Brain maps, done with
magnetic resonance imaging (MRI), show the dynamic wave
of gray matter loss that occurs as patients progress
from mild to severe Alzheimer's disease (news
- web
sites), in this photograph released by UCLA February
7, 2003 in Los Angeles. Blue colors indicate brain
regions with no detectable tissue loss, red colors
denote regions with up to 10% tissue loss, and white
areas up to 20% loss. The spread of this cell loss is
detected by imaging patients sequentially with MRI.
Beginning in the temporal brain areas underlying memory
function, the deficits spread into frontal and limbic
brain regions, leaving sensory and visual cortices
spared until very late in the disease. The findings were
published by Dr. Paul Thompson of UCLA in the Journal of
Neuroscience Febraury 6, 2003. NO SALES REUTERS/Courtesy
Dr. Paul Thompson/UCLA/Handout
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