Abstract
Ischemic heart disease is closely related to stenosis on the coronary artery (CA), and the volume change of the left ventricle (LV) in a cardiac cycle is an important index for the evaluation of cardiac function. Coronary angiograms are usually used to identify stenotic position and its level, in clinical practice. However, a coronary angiogram also has information on heart motion in its time-series record. Usually, physicians only feel an abnormal motion from his empirical model and perform another inspection to confirm it. In this paper, we developed a method to estimate deformation and motion of the left ventricle by ellipsoidal fitting to three-dimensional shapes of the CA from time-series images of a biplanar CA angiogram. We had demonstrated this procedure against a clinical CA angiogram.
