Fig. 1From: Retrograde transcatheter aortic valve closure in an infant with failing Norwood stage I palliation: a case reportAngiograms of the ascending aorta in left anterior oblique (a) and lateral (b) views revealing severe aortic regurgitation. Aortic valve’s “ring” diameter is measured as 8.3 × 7.0 mm. LV Left ventricle, AAo Ascending aortaBack to article page