CT联合MRI在评估CAD患者左心功能中的应用价值

The Clinical Value of Evaluating Left Ventricular Function in Patients with CAD Using CT and MRI

本文探讨多排CT(MDCT)、心脏磁共振成像(CMRI),以及二者联合评估冠心病(CAD)患者左心功能的临床应用价值。对93例CAD患者进行MDCT及CMRI检查,计算舒张末期容积(EDV)、收缩末期容积(ESV)、每搏输出量(SV)、射血分数(EF),并分析两种检查方式间各指标的相关性及一致性。93例CAD患者中心绞痛21例、心肌梗死72例,心肌梗死患者根据临床症状及查体进行Killip分级,比较各级间CT及MRI对心功能评估的差异。结果显示,MDCT与CMR相比,两检查结果间相关性较强,对左心室功能评估的一致性较高。二者对CAD患者左心功能受损的诊断价值均较高(AUC>0.79)。并联试验对CAD患者心功能受损的诊断准确度可达将近80%。MDCT和CMRI诊断CAD患者左心功能受损情况有较高的敏感性、特异性和准确性。

The clinical value of computed tomography,magnetic resonance imaging and the combined testing in assessment of left ventricular function in patients with coronary artery disease(CAD)is discussed in this article.93 patients with known CAD were enrolled,all these patients had been scanned with cardiac MDCT and MRI.End-diastolic volume(EDV),end-systolic volume(ESV),stroke volume(SV)and ejection fraction(EF)were calculated.Among these patients,21 had angina and 72 had myocardial infarction.Patients with myocardial infarction were graded using Killip classification according to clinical symptoms and physical examination,and the differences in CT and MRI assessment of cardiac function between different levels were analyzed.The results showed that there were strong correlations between MDCT and CMR results,and there was a high consistency in the assessment of left ventricular function.MDCT and CMRI have a high value of diagnostic in CAD patients with left heart impaired(AUC>0.79),and the diagnostic accuracy of the parallel test for CAD patients with impaired cardiac function was nearly 80%.MDCT and CMRI have a high sensitivity,specificity and accuracy in diagnosing patients with left heart impaired.