Fig. 1

Left ventricular (LV) chamber quantification. For LV chamber quantification, the endocardial (blue) and epicardial (yellow) contours are delineated in diastole (left) and systole (right) in a stack of short axis slices that cover the whole left ventricle. a and b illustrate the approach with inclusion of the papillary muscles as part of the LV volume. c and d show the approach with exclusion of the papillary muscles from the LV volume