Study describes Alzheimer's disease-like changes in elderly people without the disease

The emergence of multiple new brain imaging technologies and the combined application of these new approaches is helping to create new insights into ageing and Alzheimer's disease. One of the hallmarks of Alzheimer's disease is the deposition of amyloid beta protein in clumps or 'plaques' within the brain. These plaques can be measured in humans with PET scans that use a chemical marker or radiotracer called 11C-PIB...

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