you have completed review of this screen, please click the "Next page"
blue arrow for the second portion of this section. The "straight" LAO view of the left
coronary artery is limited by overlap and foreshortening of the proximal
vessels, particularly the circumflex system. However, a steep (50 to 60
degrees) may be of value in studying:
the mid and distal parts of the left anterior
the diagonal artery
A very steep or left lateral projection
may lay out the obtuse marginal artery when other LAO projections
are less helpful.
The picture on the top left is a 3-Dimensional
rendering of a left coronary artery system that is spinning along the
AP-LAO axis. You may click on the buttons to freeze and label the animation
in the AP and LAO projections.
The picture on the top right is a still image in the LAO projection.
Note the overlap of the circumflex branches. However, the origin and the
trunk of the diagonal is nicely laid out.
When you have completed review of this screen, please click the "Next
page" blue arrow for the second portion of this section.