and H*(10) by a maximum of 27.4%. The average H*(10) reduction of 'Deep' was larger than that of 'Shallow' in order of 'Both' > 'Left' > 'Right'. EFs contribute to reducing patient and physician exposure while maintaining X-ray output.
期刊介绍：
Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.
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