Diagnostic Ultrasound - Abdomen and Pelvis

Urolithiasis
Diagnoses: Urinary Tract
(Left) Longitudinal US of the
left kidney shows a calculus
within the proximal ureter ſt
causing obstruction with
severe dilation of the
extrarenal pelvis . (Right)
Longitudinal US of the left
ureter shows an obstructing
distal ureteral calculus
causing hydroureter ſt.
(Left) Transverse color
Doppler US of the bladder in
the same patient reveals only
a right ureteral jet ſt.
Absence of a left ureteral jet
in association with a distal left
ureteral stone indicates
high-grade/complete
obstruction. Interestingly, this
stone does not demonstrate
twinkling artifact; visibility of
twinkling artifact is highly
dependent on machine
settings and stone
composition. (Right)
Transverse US of the bladder
shows a stone at the right UVJ
ſt with posterior acoustic
shadowing .
(Left) In the same patient,
zoomed-in transverse color
Doppler US of the right UVJ
stone demonstrates twinkling
artifact st and posterior
acoustic shadowing .
(Right) Longitudinal US of the
distal right ureter in the same
patient shows the right UVJ
calculus ſt with posterior
acoustic shadowing and
proximal hydroureter st.
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