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Diffusion tensor imaging in hydrocephalus--findings before and after shunt surgery.
[hydrocephalus with stenosis of the aqueduct of sylvius]
To
evaluate
changes
in
diffusion
tensor
imaging
(
DTI
)
-
derived
parameters
in
patients
with
hydrocephalus
(
HC
)
before
and
several
weeks
after
shunt
surgery
.
Thirteen
HC
patients
were
examined
with
DTI
before
and
after
shunt
surgery
.
In
a
combined
region
of
interest
and
whole
brain
voxel-based
analysis
,
different
DTI
parameters
were
compared
with
an
age-matched
control
group
.
Alteration
of
DTI
parameters
in
HC
patients
and
changes
after
shunt
surgery
are
regionally
different
.
HC
patients
show
an
increase
in
fractional
anisotropy
values
based
on
increases
in
parallel
diffusivity
in
the
corticospinal
tract
.
On
the
other
hand
,
reduced
fractional
anisotropy
values
are
found
in
the
corpus
callosum
of
HC
patients
.
Following
shunt
surgery
,
all
DTI
parameters
showed
a
trend
towards
normalization
,
yet
differences
to
healthy
control
subjects
remained
.
Our
results
show
that
DTI
parameter
changes
are
regionally
dependent
and
need
a
careful
interpretation
of
the
underlying
diffusivities
to
serve
as
a
diagnostic
or
follow-up
measure
in
patients
with
hydrocephalus
.
Diseases
Validation
Diseases presenting
"corpus callosum"
symptom
adrenomyeloneuropathy
alexander disease
cadasil
canavan disease
classical phenylketonuria
cohen syndrome
gm1 gangliosidosis
hirschsprung disease
hydrocephalus with stenosis of the aqueduct of sylvius
kabuki syndrome
kallmann syndrome
krabbe disease
monosomy 21
neonatal adrenoleukodystrophy
oligodontia
proteus syndrome
pyruvate dehydrogenase deficiency
wolf-hirschhorn syndrome
x-linked adrenoleukodystrophy
zellweger syndrome
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