Cardiac-MRI demonstration of the ligamentum arteriosum in a case of right aortic arch with aberrant left subclavian artery

Figure 4 Three sequential frames of a cine-FIESTA sagittal oblique sequence. A, B: Progressive distension of the esophageal lumen superiorly to the right aortic arch (RAA); C: The water bolus is appreciable in the lower thoracic esophagus, but it was impossible to obtain a significant distention of the esophageal segment passing through the vascular ring formed in its left lateral inferior part by the ligamentum arteriosum. Arrowheads indicate ligamentum arteriosum. T: Trachea; E: Esophagus; ALSC: Aberrant left subclavian artery; KD: Kommerell’s diverticulum; DTA: Descending thoracic aorta; LPA: Left pulmonary artery.