Which view is most associated with showing the right coronary artery from mid to distal segments?

• A. RAO view
• B. LAO view
• C. LAO cranial view
• D. Lt Lateral view

Answer: (A)

The main idea is that the best projection for tracing the right coronary artery along its course in the right atrioventricular groove is one that aligns with its path and minimizes overlap with other cardiac structures. The RAO projection, especially with a gentle caudal tilt, positions the heart so the RCA runs more tangentially to the imaging plane as it descends into mid and distal segments. This reduces foreshortening and separates the RCA from the right atrium, making the mid to distal portions clearer. In contrast, LAO views focus more on the left coronary system and can cause overlap or foreshortening of the RCA, while a left lateral view mainly profiles the left ventricle and offers less visibility of the distal RCA. Therefore, the RAO view is most associated with showing the right coronary artery from mid to distal segments.