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Figure 1a. Interrupted aortic arch in a 3-day-old girl with transposition of the great arteries, ventricular septum defects (VSDs), and an atrial septum defect (ASD). Severe aortic coarctation and a hypoplastic right ventricle were suspected at echocardiography. (a) VR MR angiographic image demonstrates a type A interrupted aortic arch. Transposition of the great arteries, with the aorta (AO) arising from the right ventricle (RV) and the pulmonary trunk (MPA) from the left ventricle (LV), is clearly depicted. PDA = patent ductus arteriosus. (b) Horizontal long-axis cine image shows multiple VSDs and the ASD (arrows). LV = left ventricle, RV = right ventricle. (See also Movie 1 at radiographics.rsnajnls.org/cgi/content/full/27/1/5/DC1.) (c) Short-axis cine images with measurement of the end-diastolic volumes show equal-sized ventricles, thereby helping rule out right ventricular hypoplasia. BSA = body surface area, LV = left ventricle (outlined in red), RV = right ventricle (outlined in yellow). On the basis of the MR imaging findings and without further cardiac catheterization, surgical correction of the aortic arch and pulmonary banding were performed on day 4. Biventricular repair with an arterial switch procedure and closure of the VSDs and ASD were performed 3 weeks later.
