Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Analysis of Attenuation Differences According to Radiolucent and Radiopague Materials : Based on DECT (Dual Energy Computed Tomography)

방사선 투과 및 불투과성 물질에 따른 감약 차이의 분석 : DECT 검사 중심으로

  • Jang, Hyon-Chol (Department of Radiological Technology, Suseong College) ;
  • Kim, Yoon-Shin (Department of Health Science, Graduate School Hanyang University) ;
  • Kim, Hyeon-Ju (Department of Radiology, Soonchunhyang University Bucheon Hospital)
  • 장현철 (수성대학교 방사선과) ;
  • 김윤신 (한양대학교 대학원 보건학과) ;
  • 김현주 (순천향대학교 부천병원 영상의학과)
  • Received : 2013.10.24
  • Accepted : 2014.03.06
  • Published : 2014.03.31
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Abstract

This study analyzed CT values of radiolucent and radiopaque materials by energy region after selecting radiolucent and radiopaque materials at random using GE's DECT((Dual Energy Com-puted Tomography) at S University Hospital located in Gyeonggi-province from July through August in 2013. Besides, it drew out the most analogous energy region to the value of 120kVp CT, which is applied to existing SECT(Single Energy Computed Tomography), by utilizing the analysis method of CT values and tried to find out the most useful and appropriate materials when contrast was applied within visible area in clinical application. As a result, there was little decrease of CT value after 90KeV in the case of materials with low density and high moisture content such as normal saline, methyl-cellulose and gels used in ultra-sonic waves test; energy does not influence much on materials with extremely low or high density such as air and contrast medium; methyl-cellulose and gels used in ultra-sonic waves test are considered to be the most useful materials for clinical applications.

본 연구는 경기도 소재 S 대학병원에서 2013년 7월부터 8월까지 GE 사의 DECT(Dual Energy Computed Tomography)를 이용하여 방사선 투과 및 불투과성 물질을 임의로 선정, 에너지 영역 대별로 투과 및 불투과성 물질의 CT 값을 분석하였다. 또한, CT 값 분석 법을 이용하여 기존의 SECT(Single Energy Computed Tomography)에서 적용되는 120kVp CT 값과 가장 유사한 에너지 영역대를 도출하였으며 임상 적용 시 가시 영역 범위 내에서 대조도를 주었을 때 가장 유용하며 적절한 물질을 알아보았다. 결론으로 생리식염수, 메틸셀룰로스, 초음파용 젤과 같이 밀도가 낮고 수분 함유량이 많은 경우 90KeV 이후 CT 값의 감소가 거의 없었으며, 공기와 조영제처럼 밀도가 매우 낮거나 높은 물질의 경우 에너지의 영향을 적게 받는 것으로 분석되었으며 메틸셀룰로오스와 초음파 젤의 경우 임상 적용 시 가장 유용성이 있는 물질로 사료된다.

Keywords

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