Descending thoracic aorta on transesophageal echocardiogram

Panel A: Horizontal (0º) imaging plane shows the descending thoracic aorta which is circular in appearance. Panel B: Vertical (90º) imaging plane shows the superior regions on the right and inferior regions on the left. Panel C: Color flow Doppler obtained in the vertical (90º) imaging plane confirms the normal direction of blood flow in the descending thoracic aorta with flow towards the transducer (yellow-red) followed by flow of blood away from the transducer (blue).