 |
| Fig.4.35 |
As blood emerges from the right ventricular outflow tract into the proximal pulmonary artery in systole, velocities are increased and aliasing frequently occurs. Very early systolic flow into the main pulmonary artery is shown in Figure 4.35 (panel A). Panel B demonstrates the marked aliasing that occurs an instant later in systole, which is typical of normal right ventricular outlflow. Note also that the flow can typically be detected to the bifurcation of the main pulmonary artery and occasionally into the right and left pulmonary arteries.
 |
| Fig.4.36 |
Color flow detection of pulmonary insufficiency is typically manifest in the
left parasternal short-axis view where the flame-like regurgitant
jet is seen in diastole (Fig.
4.36). An operator may need to angle the beam to open the
right ventricular outflow tract more fully to detect and appropriately
record small degrees of this disorder.
2004