128层螺旋CT对冠状动脉狭窄的诊断价值分析

Diagnostic value of 128-slice spiral CT in coronary artery stenosis

目的分析128层螺旋CT对冠状动脉狭窄的诊断价值。方法选取疑似冠心病患者120例进行研究。120例患者先后行128层螺旋CT与冠状动脉造影检查，分析128层螺旋CT的诊断价值。结果与冠状动脉造影比较，对120例患者采用128层螺旋CT诊断的敏感度为95．49％、特异度为63．46％、准确度为86．49％；诊断冠脉闭塞的敏感度、特异度、准确度为100．00％、91．21％、91．35％；诊断重度狭窄的敏感度、特异度、准确度为38．46％、93．08％、85．41％；诊断中度狭窄的敏感度、特异度、准确度为82．26％、93．50％、89．72％；诊断轻度狭窄的敏感度、特异度、准确度为83．67％、96．32％、92．97％；诊断无明显狭窄的敏感度、特异度、准确度为88．89％、100．00％、97．30％。结论128层螺旋CT诊断冠状动脉狭窄的敏感度和准确度较高，且判读冠状动脉不同狭窄程度均有较高的准确性，是一种安全可行、简单可靠的无创检查方法，有利于院前对冠心病高危人群的筛查，避免冠脉造影的过度使用。

Objective To study the diagnostic value of 128-slice spiral CT in coronary artery stenosis. Methods A total of 120 cases of suspected coronary heart disease were selected, the 120 cases received 128- slice spiral CT and coronary angiography and the diagnostic value of 128- slice spiral CT was observed. Results Compared with coronary angiography for the 120 patients, the sensitivity of 128- slice spiral CT was 95.49%, the specificity was 63.46%, and the accuracy was 86.49%. In the diagnosis of coronary artery occlusion, the sensitivity, specificity and accuracy were 100%, 91.21%, 91.35% ; in the diagnosis of severe stenosis, the sensitivity, specificity and accuracy were 38.46%, 93.08%, 85.41% ; in the diagnosis of moderate stenosis, the sensitivity, specificity and accuracy were 82. 26%, 93.50%, 89. 72% ; in the diagnos of mild stenosis, the sensitivity, specificity and accuracy were 83.67%, 96. 32%, 92.97% ; in the diagnosis of no obvious stenosis, the sensitivity, specificity and accuracy were 88.89%, 100%, 97.30%. Conclusions The sensitivity and accuracy of 128 - slice spiral CT in the diagnosis of coronary artery stenosis are higher, and the accuracy of coronary artery ste- nosis is high. It is a safe, feasible, simple and reliable noninvasive examination method. It is helpful for pre-hospital screening of high-risk population with coronary heart disease and avoiding the excessive use of coronary angiography.