Basics of Liver Doppler - BMUS

Clinical Ultrasound in Hepatology: Training for Hepatologists

UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, UK 29-30 April 2017

Basics of Liver Doppler

IVICA GRGUREVIC Ass Prof, MD PhD, FEBGH Department of Gastroenterology, Hepatology and Clinical Nutrition University Hospital Dubrava University of Zagreb School of Medicine, CROATIA

OVERVIEW

Basic principles of Doppler US Topographic positions for Doppler scanning

of liver vessels Hepatic veins Doppler normal & abnormal Portal vein Doppler normal & abnormal Hepatic artey Doppler normal & abnormal

Physical basis of Doppler

Christian Doppler (1803 - 1853)

?Emitied US vawe reflects from the moving object and changes the frequency ?Difference between the two frequencies is called Doppler shift and is proportional to the speed of the moving object

f=doppler shift u=flow velocity V=US veloc. in tissue

Cos(90?)=0 should always be ................
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