Fig. 24. Post-transplant hepatic artery stenosis: a 53-year-old man with a past medical history of liver transplantation 1 year ago presented with nausea, vomiting, abdominal discomfort, and abnormal liver function tests.

A, B. Spectral Doppler ultrasonography shows patent right (A) and left (B) hepatic arteries with decreased systolic amplitude, prolonged acceleration times, and tardus-parvus waveforms, suggesting proximal hepatic arterial stenosis. C. Spectral Doppler ultrasonography from the main hepatic artery at the anastomosis level shows an increased velocity of the proper hepatic artery. D. Contrast-enhanced coronal computed tomography shows severe focal narrowing (arrow) at the hepatic artery anastomosis, consistent with stenosis.