Brain in Alzheimer's disease, SPECT
Brain in Alzheimer's disease. Single-photon emission computed tomography (SPECT) scan of axial sections through the brain of a 73-year-old patient, showing reduced blood flow (red-orange) and therefore metabolic activity, in the parietal cortex (lower left and right), indicative of atrophy (wasting) associated with Alzheimer's disease.
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