Improved visualization of pulmonary venous flow Doppler signal by intravenous injection of sonicated albumin.

Color Doppler signal of pulmonary venous flow was enhanced, and the optimal recordings could be detected in most cases after intravenous injection of sonicated albumin. Improved visualization of pulmonary venous flow Doppler signal by intravenous injection of sonicated albumin should have important clinical implications for the assessment of left ventricular diastolic function by using Doppler technique.