目的 对照分析CT冠状动脉成像 与冠状动脉造影对冠心病的临床诊断价值 差异。方法 选取我院于2012年4月-2015 年3月收治的94例拟诊冠心病患者为研 究对象,均予以CT冠状动脉成像(CTA)与 冠状动脉造影(CAG)检查，以CAG为“金 标准”评估有效节段内CTA 的特异性、 敏感性、准确性、误诊率及漏诊率。 结果 ①94例患者共评估血管1034段， CTA诊断结果同CAG一致的血管共977段 (94.5%)，不相符的血管共57段(5.5%)； ②CTA的诊断特异性为93.9%(155/165)， 敏感性为94.7%(832/879)，准 确性为95.5%(987/1034)，漏诊 率为4.5%(47/1034)，误诊率为 1.0%(10/1034)。结论 CTA具有理想的无 创性、操作性及便捷性，临床可将其作为 早期筛查冠心病的有效方式，对CTA检查 呈阳性者予以CAG检查以缩短诊疗时间、 节省诊疗成本、提高诊疗有效性及准确 性，确保针对性治疗工作的顺利开展。

Objective To comparatively analyze the clinical diagnostic value of CT coronary angiography and coronarography in the diagnosis of coronary artery disease. Methods 94 cases of patients with suspected coronary heart disease admitted into the hospital from April 2012 to March 2015 were selected as the research object and were examined by CT coronary angiography (CTA) and coronarography (CAG). With CAG as thegold standard, the specificity, sensitivity, accuracy, the rates of misdiagnosis and missed diagnosisof CTA in the effective segment were assesed. Results ①There were 1034segments of blood vessels evaluated in 94 patients. There were a total of 977 segments (94.5%) of vessels in the results of CTA diagnosis consistent with CAG and 57 segments not (5.5%). ② The specificity diagnosed by CTA was 93.9% (155/165), the sensitivity 94.7% (832/879), the accuracy 95.5% (987/1034), the rate of misdiagnosis 4.5% (47/1034) and misdiagnosis1.0% (10/1034). Conclusion CTA is ideally noninvasive with operability and convenience. In clinic, it can be taken as an effective way of early screening of coronary artery disease (CAD). For patients with positive CT angiography (CTA), to treat themwith CAG can shorten the treatment time and save the cost of diagnosis and treatment, improve the effectiveness and accuracy of diagnosis and treatment and ensure that the treatment can be carried out smoothly.