Positron emission tomography (PET) scan

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PET scan of the brain for Alzheimer's disease

Images of PET scans showing normal brain activity (left) and reduced brain activity due to Alzheimer's disease (right)

These PET scan images show normal brain activity (left) and reduced brain activity caused by Alzheimer's disease (right). The diminishing of the intense white and yellow areas in the image on the right indicates mild Alzheimer's disease, with the increase of blue and green colors showing decreased brain activity.

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