中文摘要：

目的：探讨128层螺旋CT（SCT）在冠状动脉狭窄诊断中的临床应用价值.材料与方法：对临床怀疑或诊断冠心病的104例患者行128层SCT冠状动脉成像检查（CTA）并评价冠状动脉狭窄程度.对有意义（＞50％）的患者行导管法冠状动脉数字减影检查（DSA）,并与CTA评价结果进行比较.结果：26例患者CTA未见明显狭窄,42例轻度狭窄,17例中度狭窄,19例重度狭窄及闭塞,共检出30例（28％）心肌桥;47例患者行导管法DSA,共检出9例（19％）心肌桥,其中6例患者CTA评价狭窄程度较DSA偏轻.结论：128层螺旋CTA对冠状动脉狭窄的诊断准确性较高,可用于冠状动脉狭窄的初步诊断和介入治疗的筛选.

英文摘要：

Purpose： To evaluate the value of 128-slices spiral CT coronary angiography（CTA） in diagnosing coronary artery stenoses. Materials and Methods： A total of 104 patients with known or suspected coronary artery disease were exam- ined by CTA and the results were compared with the method of coronary digital subtracting angio-graphy（DSA）. Results： 26 cases of no stenosis, 42 cases of mild stenosis, 17 cases of moderate stenosis and 19 cases of severe stenosis or occlusion and 30 cases （28%） of myocardial bridge, were shown in CTA. After being examined by CTA, 47 cases of them were underwent and 9 cases （ 19% ） of myocardial bridge were found by DSA, in which the evaluation of degree of coranary stenosis in 6 cases were lower in CTA than that in DSA. Conclusion： 128-slices spiral CT permits the visualization of significant coronary artery stenosis with high accuracy in case of sufficient image quality.