From the Departments of Radiology (J.L.W., C.G.S., I.S., M.L.S., C.R.J., V.J.L.), Health Science Research (Biostatistics) (P.R.M., S.D.W.), Neurology (Speech Pathology) (J.R.D., H.M.C., R.L.U.), Psychiatry and Psychology (M.M.M.), Neurology (Behavioral Neurology) (H.B., J.G.-R., D.T.J., B.F.B., D.S.K., R.C.P., K.A.J.), and Information Technology (M.L.S.), Mayo Clinic, Rochester, MN; and Department of Neuroscience (N.E.-T.), Mayo Clinic, Jacksonville, FL. [Email]
To compare [18F]AV-1451 uptake in the semantic variant of primary progressive aphasia (svPPA) to Alzheimer dementia, and determine whether increased uptake in svPPA is associated with the presence of β-amyloid (Aβ).