{"title":"Cost-effective shielding design based on the dose length product method for shielding calculations in X-ray computed tomography systems.","authors":"Kimiya Noto, Wataru Mitsui, Tadanori Takata, Hironori Kojima, Kosuke Matsubara, Ichiro Yamaguchi","doi":"10.1093/rpd/ncaf078","DOIUrl":null,"url":null,"abstract":"<p><p>In medical facilities, pre-shielding calculations are essential when introducing new X-ray equipment to protect the staff from radiation. For computed tomography (CT), the dose length product (DLP) method is commonly used for shielding calculations. This method allows the evaluation of the dose at any wall position. This study proposed a cost-effective design for CT room shielding, adjusting the material thickness based on the operator's exposure and the room's environment. Scattered radiation was measured using an optically stimulated luminescence dosemeter. The calculated values were 2.0 to 7.5 times higher than the measured values inside the CT room, confirming the accuracy of the DLP method in estimating the actual dose. No scattered radiation was detected outside the CT room. This study demonstrates that the DLP method enables pre-installation shielding calculations that balance cost and safety.</p>","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"795-801"},"PeriodicalIF":0.7000,"publicationDate":"2025-07-30","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/ncaf078","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
In medical facilities, pre-shielding calculations are essential when introducing new X-ray equipment to protect the staff from radiation. For computed tomography (CT), the dose length product (DLP) method is commonly used for shielding calculations. This method allows the evaluation of the dose at any wall position. This study proposed a cost-effective design for CT room shielding, adjusting the material thickness based on the operator's exposure and the room's environment. Scattered radiation was measured using an optically stimulated luminescence dosemeter. The calculated values were 2.0 to 7.5 times higher than the measured values inside the CT room, confirming the accuracy of the DLP method in estimating the actual dose. No scattered radiation was detected outside the CT room. This study demonstrates that the DLP method enables pre-installation shielding calculations that balance cost and safety.
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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