514.All
are true regarding neuroimaging of Wilson disease except
a.
“face of the giant panda” sign in medulla
b. the “bright claustral” sign
c. Diffusion-weighted MR shows variable findings,
d. significant decrease in the NAA/Cr ratio in the
parietal-occipital cortex, frontal white matter, and basal ganglia
e. may improve and/or resolve after effective
treatment
514.---a
Two specific MRI signs have
been described in WD. The better known is the “face of the giant panda” sign ,
which describes hyperintense signal on long-TR sequences throughout the
midbrain with sparing of the red nucleus, the lateral portion of the pars
reticulata of the substantia nigra, and a portion of the superior colliculus.
The other sign, the “bright
claustral” sign, correlates with focal hyperintense signal of the claustrum on
long-TR sequences . In a recent investigation, the “face of the giant panda”
sign was found in 12% and the “bright claustral” sign in 4% of patients with
WD.
No comments:
Post a Comment