Figure 2From: The fusion band in V1: a simple ECG guide to optimal resynchronization? An echocardiographic case report Echocardiographic parameters at each step of AV interval. Ejection fraction (EF%), diastolic filling time (DFT), E wave deceleration time (DT), Aortic Velocity Time Integral (Aortic VTI), Myocardial performance index (MPI).Back to article page