text: Flortaucipir (F) is a radioactive diagnostic agent for adults with cognitive impairment who are being evaluated for Alzheimers disease. It is indicated for positron emission tomography (PET) imaging of the brain to estimate the density and distribution of aggregated tau neurofibrillary tangles (NFTs), a primary marker of Alzheimers disease.
  Flortaucipir (F) is not indicated for use in the evaluation of people for chronic traumatic encephalopathy (CTE).