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Coloured PET scans of Alzheimer's disease brain

Coloured PET scans of Alzheimer's disease brain

M108/0438

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Credit

JOHN MEYER, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY JOHN MEYER, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY

Caption

Alzheimer's disease. Coloured positron emission tomography (PET) scans of an Alzheimer's disease patient's brain. Horizontal sections of the brain are seen, taken at sequentially higher levels from 1-14. Active areas are orange and yellow, and blue and black areas show low activity. Alzheimer's di- sease is a major cause of dementia in the elderly, and causes brain degeneration and shrinkage (dark areas). PET scanning uses radioactively-labelled molecules injected into the blood, which accumul- ate in areas of high metabolic activity. Scanners detect this, allowing the study of active areas. For healthy brain PET scans see image P332/317.

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Model release not required. Property release not required.

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