3-D MITRAL ANNULUS RECONSTRUCTION AND MOTION ANALYSIS FROM REAL TIME ECHOCARDIOGRAPHY IMAGES

3-D MITRAL ANNULUS RECONSTRUCTION AND MOTION ANALYSIS FROM REAL TIME ECHOCARDIOGRAPHY IMAGES ■

Lei Zhu, Lei Zhu, Xin Yang, Xin Yang, Lipin Yao, Lipin Yao, Kun Sun, Kun Sun, YanFeng Shang, YanFeng Shang, Rudi Deklerck, Rudi Deklerck, Edgard Nyssen, Edgard Nyssen, Marc Nyssen, Marc Nyssen

Abstract ■

Real time 3-D echocardiography (RT3DE) images allow noninvasive evaluation of the three dimensional geometry of the mitral annulus [1]. In this study, we propose a computer aided method for the assessment of the geometry of the mitral annulus and the analysis of the motion of the mitral annulus throughout the cardiac cycle from RT3DE. The method consists of the following four steps. (A) marking the boundary points on the mitral annulus, (B) re-arranging these marked points into a set of series of points on a closed contour, i.e. the saddle-shaped mitral annulus, (C) describing the mitral annulus by a spline model, (D) computing three new dynamic parameters.