Radiographs demonstrating positioning of an intra-aortic balloon pump

(A) Chest radiograph showing proper positioning of an IABP in the thoracic aorta.

(B) Annotated chest radiograph demonstrating key anatomic structures used for IABP positioning, including the carina and aortic arch. Note within the black circle a magnified image of the IABP tip located 3.74 cm below the aortic arch.