定量组织速度成像对冠心病节段舒张功能的临床评价

A STUDY OF REGIONAL DIASTOLIC FUNCTION IN PATIENTS WITH CORONARY ARTERY DISEASE BY QUANTITATIVE TISSUE VELOCITY IMAGING

探讨定量组织速度成像(QTVI)评价冠心病左室节段舒张功能的临床应用价值。应用QTVI检测 4 0名正常人与 30例冠心病患者左室长轴方向等容舒张期、快速充盈期、心房收缩期节段心肌运动速度VIR、VE、VA和VE/VA比值以及二尖瓣口血流频谱的快速充盈速度 (E)、左房收缩充盈速度(A)和E/A比值 ,并进行对比分析。结果显示 ,冠心病患者缺血心肌节段舒张早期峰值速度较正常人降低 ,VE/VA 比值小于 1。提示QTVI能敏感定量评价左室心肌节段舒张功能异常 。

To evaluate the clinical value of quantitative tissue velocity imaging (QTVI) in estimation of LV regional diastolic function in patients with coronary artery disease (CAD). The moving peak tissue velocity of LV wall in long axis direction during isovolumic relaxation (V IR ), early diastole (V E), atrial contraction (V A), and V E/V A ratio were measured and calculated by QTVI in 30 patients suffering from CAD and 40 healthy individuals. The results of QTVI were also compared with mitral valve peak flow velocities during early diastole (E), atrial contraction (A), and E/A ratio. In patients with CAD, V E was significantly lower than of nomal subjects( P <0 001, V E/V A<1). QTVI was valuable in evaluating the abnormalities quantitatively and sensitively of LV regional diastolic function, and also in diagnosis of regional myocardial ischemia of CAD.