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Ultrasound anatomy of the normal liver
IVICA GRGUREVIC
Assoc Prof, MD PhD, FEBGH
Department of Gastroenterology, Hepatology and Clinical Nutrition
University Hospital Dubrava
University of Zagreb School of Medicine, CROATIA
Clinical Ultrasound in Hepatology: Training for Hepatologists UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, UK
29-30 April 2017
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Diaphragmatic and anterior surface of the liver
Incisura ligamenti teretis
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Upper liver pedicle
Lower liver pedicle
Main portal fissure: Cantlie´s line
(Sir James Cantlie, Scotland, 1897)
Visceral surfice of the liver
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Lig. hepatoduodenale and hepatogastricum
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Liver vascular supply
• arterial supply • portal supply • venous outflow
25%
75%
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Hepatic artery
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Portal vein
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The liver receives app. 2/3 of its blood supply from the portal vein. Portal vein lenght : 6-8cm, diameter 6-13mm.
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Venous outflow
Venous outflow – three major hepatic veins drain into the IVC
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Functional division - segmental liver anatomy
It was first described by the French Surgeon Claude Couinaud in 1957.
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Liver vascular segments: US
VII
VIII
IV A
IV B
II
V
VI
VCI
MHV RHV
LHV
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US approach to the liver
Subcostal Intercostal
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• Beauty of the US is that it allows to analyze the structure of interest form the different aspects/points/planes
• The more you see, the more reliable information you get…like a puzzle
• Do not hesitate to look at the liver from different spots
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Normal liver: subcostal approach
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Normal liver: intercostal approach
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Normal liver: left decubital position
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Sagital plane median line
VCI RA
CL
HV
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Normal liver size <15-16 cm CC in MCL
Measurement of liver size in the largest craniocaudal diameter in the MCL during
inspiration in a supine subject. Measured in the midhepatic line with a large field of
view from the post diaphragm to the lower anterior edge.
*Kratzer W. J. Ultrasound Med. 2003; **Patzak M. J Clin Ultrasound 2014.
N=2080* and 1789** subjects; Germany
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Normal liver <13 cm AP in MCL
MCL Max AP
• The maximum
anteroposterior diameter
of the liver seen on this
image
AVG 11.33±1.42*
• The normal liver size
defined as 13±0.5 cm**
*Childs JT. AJUM 2014; **German Association of Ultrasound in Medicine (DEGUM) in Schmidt G.
Ultraschall Kursbuch. 4 ed. Stuttgart: Thieme Verlag; 2003
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Ultrasound measurements of the liver: an intra- and inter-rater reliability study
Childs JT. Australas J Ultrasound Med 2014 the most reliable measurements
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Examination criteria: „SSOTM”
• S = size
• S = shape
• O = outline
• T = texture
• M = measurement
Dietrich CF. EFSUMB Course book. US of the liver, 2012
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EFSUMB Course Book 2012: Liver
• Shape – Normally described as pyramidal.
• Outline – surface should be smooth with no lumps protruding or
indentations.
– The inferior liver border in the normal patient should have an acute angled edge.
• Texture, echogenicity – The normal liver parenchyma is of medium homogenous
echogenicity, usually slightly darker than the spleen and slightly brighter than the renal cortex
Dietrich CF. EFSUMB Course book. US of the liver, 2012
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Spleen
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Normal spleen US
US approach through 10/11th
left IC space
Normal Spleen Size
<13 cm superior to inferior
axis
6-7cm in the medial to lateral
axis
5 to 6cm in the anterior to
posterior plane.
10% accesory spleen (<3 cm)
SONOGRAPHY Introduction to Normal Structure and Function Second Edition Reva Arnez
Curry and Betty Bates Tempkin Saunders
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Splenic vasculature
Splenic arteries
Splenic vein
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University Hospital Dubrava, Zagreb, HR