Résumé : In this study, color tissue Doppler imaging was used to assess global and regional mechanical dyssynchrony in patients with ischemic cardiomyopathy and those with idiopathic dilated cardiomyopathy. Potential differences in the area of latest mechanical activation could have practical implications regarding lead positioning and the success rate of biventricular pacemaker implantation. © 2005 by Excerpta Medica Inc.