目的 探讨多层螺旋CT冠脉成像 (MSCTCA)在评估冠脉狭窄病变中的价值。 方法 63例拟诊为冠心病患者1个月内同时 行MSCTCA和冠状动脉造影(CAG)检查，对 比检查结果。结果 以CAG为“金标准”， MSCTCA诊断冠状动脉病变准确率92.06%， 敏感性为95.45%，特异性为84.21%，与 CAG的一致性非常好(Kappa=0.834)；63例 共计945段冠状动脉血管阶段，907段可进 行评价，MSCTCA诊断冠状动脉狭窄程度的 符合率为92.94%，与CAG诊断符合率一致 性较好(Kappa=0.517)；诊断无狭窄、轻 度狭窄、中度狭窄、重度狭窄的准确率分 别为93.75%、82.86%、90.28%、92.97%。 结论 MSCTCA诊断冠状动脉狭窄及狭窄程 度的准确率较高。

Objective To explore the value of multi-slice spiral CT coronary angiography (MSCTCA) in the evaluation of coronary artery stenosis. Methods 63 cases of patients diagnosed with coronary heart disease underwent MSCTCA and coronary angiography (CAG) at the same time in 1 month. The examination results were compared. Results With CAG as the golden standard, the accuracy, sensitivity and specificity of MSCTCA in diagnosis of coronary artery disease were 92.06%, 95.45% and 84.21%, respectively. The consistency with CAG was very good (Kappa=0.834); 63 cases were with a total of 945 coronary artery segments and 907 segments can be evaluated. The coincidence rate of MSCTCA in diagnosis of coronary artery stenosis degree was 92.94%, and the diagnostic compliance rate with CAG was good (Kappa=0.517); The accuracy rates in the diagnosis of no stenosis, mild stenosis, moderate stenosis and severe stenosis were 93.75%, 82.86%, 90.28% and 92.97%, respectively. Conclusion The accuracy rate of MSCTCA in the diagnosis of coronary artery stenosis and stenosis degree is relatively higher