Ultrasound is often employed in the initial work-up of potential donor and recipient for LDLT. Ultrasound is most useful as the initial screening test in detecting hepatic parenchymal abnormalities, while CT or MRI are the modalities of choice in the demonstration of vascular and biliary anatomy and for volumetric studies. Doppler US is a crucial imaging modality used to detect intra and postoperative complications following liver transplantation with possibility of quantitative description of changes in the hepatic flow during graft dysfunction and can be used to assess its long term consequences.This study was conducted on a heterogeneous sample of 30 randomly selected recipients who underwent adult-adult LDLT with special focus on the intra-operative and post-operative Doppler US results. Different post-operative complications (including vascular, parenchymal and biliary complications) were followed for one year. Our results agreed with the hepatic buffer response theory where an early increase in hepatic arterial resistance indices and a high portal flow are common findings, but are transient. In our study, this phenomenon has not been associated with deterioration in the clinical course or decreased graft and patient survival.Early Hepatic artery thrombosis, being a life threatening complication needs rapid intervention and when suspected on Doppler US bases, conventional arteriography is mandatory to rule out HAT.