摘要
Abstract
Objective To evaluate the diagnostic value of MSCT for coronary artery stenosis.Methods 35 suspicious CHD patients were detected with coronary MSCT and CAG.According to the results of CAG, the quantity of coronary artery MSCT was evaluated by four-grade classification.The sensitivity, specificity and accuracy of MSCT for the examination were analyzed and compared with the results of CAG.The plaque characteristics were differentiated according to the CT data in the images.And relationship between the plaque characteristics and stenosis degreewere analyzed.Results In 291 coronary arteries, 242 were evaluated(83.2％ ).In 11 patients (31.4％), all arteries were be evaluated.The sensitivity of stenosis detected by MSCT≥50％ was 88.6％, specificity was 97.1％, positive predictive value was 83.8％, and negative predictive value was 98.0％.The atherosclerotic plaque characteristics were related to the degree of stenosis, and the degree of stenosis induced by simple calcified plaque was lower than those induced by non-calcified and mixed plaque , and the difference was significant( P ＜ 0.01 ), but there was no significant difference between non-calcified and mixed plaques( P ＞ 0.05 ).Conclusion MSCT has a high diagnosis value on coronary artery stenosis if image quality is satisfactory.The judgment of the atherosclerotic plaque characteristics may be helpful in raising the accuracy rate of MSCT coronary angiography.关键词
冠状动脉狭窄/体层摄影术,螺旋计算机/冠状血管造影术Key words
Coronary stenosis/ Tomography, spiral computer/ Coronary angiography/ Comparative study分类
医药卫生
