We shall now further evaliate this patient's angiocardiogram. These are still-frames of an angiocardiogram with contrast injected into the right ventricle viewed in anteroposterior and lateral projections. In the real-time study follows, contrast enters the heart through a catheter positioned in the body of the right ventricle. Most of the contrast passes through a narrow right ventricular infundibulum into the main pulmonary artery. Contrast also opacifies the right and left branch pulmonary arteries. Some contrast enters the aorta, consistent with a right-to-left shunt through a ventricular septal defect. Note that the main pulmonary artery is significantly smaller than the aorta.

The lateral view more clearly demonstrates the narrow right ventricular outflow tract and pulmonary artery, as well as the ventricular septal defect, through which contrast can be seen entering the left ventricle and the aorta. Contrast entering the pulmonary arteries can be seen to return to the left atrium and left ventricle.