Which view best displays the LAD and Cfx together?

• A. Lt Lateral view shows the LAD and Cfx
• B. RAO view shows the LAD and Cfx
• C. LAO view shows only RCA
• D. RAO cranial view shows the LM and LAD

Answer: (A)

Understanding how projection angles reveal coronary arteries is essential. The LAD runs in the anterior interventricular groove toward the apex, while the circumflex artery travels along the left atrioventricular groove toward the lateral wall. A left lateral projection lines up the heart so these two left‑sided vessels lie in the same plane and can be followed together with minimal overlap and foreshortening. This makes the LAD and circumflex most clearly visible in a single view, allowing you to assess them simultaneously.

Other views can separate the vessels or obscure one of them due to rotation and overlap. For example, oblique angles that emphasize the right side or rotate the heart differently can reduce clarity for the left coronary system, and may not show both LAD and circumflex as cleanly in one image.