Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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Evaluation of the X-ray Shielding Ability of Lead Free Board Shielding in the CT Room

CT실에서 무연보드 차폐체의 X선 차폐능력 평가

  • 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)
  • 김성준 (고려대학교 안암병원 영상의학과) ;
  • 한태호 ((주)선일쉴드텍 방사선보건안전연구소) ;
  • 이효원 (고려대학교 안암병원 영상의학과) ;
  • 오유환 (고려대학교 안암병원 영상의학과) ;
  • 김승철 (신한대학교 방사선학과) ;
  • 김정민 ((주)선일쉴드텍 방사선보건안전연구소)
  • Received : 2024.06.17
  • Accepted : 2024.07.11
  • Published : 2024.08.31
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Abstract

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

Keywords

Acknowledgement

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)

References

  1. Valentin J. Radiation and your patient: A guide for medical practitioners. Bethesda, MD: Annals of the ICRP; 2001. DOI: https://doi.org/10.1016/S0146-6453(02)00007-6
  2. Kim HC, Jang HJ, Chae WJ. Choi WJ, Han BJ. Evaluation and management of lead exposure. Annals of Occupational and Environmental Medicine. 2015; 7(30):1-9. DOI: https://doi.org/10.1186/s40557-015-085-9
  3. Allonneau A, Mercier S, Maurin O, Robardet F, Louyot C, Jacques N, et al. Lead contamination among Paris fire brigade firefighters who fought the Nortre Dame Cathedral fire in Paris. International Journal of Hygiene and Environmental Health. 2021;233(7): 7-76. DOI: https://doi.org/10.1016/j.ijheh.2021. 137078
  4. Raj K, Das A. Lead pollution: Impact on environmental and human health and approach for a sustainable solution. Environmental Chemistry and Ecotoxicology. 2023;5:79-85. DOI: https://doi.org/0.1016/j.enceco.2023.02.001 1016/j.enceco.2023.02.001
  5. Kim SC, Dong KR, Chung WK. Medical radiation shielding effect by composition of barium compounds. Annals of Nuclear Energy. 2021;47:1-5. DOI: https://oi.org/10.1016/j.anucene.2012.04.014
  6. Kim SJ, Park HM, Na CY, Han TH, Kim SC. Developement and performance evaluati on of eco-friendly X-ray shields using BaSO4. Journal of Radiation Industry. 2020;14(10):13-8. Retrieved from https://www.ksri.kr/0304/view/field/eNortjK0UjJUsgZcMAkYAck./keyword/eNortjI0slJ6O3Plm6YNrzdMeb10hZI1XDBlEQp-/id/3639 10hZI1XDBlEQp-/id/3639
  7. Kwon KY, Cho SJ, Gil JY, Jang JW, Jung JY, Song SK, et al. Current status of national medical radiation use 2020~2022. Korea Disease Control and Prevention Agency [Internet]. 2024 [cited 2024 Feb 19]. Retrieved from https://www.kdca.go.kr/gallery.es?mid=a20503010000&bid=0002&list_no=146478&act=view.
  8. Obchowski N, Bullen J. Receiver operating characteristic curves and their use in radiology. Radiology. 2003;229(1):3-8. DOI: https://doi.org/10.1148/radiol.291010898
  9. Lee HM, Kim HS, Cho NS, Cho SO. Effect of back scatter radiaton on CR image. Korean Journal of Digital Imaging in Medicine. 1996;2(1):68-72. Retrieved from https://scienceon.kisti.re.kr/commons/util/originalView.do?cn=JAKO199631559902579&oCn=JAKO199631559902579&dbt=JAKO&journal=NJOU00416081
  10. Pierluigi C, Luigi C, Breglio G, Buontempo S, Cusano A, Cutolo A. Real time dosimetry with radiochromic film. Scientific Reports. 2019;9(5307):1-11. DOI: https://doi.org/10.1038/s41598-019-41705-0
  11. Katoh Y, Tsukata M, Mita S, Fukushi M, Nyui Y, Abe S, et al. Shielding evaluation of lead-free boards for diagnostic X-ray. Japanese Society of Radiological Technology. 2010;66(12):1555-60. DOI: https://doi.org/10.6009/jjrt.66.1555
  12. Esen Y, Yirmazer B. An investigation of X-ray and radio isotope energy absorption of heavyweight concretes containing barite. Bulletin of Material Science. 2011;34(1):169-75. DOI: https://doi.org/10.1007/s12034-011-0028-1
  13. Fukuda A, Lin P, Ichikawa N, Matsubara K. Estimation of primary radiation output for wide-beam computed tomography scanner. Journal of Applied Clinical Medical Physics. 2019;20(6):152-9. DOI: https://doi.org/10.1002/acm2.12598.
  14. Kim KJ, Shim JG. A Study on the shielding element using Monte Carlo simulation. Journal of Radiological Science and Technology. 2011;40(2):187-95. DOI: https://doi.org/10.17946/JRST.2017.40.2.12
  15. Jeong HW, Min JH. Development and performance comparison of silicon mixed shielding material. Journal of Radiological Science and Technology. 2023;46(3):187-95. DOI: https://doi.org/10.17946/JRST.2023.46.3.187
  16. Ko DY, Jung YJ, Choi HJ, Kim HS, Lee HG, Lee KY, et al. A study on guidance for test and methods of radiation protection. Osong: Radiation Safety Management Series; 2012. Retrieved from https://www.mfds.go.kr/brd/m_218/list.do
  17. Harrison JD, Balonov F, Bochud F, Menzel C, Lopez O, Smith-bindson R. Structure of shielding design for medical X-ray image facilities. Bethesda, MD: ICRP Report 147; 2012. Retrieved from https://ncrponline.org/publications/reports/ncrp-reports-14718.
  18. Kim BE. Clinical application of eco-friendly lead-free board as a lead replacement in medical radiation protection facilities [master's thesis]. Seoul: Korea University; 2023. Retrieved from https://dcollection.korea.ac.kr/public_resource/pdf/000000278044_20240702015016.pdf
  19. Kim GH, Kim DH, Kim MK, Kim MK, Kim YM. Protective devices against medical X-radiation (KS C IEC 61331-3). Seoul: Korean Industrial Standards; 2022. Retrieved from https://standard.go.kr/streamdocs/view/sd;streamdocsId=72622263844274786