Neuroimaging Flashcards
1
Q
T1 MRI
A
good to see anatomy of brain, and gray/white matter differentiation
2
Q
FLAIR
A
highlights tumor better, shows edema, but gray/white anatomy less defined
3
Q
threshold FLAIR + SPGR
A
see tumor + anatomy, only voxels above threshold limit shown
4
Q
BOLD mechanism (fMRI)
A
neural activity –> vasodilation –> more O2. strong frequency when undisturbed, low/weak when field disrupted by deox Hb.
5
Q
fMRI mapping of visual field
A
expanding image maps with visual field. colors = locations
