Diagnostic Ultrasound - Abdomen and Pelvis

Approach to Urinary Tract Sonography
Diagnoses: Urinary Tract
(Left) Echogenic, shadowing
foci in the renal pelvis with
associated twinkling artifact
ſt are diagnostic of
nephrolithiasis. (Right) The
left renal collecting system
is dilated, but the cortex is
normal thickness, compatible
with an acute process in this
patient with flank pain.
(Left) The left ureter is dilated
throughout its imaged length
. (Right) The ureteral
obstruction is due to an
echogenic shadowing calculus
with associated twinkling
artifact ſt at the left
ureterovesical junction.
(Left) A large stone (calipers)
is noted in the right ureter in
another patient. Note
posterior acoustic shadowing
. (Right) Coronal CT in the
same patient confirms a
dilated right ureter due to
a mid-ureteral stone .
422