64层螺旋CT冠状动脉成像对冠状动脉狭窄的诊断价值

The clinical value of 64-slice CT angiography in the diagnosis of coronary artery stenosis

目的 探讨64层螺旋CT冠状动脉成像在冠状动脉狭窄中的诊断价值.方法 采用选择性冠状动脉造影（CAG）与64层螺旋CT（64SCT）对60例疑似冠心病患者进行检查,对比两种方法检查结果,并以CAG为金标准检验64SCT对冠状动脉狭窄的诊断价值.结果 64SCT扫描能清晰辨认并满足诊断要求的节段数（458）显著少于CAG（504）（x2=20.1318,P＜0.01）；CAG确诊冠心病38例,64SCT诊断为冠心病者37例,差异无统计学意义（P＞0.05）；64SCT对各节段血管病变的检出敏感度为93.4％,特异度为96.0％,阳性预测值为88.0％,阴性预测值为97.9％.结论 与CAG有创检查相比,64SCT对冠状动脉狭窄的诊断仍具有较高价值,具有较高的诊断敏感性、特异性及阳性、阴性预测值,值得用于该病的早期筛查.

Objective To discuss the clinical value of 64-slice CT angiography in the diagnosis of coronary artery stenosis. Methods 60 patients with suspected coronary artery disease were examined by CAG and 64SCT, then we contrasted the results,and diagnostic value of 64SCT in coronary artery stenosis was tested by CAG as the gold standard. Results The number of coronary section could clearly show in 64SCT（458 ） were significantly more than in the CAG（504） （X2 =20. 1318,P 〈0.01 ） ;but there was no significant difference in the diagnosis rates of coronary heart disease between the two methods（P 〉 0.05 ） ;the sensitivity of 64SCT in coronary artery disease was 93.4% , specificity 96.0%, positive predictive value of 88.0%, and negative predictive value of 97.9%. Conclusion Com- pared with CAG deficiencies in the diagnosis of coronary artery stenosis,64SCT has higher value. , and it has high sen- sitivity, specificity, positive and negative predictive value in the diagnosis of coronary artery stenosis, and which is wor- thy of early screening for the disease.