In the LAO cranial view, which region of the coronary arteries is typically assessed?

In the LAO cranial view, which region of the coronary arteries is typically assessed?

• A. Proximal and mid LAD
• B. LAD-Cfx bifurcation
• C. Origin of diagonals
• D. Distal RCA

Answer: (A)

In this projection, the most reliable visualization is of the left anterior descending artery in its proximal to mid segments. The LAO with cranial tilt aligns the heart so the LAD runs without excessive overlap from the left main or other vessels, making it easy to assess for disease where this artery travels along the anterior interventricular groove. The distal right coronary artery isn’t as well seen in this view, and while the diagonals originate from the LAD, the view is optimized to evaluate the LAD’s proximal and mid portions. Thus, the region typically assessed is the proximal and mid LAD.

In this projection, the most reliable visualization is of the left anterior descending artery in its proximal to mid segments. The LAO with cranial tilt aligns the heart so the LAD runs without excessive overlap from the left main or other vessels, making it easy to assess for disease where this artery travels along the anterior interventricular groove. The distal right coronary artery isn’t as well seen in this view, and while the diagonals originate from the LAD, the view is optimized to evaluate the LAD’s proximal and mid portions. Thus, the region typically assessed is the proximal and mid LAD.