Coronary Artery Anatomy – CT -Acute Marginal Artery Acute Marginal Artery off the proximal RCA Acute Marginal Artery off the proximal RCA Normal axial CT of the right coronary artery showing the acute marginal artery of the right ventricle (RV) Ashley Davidoff MD 3D CT – Acute Marginal Artery, Posterior Descending (PDA) and Posterior LV branches off the RCAAshley Davidoff MD