Alzheimer's disease, SPECT brain scan

Alzheimer's disease, SPECT brain scan

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Credit: INSTITUT PAOLI-CALMETTES, ISM/SCIENCE PHOTO LIBRARY

Caption: Alzheimer's disease, coloured SPECT scan. This is a top view of the head, with the front at top. SPECT (single positron emission computed tomography) uses a radioactive isotope, in this case technetium-99m (Tc-99m) to show the activity of brain tissue, active tissue taking up more. Alzheimer's disease is a wasting disease of brain tissue, causing progressive dementia. Brain activity is colour-coded, from red (most active) through yellow to green (least active). The most affected area is the black/green region at lower centre, in the temporal and parietal lobes. These are responsible for language skills, recognition and processing sensory information. For a similar scan of a healthy brain, see P332/430.

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Keywords: active, activity, alzheimer's, alzheimer's disease, axial, brain, brain scan, condition, degenerative, dementia, disease, disorder, emission computed tomography, gamma camera, gamma rays, healthcare, human body, lobes, medical, medicine, neuroimaging, neurological, neurology, nuclear medicine, parietal lobe, pathological, pathology, radiation, scanner, single photon, spect scan, tc-99m, technetium-99m, temporal lobe, top view, wasting

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