Application of contrast-enhanced ultrasound after liver transplantation: Current status and perspectives

Figure 4 Ischemic-type biliary lesions. A 38-year-old recipient with ischemic-type biliary lesion (ITBL) after liver transplantation. On 17 d after liver transplantation, color Doppler ultrasound (CDUS) shows the normal intrahepatic arterial waveform (A) while contrast-enhanced ultrasound (CEUS) of hilar bile duct walls shows no enhancement compared with the surrounding liver parenchyma in arterial phase (arrows) (B). In 2 mo after liver transplantation, CDUS shows the tardus-parvus intrahepatic arterial waveform (C) with biliary leakage in the portal hepatis on US (D). In 1 year after liver transplantation, ITBL is confirmed on cholangio-pancreatography (E). CEUS may have potential value in the early prediction of ITBL after liver transplantation.