目的 研究CTA对糖尿病患者冠 状动脉狭窄的诊断价值。方法 选取我院 2012年3月至2015年9月134例糖尿病患 者为研究对象，采用CTA和冠状动脉造 影检查，以冠状动脉造影为金标准，评 估冠状动脉狭窄程度。结果 CTA诊断冠 状动脉狭窄程度≥50%的诊断敏感性为 95.97%，特异性为92.42%，阳性预测值 为92.94%，阴性预测值为90.37%，准确 率为92.74%，Kappa值为0.85。结论 CTA 对冠状动脉狭窄的显示具有较高的准确 性，是诊断糖尿病患者冠状动脉病变可 靠、无创的检查方法。

Objective To study the diagnostic value of CTA diagnosing the diabetic patients with coronary stenosis. Methods 134 cases of diabetic patients admitted and treated in our hospital during March 2012 and September 2015 were selected as the study objectives. All patients were given CTA and coronary arteriography. And the results of coronary arteriography were taken as the golden standard to evaluate the degree of coronary stenosis. Results The sensitivity of diagnosis for the degree of coronary stenosis (≥50%) diagnosed through CTA was 95.97%, the specificity was 92.42%, the positive predictive value was 92.94% ,the negative predictive value was 90.37%, the accuracy rate was 92.74% and the Kappa value was 0.85. Conclusion CTA is highly accurate in revealing the coronary stenosis. Thus, CTA is a reliable and noninvasive examination in diagnosing the diabetic patients with coronary stenosis.