PET Brain Imaging for Dementia
Brain Metabolic Imaging with 18F FDG
Neuron-damaging diseases which cause dementia such as Alzheimer's disease, cause great changes in brain metabolism, which in turn cause abnormalities that are easily detectable on FDG PET scans.
In Alzheimer's disease there is a characteristic pattern of decreased biomarker uptake in the posterior parietotemporal cortex, which could be caused by neuronal depletion in that area. Physicians use this type of information to differentiate Alzheimer's disease from fronto-temporal and other dementia.
Amyloid Plaque Imaging with 18F Florbetapir
Now, for the first time in clinical practice, physicians can utilize PET imaging to visualize evidence of amyloid plaques when evaluating for Alzheimer's disease. 18F Florbetapir (AmyvidTM) is a radiotracer intended for use in adult patients with cognitive impairment who are undergoing clinical evaluation for Alzheimer's disease or other causes of cognitive decline.
Amyvid is injected into the bloodstream, where it crosses the blood-brain barrier and binds to amyloid plaques. The PET/CT scanner detects a positron signal produced by the radiolabeled fluorine-18 isotope and produces three dimensional images of the distribution of Amyvid in the brain.
Learn more about Alzheimer's disease and molecular imaging.
To schedule neuroimaging with 18F FDG or amyloid plaque imaging with 18F Florbetapir, call 1-888-738-3211 or 916-737-3211.