 |
| Fig. 18 |
The subject is turned to the left, and the transducer is positioned
at the exact point where the maximal apical impulse can be felt,
with its axis aimed toward the right shoulder (Fig.
18). To obtain a long-axis view, the transducer is rotated so
that the index mark points upward. This is a difficult view to obtain
in young, slim subjects, because the scan plane is at a right angle
to the direction of the ribs and the latter act as a "venetian blind",
that greatly limits the field of view.
If the transducer is rotated 90 degrees clockwise, the index mark
points toward the left axilla. The scan plane is now parallel to
the intercostal spaces, affording an easier view showing the four
cardiac chambers together with the interatrial and interventricular
septa.
2004