Journal of the Korean Society of Radiology (한국방사선학회논문지)

The Korean Society of Radiology (한국방사선학회)
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Evaluate the diagnostic accuracy in the assessment of coronary artery stenoses using MDCT

MDCT를 이용한 관상동맥협착 진단의 정확성 평가

  • Yang, Won-Seok (Department of Radiology, Dong-A University Hospital) ;
  • Sin, Sung-Gyu (Department of Radiology, Dong-A University Hospital) ;
  • Park, Jae-Hong (Dept. Radiological Technology, Choonhae College of Health Science)
  • 양원석 (동아대학교 의료원 영상의학실) ;
  • 신성규 (동아대학교 의료원 영상의학실) ;
  • 박재홍 (춘해보건대학교 방사선과)
  • Received : 2012.05.11
  • Accepted : 2012.08.14
  • Published : 2012.08.30
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Abstract

Methods and results : The suspected patient who have results of CTA and CAG examinations to evaluate coronary stenose to undergo each 16MD CT(n=93) and dual source CT(n=100). As a results of statistic, the highest rank of sensitivity, specificity, PPV, NPV and accuracy in coronary artery with using 16MDCT was displayed in LAD(73.5%), RCA(74.5%), LAD(66.7%), LCX(75%), LCX(67.7%). The mean diagnostic accuracy of dual source CT was more 17% than 16MDCT. Dual source CT was recorded 84% mean of accuracy. In addition to, segments of coronary artery did not show significant differences in all of them. However, distal segment become more and more accurate than proximal site.

16MD CT(n=93) and dual source CT(n=100)를 이용해 촬영된 심장 CT 중 그 결과 협착으로 진단되어 심장영화 촬영을 시행한 환자를 대상으로 심장영화 촬영과의 협착 유무에 대한 비교를 하였다. 그 결과 16MDCT의 경우 가장 높은 민감도, 특이도, 양성예측도, 음성예측도는 LAD(73.5%), RCA(74.5%), LAD(66.7%), LCX(75%), LCX(67.7%)로 나타났고, 16Slice MDCT에서 각 관상동맥 혈관별 정확도는 평균67%로 다소 떨어지는 것으로 나타났고, Somatom Definition dual source CT의 경우 평균 정확도 84%로 16Slice MDCT보다는 17%더 높은 정확도를 나타내었다. 관상동맥영역별(segaments) 구분에서는 16Slice MDCT와 Somatom Definition 모두 근위부(proximal)보다는 원위부로 갈수록 더 높은 정확도를 나타내었다. 하지만 그 결과 값이 10% 오차 범위 내에 있어 명확한 차이라 보기는 힘들 것 이다. 또한 Dual source CT의 경우 역시 관상동맥 영역별 구분에서 큰 차이를 보이지 않았다.

Keywords

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