Flattening of the IVC and a reduced-diameter aorta in
hypovolemic shock. a Arterial-phase contrast-enhanced CT shows a
flattened IVC at the intrahepatic portion (arrow) and a narrow-caliber
aorta (arrowhead). b Arterial-phase contrast-enhanced CT shows a
flattened IVC (arrow) at the origin of the renal vein level and a
narrow-caliber aorta (arrowhead) at the renal artery’s origin