彩色组织追踪显像在心力衰竭患者左心室心肌运动异常中的应用价值

Clinical use value of color tissue tracking imaging in abnormal myocardial motion of left ventricle in patients with heart failure

目的探讨彩色组织追踪显像（CTTI）在评价心力衰竭患者左室壁心肌运动异常方面的临床价值。方法应用彩色组织追踪显像对36例心力衰竭患者（异常组）及30例健康者（对照组）左心室壁各节段收缩期运动位移进行检测和分析,并将异常组与对照组进行显著性检验。结果健康人左室壁各节段收缩期运动位移有一定的规律性,在同一室壁从基底段到心尖段逐渐减低,心力衰竭患者可检出运动异常节段,表现为位移值的减低及其彩色编码显像和曲线波形的改变。异常组的运动位移值均低于对照组的相应节段,两者比较差异有统计学意义（P〈0.05）。结论彩色组织追踪显像通过定量检测心力衰竭患者左室壁异常心肌运动的位移值及观察彩色编码显像变化和曲线波形的改变,能够快速及无创的定量评价左心室节段性收缩功能和左室壁心肌运动异常。

Objective To investigate the clinical value of color tissue tracking imaging（CqTI） in the abnormal regional wall movement of left ventricle in patients with heart failure. Methods The systolic displacement of the left ventricular segmental movement of 30 normal subjects and 36 patients with heart failure was measured and analysed with CTTI. The parameters were analysed of the two groups were compared and analysed. Results There were some regularities of each region of the left ventricular segmental movement in normal subjects. The systolic displacement gradually decreased from base to apex in the same wall in control groups. There were some abnormal segmental movements in the abnormal groups. The decrease of the displacement and the change of color - codes displacement of myocardial tissue and its wave curve were shown in abnormal segmental movement in the abnormal groups. The displacement values of diseased segments in the abnormal groups were much lower than those in the control groups, with significant difference between the two groups（P 〈 0.05）. Conclusions CTFI can quantitatively measure the tissue displacement in abnormal movement segment of left ven- tricle of patients with heart failure. CTTI can be used to observe the change of color - codes displacement of myocardial tissue and its wave curve in abnormal segmental movement in the abnormal groups. It is noninvasive, and it is a rapid method for assessing segmental systolic funtion and abnormal regional wall movement of left ventricle.