128层螺旋CT冠状动脉成像技术在冠心病诊断中的临床应用

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。

The Clinical Application of Coronary Angiography with 128-slices Spiral CT

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.