1. A method of detecting intraventricular dyssynchrony, including: a) receiving initialization information from an observer viewing a first source image of a series of source images of a ventricle of a beating heart over at least one cardiac cycle to define a plurality of points associated with muscle boundaries of the ventricle; b) extracting muscle boundaries for each source image of the series of source images to define a corresponding series of contour shape images with contour shapes corresponding to the muscle boundaries using a Fourier descriptor model; and c) deforming each contour shape in each contour shape image based at least in part on image forces, external forces, and internal forces to track movement of the muscle boundaries for the ventricle over time in the series of contour shape images.