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The prognostic role of microglia and tau PET in Alzheimer’s disease

Neuroinflammation is part of the pathophysiology of Alzheimer’s disease (AD), in addition to amyloid‐β plaques and tau neurofibrillary tangles. PET markers of microglial activation have indicated inflammation of temporo‐parietal regions, in proportion to disease severity. Here we test the prognostic value of [11C]PK11195 PET on longitudinal clinical decline in AD, alone and in combination with MRI and tau ([18F]AV‐1451) PET imaging.