Comparison of electron beam computed tomography with intracoronary ultrasound and coronary angiography for detection of coronary atherosclerosis

被引:220
作者
Baumgart, D
Schmermund, A
Goerge, G
Haude, M
Ge, JB
Adamzik, M
Sehnert, C
Altmaier, K
Groenemeyer, D
Seibel, R
Erbel, R
机构
[1] UNIV WITTEN HERDECKE,MUELHEIM RADIOL INST,WITTEN,GERMANY
[2] RUHR UNIV BOCHUM,INST DEV & RES MICROTECHNOL,D-4630 BOCHUM,GERMANY
关键词
D O I
10.1016/S0735-1097(97)00147-2
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Objectives. This analysis compared the results of electron beam computed tomography (EBCT) with those of coronary angiography and intracoronary ultrasound (ICUS) for the in vivo detection of coronary atherosclerotic plaques. Background. EBCT is a new imaging modality for identification of coronary calcifications. Coronary angiography depicts advanced changes in coronary morphology, whereas ICUS is an established diagnostic tool that detects the early stages of coronary artery disease. Methods. In 57 patients (54 +/- 9 years old), 267 coronary segments were analyzed with EBCT (3-mm slices, acquisition time 100 ms, threshold definition of coronary calcification at 130 Hounsfield units in an area greater than or equal to 1 mm(2), Agatston calcium score), coronary angiography and ICUS. The analysis was based on the number and extent of coronary calcifications on EBCT, coronary lumen reduction on coronary angiography and plaque formation with and without ultrasound signs of calcifications on ICUS. Results. Compared with coronary angiography, EBCT yielded a sensitivity of 66%, a specificity of 78%, a positive predictive value of 39% and a negative predictive value of 91%. Compared with ICUS, EBCT yielded an overall sensitivity of 66%, a specificity of 88% and an overall accuracy of 81%. For plaques with and without ultrasound signs of calcifications, the sensitivity of EBCT was 97% and 47%, specificity 80% and 75% and overall accuracy 82% and 69%, respectively. Conclusions. This in vivo correlation between ICUS and EBCT demonstrates that EBCT is a noninvasive method that helps to visualize the atherosclerotic process by localization and quantification of coronary artery calcifications. EBCT detects calcified plaques with high accuracy. Plaques without ultrasound signs of calcifications can be detected by EBCT but with lower sensitivity but equivalent specificity. (C) 1997 by the American College of Cardiology.
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页码:57 / 64
页数:8
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