The efferent blood flow of early hepatocellular carcinoma and borderline lesions: Demonstration by color Doppler imaging.

We performed waveform analysis of the efferent signal detected within early hepatocellular carcinomas and borderline lesions, in which portal flow was demonstrated. Continuity of this flow with the surrounding vessels was also analyzed. Nine nodules in 7 patients with early hepatocellular carcinomas and borderline lesions were included in this study.

Proximal bifurcation of hepatic artery: Novel findings on hepatic arteries demonstrated by ultrasound Doppler imaging, B-flow, and US angiography.

Purpose: It has generally been held that each portal branch is always accompanied by a single arterial branch in the liver. During Doppler ultrasound examination, however, we sometimes encounter a portal branch that appears to be associated with two arterial branches, a phenomenon referred to below asthis finding orthis phenomenon. Here we attempt to confirm that this finding is based on a correct interpretation of the image and to disclose its basic mechanism.