A cardiac imaging method includes acquiring a projection image representation which includes a myocardium (S100). The myocardium is segmented and a mask is generated (S102). The mask is optimized (S104). A blood pool is determined from the optimized mask (S106) and the mask is skeletonized based on a clusterfication of the myocardial slices (S108). The center of mass is determined (S110) from the blood pool and the skeletonized mask. Myocardial parameters are determined (S112) from the skeletonized mask.