1. A method for cardiac segmentation, comprising the steps of: providing a plurality of digitized medical images, each said image comprising a plurality of intensities corresponding to a domain of points on an 2-dimensional grid, said plurality of images comprising a sequence of cardiac images acquired at different time points; filtering noise from said sequence of images; approximating the endocardium with a first circle; approximating the epicardium with a second circle; finding candidate points for the endocardium; finding candidate points for the epicardium; and interpolating gaps between points of the endocardium and between points of the epicardium wherein the myocardium is segmented.