The 6-site average velocities of mitral annulus measured by TVI can quantitatively assess the global systolic and diastolic function of left ventricle and has a good correlation between the TVI and conventional echocardiography.

• 应用TVI技术测量二尖瓣环6个节段的平均运动速度可定量评价左室整体收缩和舒张功能。 该方法与传统超声心动图测量左室功能有良好相关性。