1. A method for processing a set of medical image data to view a heart, comprising: automatically obtaining a segmentation of a left ventricle of the heart from a set of volumetric image data by evaluating an isoperimetric ratio of a family of segmentations of the left ventricle; determining a directional relationship between the left ventricle and a right ventricle; and defining a plurality of cardiac planes based on the segmented left ventricle.