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![PET scans comparing an Alzheimer’s brain with healthy brain PET scans comparing an Alzheimer’s brain with healthy brain.](https://devtestdomain3.nih.gov/sites/default/files/about-nih/discovery-into-health/alzheimers-pet-scans_0.jpg)
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PET scans comparing an Alzheimer’s brain with healthy brain
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PET scans comparing an Alzheimer’s brain with healthy brain.
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Getty Images
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Positron Emission Tomography (PET) is used in the diagnosis and treatment of brain diseases. The red color shows maximum, healthy blood flow, the yellow-green indicates less blood flow, while dark green and purple-blue areas indicate no flow.
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PET scans comparing an Alzheimer’s brain with healthy brain.