Neuroimag- 21 Flashcards
1
Q
2 types of neuroimaging
A
- structural
- functional
2
Q
Benefits of CT imaging
A
- early hemorrhagic lesions
- bone and calcifications
- quick procedure
- relatively cheap
3
Q
Best imaging for early hemorrhagic strokes
A
- CT scan
- MRI with gradient recalled echo (GRE) imaging
4
Q
Benefits of MRI
A
- best resolution
- no radiation
- no bone artifacts
5
Q
Use of SPECT in HIV/AIDS
A
- lymphoma vs. toxoplasmosis
- lymphoma has increased uptake
- toxoplasmosis has decreased uptake
6
Q
Neuroimaging findings in Schizophrenia
A
- enlarged lateral ventricles (most robust finding)
- reduced gray matter in prefrontal, cingulate, temporal cortices
7
Q
Neuroimaging findings in Autism Spectrum Disorder
A
-larger brain volume at birth or abnormal increase in size in first year of life
8
Q
Neuroimaging in ADHD
A
- smaller brain volume
- hypoactivity in premotor and prefrontal areas
9
Q
Neuroimaging in Reading Disorder
A
-normal size asymmetry in the planum temporale is LESS in reading disorder
10
Q
Neuroimaging in MDD
A
-smaller hippocampus
11
Q
Neuroimaging in PTSD
A
- reduced hippocampal volumes
- exaggerated amygdalar response
- decreased hippocampal activation
12
Q
Neuroimaging in OCD
A
-overactivity in orbitofrontal cortex
13
Q
Neuroimaging in Tourette’s Disorder
A
- overactivity in the prefrontal cortex and ventral striatum
- Tics: additional overactivity in motor and premotor cortex and anterior cingulate gyrus
- coprolalia: additional overactivity in Broca’s and Wernicke’s language areas
