Fig. 3From: Value of dual Doppler echocardiography for prediction of atrial fibrillation recurrence after radiofrequency catheter ablationMeasurement of TE-e’ using a dual Doppler system. From simultaneous recordings of transmitral inflow and mitral annular velocity, the time interval was measured between the onset of E and of e’(TE-e’) for 10 consecutive beatsBack to article page