Color Tissue Doppler Myocardial Velocities Consistently Underestimate Spectral Tissue Doppler Velocities: Impact on Calculation Peak Transmitral Pulsed Doppler Velocity/Early Diastolic Tissue Doppler Velocity (E/Ea)

Although significant correlations exist, myocardial velocities measured using color TD significantly underestimate velocities by spectral TD. Consequently, E/Ea by color TD significantly overestimates E/Ea using spectral TD, which could lead to errors in assessment of LV diastolic function.