Selected cine frame in the postero-anterior projection of a single ventricular (SV) cine-angiogram demonstrating simultaneous opacification of the main (MPA), left (LPA), and right (RPA) pulmonary arteries from the SV and the aorta (Ao) from the right ventricle (RV). Note that the Ao is positioned to the left of the MPA, indicating l-transposition of the great vessels. C1. Catheter in the inferior vena cava (not marked) which was advanced into the right atrium (RA) and then into the SV; C2. Catheter in the descending aorta (not marked).