Overview A Study of Flortaucipir PET in Healthy Volunteers and Cognitively Impaired Subjects Status: Completed Trial end date: 2014-05-30 Target enrollment: Participant gender: Summary This study will test if two flortaucipir PET scans up to 4 weeks apart in healthy volunteers, MCI and AD subjects provide the same results. Phase: Phase 1 Details Lead Sponsor: Avid Radiopharmaceuticals