PET: pre-scan IV injection of radioisotope

PET: pre-scan IV injection of radioisotope

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This image is part of the feature Alzheimer's

Credit: CATHERINE POUEDRAS/SCIENCE PHOTO LIBRARY

Caption: Positron emission tomography (PET) brain scanning, showing the radiographer about to inject the radioisotope & the patient's head surrounded by the detector. PET is used to study the level of function in tissues, compared to the structural information provided by computed tomography (CT) and magnetic resonance imaging (MRI). Here, a radioactive analogue of glucose (18FDG) is being used to study brain metabolism in relation to Alzheimer's disease, a type of dementia. The level of metabolic activity across the brain is represented by the amount of radioactivity detected and displayed as a colour-coded, cross-sectional image by a computer.

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Keywords: alzheimer's, alzheimer's disease, alzheimers disease, dementia, diagnostic, diagnostics, equipment, healthcare, medical, medicine, pet scan, positron emission tomography, scanner, technique

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