Fig. 6From: CT and chest radiography in evaluation of mechanical circulatory support devices for acute heart failureMalposition of Impella pump. AP Chest radiograph with CLAHE filter (a) with an Impella CP device with the outlet portĀ in the aortic arch (white arrow) and the inlet portĀ at the level of the aortic valve (dashed arrow). Contrast enhanced CT coronal image (b) at the level of the LVOT demonstrates high/proximal placement of Impella device with the blood inlet portĀ at the level of the aortic valve. Contrast is seen only in the aorta but not in the left ventricle. This is due to backfilling from the VA ECMO cannula in the femoral artery. (CLAHEācontrast limited adaptive histogram equalization, LVOTāleft ventricle outflow tract, VA ECMOāveno-arterial extracorporeal membrane oxygenation)Back to article page