Assessment of Intraventricular Mechanical Dyssynchrony and Prediction of Response to Cardiac Resynchronization Therapy: Comparison between Tissue Doppler Imaging and Real-Time Three-Dimensional Echocardiography

Marked differences between techniques are found for the presence of mechanical dyssynchrony when current cutoff values are applied, making interchangeability of these techniques uncertain. Assessment of mechanical dyssynchrony by RT3DE might be an appropriate alternative to TDI for accurate prediction of response to CRT.