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Three-vessel-trachea view. (A) This view demonstrates a V-shaped confluence of aortic and ductal arches at the descending aorta. (B) The trachea is located to the right side of the aorta. Color Doppler shows the same direction of blood flow in both arches. Lt, left; Rt, right; PA, pulmonary artery; DA, ductus arteriosus; AAo, ascending aorta; DAo, descending aorta; SVC, superior vena cava.
