Figure 3From: Doppler echocardiography and myocardial dyssynchrony: a practical update of old and new ultrasound technologies Septal-to-posterior wall motion delay (SPWMD). SPWMD in a normal subject (left panel) and in a patient with CHF and left bundle branch block. (Modified from Agler DA et al, J Am Soc Echocardiogr 2007;20:76–90).Back to article page