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Click 5-year-old female post truncus arteriosus repair with type A quadricuspid aortic valve. Axial cine images obtained on a Siemens TimTrio 3.0T scanner using a dynamic cine 2D spoiled gradient echo sequence (FLASH; TR/TE/flip angle: 38.07/1.88/15; matrix: 292 x 576; FoV: 131 x 300mm) demonstrates the opening and the closing of the quadricuspid aortic valve; the four isolated aortic leaflets are clearly depicted.

Click 5-year-old female with truncus arteriosus repair and quadricuspid aortic valve. Oblique sagittal thin maximum intensity projection (MIP) MR images obtained on a Siemens TimTrio 3.0T scanner using a 3D FLASH sequence (TR/TE/flip angle: 2.8ms/1.06ms/18; matrix: 292 x 576; FoV: 281 x 500) following the intravenous administration of a single dose (5 mL) of Gd-based paramagnetic contrast agent (gadobenate dimeglumine), demonstrates a widely patent conduit between the RVOT and the main pulmonary artery.