心脏节段性室壁厚度变化在冠心病MRI诊断中的价值

探讨节段室壁厚度变化在冠心病诊断中的价值。材料与方法：分析３１例冠心病和１１例正常对照组的ＭＲ电影，判断ＭＲ电影对冠心病的检测率。结果：正常对照组心肌各室壁厚度变化一致，缺血和梗塞心肌节段室 壁壁厚度变化明显小于正常心肌。

The Value of the Variance of Segmental Ventricular Wall Thickness in the Diagnosis of Coronary Artery Diseases (CAD)

Objective: To investigate the diagnostic value of the variance of segmental ventricular wall thickness for CAD.Materials and Methods:MR cine was analyzed in 31 patients with CAD and 11 health controls. The accuracy of confirmation of CAD diagnosis with MR cine was determined.Results:The variance of segmental ventricular thickness in normal control group was compatible with each other (P>0.05), while the variance in ischemic and infarcted myocardium was significantly lower than that of normal myocardium (P<0.05). Using the variance of segmental ventricular wall thickness less than 2mm as the standard of abnormal, the sensitivity for infarcted and ischemic segments was 88.14% and 53.85%, respectively, and the specificity was 94.17% and 100%, respectively, the former figures could be raised to 91.18% and 61.54% by combining the variance with ventricular wall dynamic movement. Using the same standard, the sensitivity for diseased coronary artery with infarction and ischemia was 66.67% and 57.14%, respectively, and the specificity was 91.67% and 92.30%, respectively. The sensitivity of MR cine for detection of diseased coronary artery in infarction group was similar to that of left ventricular angiography (LVA), while the sensitivity of MR cine in angina was markedly higher than that of LVA.Conclusion: Variance of segmental ventricular wall thickness on MRI was fairly sensitive and reliable for diagnosing of diseased coronary artery and myocardium due to ischemia or infarction.