Diagnostic Ultrasound - Abdomen and Pelvis

Approach to Biliary Sonography
Diagnoses: Biliary System
(Left) Longitudinal ultrasound
shows a normal gallbladder in
the supine position. The lumen
is anechoic and the wall st is
very thin or barely perceptible.
The neck ſt does not contain
any stones. (Right)
Longitudinal ultrasound shows
a normal gallbladder in the
left-side decubitus position.
The neck ſt and cystic duct
are better evaluated.
(Left) Longitudinal oblique
ultrasound of the porta
hepatis shows a common bile
duct ſt measuring 6 mm
(inner to inner measurement)
proximally. Portal vein st and
inferior vena cava were
normal. (Right) Longitudinal
color Doppler ultrasound of
the porta hepatis shows no
flow in the common hepatic
duct ſt. The portal vein st,
inferior vena cava , and
proper hepatic artery were
normal.
(Left) Longitudinal oblique
ultrasound of the distal
common bile duct ſt shows
smooth tapering down to 3
mm with no stone or wall
thickening. Main portal vein
st is noted. (Right) Transverse
ultrasound through the head
of the pancreas shows the
normal distal common bile
duct ſt. Adjacent vessels are
splenic vein st, superior
mesenteric artery , aorta
, and inferior vena cava .
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