A New Associated Scheme for Segmentation and Tracking of Endocardium and Epicardium from MR Cardiac Image Sequences
MR心脏序列图像左心室内外壁联合分割和时序追踪新方法

Segmentation of endocardium and epicardium from MR cardiac mage sequences is the most important prerequisite for computer aided cardiac function analysis. This paper proposes a new associated scheme for segmentation of endocardium and epicardium from MR cardiac image sequences. Firstly, segment the endocardium improved GACM, then propagate the segmented contour to other time frames. Secondly, using the segmented endocardium as the initialization contour, the curve is evolved with ad hoc designed regional balloon force controlled by the local mean gray level and the distance from endocardium to get epicardium. Experimental results on clinical ECG gated 4-D cardiac MR images are very close to the outlines medical experts manually. Left ventricle surface model can be reconstructed based on the segmentation results and some important clinical cardiac indices can be calculated.