Coronary Artery Anatomy – CT – Diagonal Arteries Diagonal Arteries 3- 5 Diagonal Branches off the LAD Supply the Anterolateral Part of the LV 3D CT in LAO Projection Diagonal Arteries off the LAD – 3D CTNormal axial CT of the left anterior descending coronary artery showing the diagonal arteries supplying the anterior wall of the left ventricle (LV)Ashley Davidoff MD