二维斑点追踪成像技术是医学领域新近发展起来的一项超声心动图技术，其在二维超声心动图的基础上，自动追踪室壁感兴趣区域内心肌组织变形与形变速度，具有非侵入性和不受声束角度影响的优点，通过对心肌纵向应变、径向应变、圆周应变和心室扭转的测定，可以客观、定量、准确地评估心肌局部和整体功能。“,”Two-dimensional speckle tracking imaging,as a newly developed non-invasive technique in the field of ultrasound,depending on two-dimensional ultrasonography,can automatically track myocardium deformation and deformation velocity of the region of interest of the ventricular wall .With the advantage of independence from the Doppler angle and non-invasiveness,itcan provide an objective,quantitative and accu-rate assessment of myocardial regional and global function through longitudinal, circumferential, radial strains,and myocardial rotation.