Sonographic evaluation of hepatobiliary system

Doppler Ultrasound in Hepatobiliary Imaging

· Portal Vein: Normally hepatopetal (toward the liver), with a monophasic waveform.

· Hepatic Artery: Low-resistance waveform; increased resistance may suggest cirrhosis.

· Hepatic Veins: Normally triphasic; monophasic flow suggests liver congestion.

· Biliary Tree Flow: Color Doppler helps differentiate bile duct dilatation from blood vessels.

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