Diagnostic Ultrasound - Abdomen and Pelvis

Cholelithiasis
Diagnoses: Biliary System
(Left) Longitudinal oblique
ultrasound shows dependent
gallstones . Acoustic
shadowing is noted posterior
to the largest stone . There
is a "comet tail" artifact from
focal adenomyomatosis ſt.
(Right) Oblique
transabdominal ultrasound
shows multiple small,
nonshadowing stones in a
contracted gallbladder.
(Left) Left lateral decubitus
ultrasound of a poorly
distended gallbladder shows a
dependent layer of small
stones with an aggregate
shadow ſt. (Right) Axial T2
HASTE MR in the same patient
shows multiple low-signal
stones in a mildly thickened
gallbladder.
(Left) Left lateral decubitus
ultrasound shows a fundal
gallstone with acoustic
shadowing ſt. Note the
sludge level st but no wall
thickening. (Right) Left lateral
decubitus ultrasound of the
same patient shows twinkling
artifact in the stone .
290