 The Imaging DementiaEvidence for Amyloid Scanning IDEAS Study will establish an open-label, longitudinal cohort study to assess the impact of amyloid PET on patient outcomes. The study will be performed in accordance with the Center for Medicare Medicaid Services CMS policy of Coverage with Evidence Development CED in Medicare beneficiaries who meet the Appropriate Use Criteria AUC for amyloid PET Johnson et al. 2013. Our hypothesis is that amyloid PET will decrease uncertainty and increase confidence in the underlying cause of cognitive impairment, that this will translate into earlier counseling and interventions in these domains, and that these interventions will lead to improved outcomes. 