A method for automatic left ventricular (LV) inner border detection, the method comprising: performing image mapping on an echocardiogram, to produce a multi-level image map； converting the image map into a binary image, by attributing pixels of one or more darker levels of the image map to the LV cavity and pixels of one or more lighter levels of the image map to the myocardium； applying a radial filter to contours of the myocardium in the binary image, to extract an approximate inner border of the LV； and performing shape modeling on the approximate inner border, to determine the LV inner border.
