Diagnostic Ultrasound - Abdomen and Pelvis

Biliary System
Anatomy: Abdomen
RIGHT HEPATIC LOBE
Rectus muscle
Gallbladder
Right hepatic lobe
Middle hepatic vein
Duodenum
Portal vein
Inferior vena cava
Heart
Rectus musculature
Right hepatic lobe
Portal triad
Portal triad
Gallbladder
Right kidney
Inferior vena cava
Psoas
Aorta
Spine
(Top) Subcostal, longitudinal ultrasound shows the right hepatic lobe and gallbladder with patient in the left lateral decubitus position.
Ideally, a patient must fast for at least 4 hours to allow for adequate gallbladder distension. (Bottom) Subcostal, transverse ultrasound
of the right hepatic lobe demonstrates its anatomical relationships with major vessels and the right kidney. The intrahepatic bile ducts
are localized within the portal triads, which are visible by the prominent echogenic walls of the portal veins in these triads. The portal
triad contains the portal vein, bile duct, and hepatic artery. Normally, the intrahepatic bile ducts and hepatic arteries are not readily
visible unless they are dilated.
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