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Colour PET scans of the brain of a stroke patient

Colour PET scans of the brain of a stroke patient

M136/0054

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Credit

WELLCOME DEPT. OF COGNITIVE NEUROLOGY / SCIENCE PHOTO LIBRARY WELLCOME DEPT. OF COGNITIVE NEUROLOGY / SCIENCE PHOTO LIBRARY

Caption

Stroke. Coloured Positron Emission Tomography (PET) scans of the brain of a stroke patient. Twelve horizontal slices are shown, from deep brain (top left) to superficial (lower right). A lesion is seen in the left hemisphere (dark blue), an area of brain damage with reduced blood flow due to stroke. Colour-coding is: high brain activity (white); low activity (blue). Stroke, or cerebrovascular accident (CVA), is a rupture or blockage of a blood vessel causing brain damage such as loss of speech or paralysis. PET scanning uses an injected radioactive tracer (H2.O15) to show variation in metabolic activity in the brain.

Release details

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