“…In RT3D echocardiography, a 2-D array transducer is used to steer and focus the ultrasound beam over a pyramidal-shaped volume rather than a single-sector scan [12], [13]. Recent studies have demonstrated the effectiveness of RT3D echocardiography for the monitoring of left ventricular function [14], detection of perfusion defects [15], reduced scanning times in dobutamine stress echo exams [16], guidance of right ventricular endomyocardial biopsy [17], measurement of peak left ventricular flow velocities [18], and evaluation of congenital cardiac abnormalities [19].…”