Coloured PET scan of the brain of a stroke patient

Coloured PET scan of the brain of a stroke patient

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Credit: DEPT. OF NUCLEAR MEDICINE, CHARING CROSS HOSPITAL/SCIENCE PHOTO LIBRARY

Caption: Stroke. Coloured Positron Emission Tomography (PET) scan of the brain of a stroke patient. This is a horizontal section through the brain. Colour- coding is: high brain activity (red to yellow); low activity (green to blue). At centre left is a lesion (green/light blue) showing an area of brain damage with reduced blood flow and low activity due to stroke. Stroke, or cerebrovascular accident (CVA), is a rupture or blockage of a blood vessel causing brain damage such as loss of speech or paralysis usually affecting one side of the brain. In PET scanning a radioactive tracer is injected into the blood to reveal activity in the brain.

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Keywords: blood vessel, brain, cerebrovascular acc., cerebrovascular acciden, cerebrovascular accident, condition, cva, disease, disorder, healthcare, medical, medicine, neuroimaging, pet, pet scan, stroke, vascular

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