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Significance of and Contributing Factors for a High Resistive Index on Doppler Sonography of the Hepatic Artery Immediately After Surgery: Prognostic Implications for Liver Transplant Recipients

Angeles García-Criado1, Rosa Gilabert1, J. Manuel Salmerón2, Carlos Nicolau1, Ramón Vilana1, Luis Bianchi1, Laura Buñesch1, J. Carlos García-Valdecasas2, Antoni Rimola2 and Concepción Brú1

1 Imaging Diagnosis Center, Clinic Hospital, Villarroel 170, 08036 Barcelona, Spain.
2 Gastrointestinal Diseases Unit, Clinic Hospital, 08036 Barcelona, Spain.



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  		Fig. 1. —52-year-old man with normal resistive index (group 1). Baseline Doppler sonogram obtained after liver transplantation shows normal hepatic arterial flow at hilum. Resistive index is 0.70.

 


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  		Fig. 2. —58-year-old man with high resistive index (group 2). Baseline Doppler sonogram shows high-resistance flow with normal systolic phase and continuous but decreased diastolic flow (type 1 waveform). Resistive index is 0.88.

 


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  		Fig. 3. —56-year-old man with high resistive index (group 2). Doppler sonogram obtained during period immediately after liver transplantation reveals absence of diastolic phase with normal systolic flow at hepatic hilum (type 2 waveform). Resistive index is 1.

 


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  		Fig. 4. —47-year-old woman with high resistive index (group 2). Baseline Doppler sonogram obtained after liver transplantation shows hepatic arterial flow constituted only by little systolic peaks (type 3 waveform).

 


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  		Fig. 5. —46-year-old man with high resistive index (group 2). Baseline Doppler sonogram obtained after liver transplantation reveals absence of hepatic arterial flow (type 4 waveform).

 

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