대한방사선기술학회지:방사선기술과학 (Journal of radiological science and technology)

  • 제47권4호
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  • Pages.249-254
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  • 2024
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  • 2288-3509(pISSN)
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  • 2384-1168(eISSN)
대한방사선과학회 (Korean Society of Radiological Science)
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CT실에서 무연보드 차폐체의 X선 차폐능력 평가

Evaluation of the X-ray Shielding Ability of Lead Free Board Shielding in the CT Room

  • 김성준 (고려대학교 안암병원 영상의학과) ;
  • 한태호 ((주)선일쉴드텍 방사선보건안전연구소) ;
  • 이효원 (고려대학교 안암병원 영상의학과) ;
  • 오유환 (고려대학교 안암병원 영상의학과) ;
  • 김승철 (신한대학교 방사선학과) ;
  • 김정민 ((주)선일쉴드텍 방사선보건안전연구소)
  • Sung-Joon Kim (Department of Radiology, Korea University Anam Hospital) ;
  • Tae-Ho Han (Sunil Radiation Health Safety Laboratory) ;
  • Hyo-Won Lee (Department of Radiology, Korea University Anam Hospital) ;
  • Yu-Whan Oh (Department of Radiology, Korea University Anam Hospital) ;
  • Seung-Chul Kim (Department of Radiological Science, Shinhan University) ;
  • Jung-Min Kim (Sunil Radiation Health Safety Laboratory)
  • 투고 : 2024.06.17
  • 심사 : 2024.07.11
  • 발행 : 2024.08.31
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초록

This study compared the X-ray shielding abilities of the shields using Computed Radiography(CR) System after manufacturing a lead-free boards using gypsum and BaSO4, an eco-friendly X-ray shielding material. Total six lead-free boards were manufactured with BaSO4 concentrations of 25 %, 50 % and thickness of 10 mm, 15 mm, 20 mm respectively, and additional thickness of 1.0 mm, 1.5 mm, 2.0 mm leads were prepared. In the experiment, Nine shields were placed on the Image Plate and placed in a Computed Tomography(CT) Room where CT scans were performed for 2 weeks. After that, the X-ray image of the shields were obtained through CR Reader, and Pixel Value(PV) were measured to evaluated the X-ray shielding abilities of the lead-free shields. The criterion for evaluating the shields was determined by comparing PV of lead-free board to that of the 1.5 mm thickness lead used in the CT rooms. As a result of the experiment, the PV of the lead-free boards within 25 % of the BaSO4 concentration and within 10 mm of the thickness were not enough to be used as X-ray shields in the CT Room because they did not reach the PV of the 1.5 mm thickness lead. BaSO4 concentration of 50 % at 20 mm thickness showed PV of 1.5 mm lead thickness or more indicating that it has an X-ray shielding ability to replace lead in the CT room

키워드

과제정보

This study was conducted with the contributions of the Ministry of SMEs and Startups (RS-2023-00221448, Localization of lead replacement X-ray shielding material for radiation diagnosis device shielding facilities and shield facility construction method development) and a research project of the Korean Radiological Association for Public Health(2023-0069, A study on the establishment of design standards for shielding walls according to the number of patients per week in computed tomography)

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