Abstract
A 1-day-old infant was referred to our pediatric cardiology service with tachypnea and differential saturations of 95% in the right arm and 85% in the left arm and lower limbs. Echocardiography showed a small patent foramen ovale with the presence of an aortopulmonary window. There was difficulty visualizing the aortic arch and distal pulmonary arteries, and therefore magnetic resonance imaging (MRI) of the great arteries was performed. A contrast agent–enhanced MR angiogram and a 4-dimensional flow MRI sequence (velocity encoding, 250 cm/s; field of view, 180×180×77.5 mm; voxel size, 2.25×2.3×2.5 mm; repetition time/echo time=3.8/2.4; 20 phases; flip angle, 5°; SENSE 3 [2 in the phase-encoding direction and 1.5 in the slice-encoding direction]; respiratory self-gating for motion correction)1 were used to demonstrate anatomy …
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