Utility of Amyloid Imaging in Predicting Progression from Mild Cognitive Impairment to Dementia Lead Investigator: Warren Barker Institution : Mount Sinai Medical Center E-Mail : billy@msmc.com Proposal ID : 1243 Proposal Description: The goal of this proposed study is to use data from NACC to estimate the rate of progression from MCI to dementia, following objective memory testing, a structural MRI scan, and an Am-PET scan. In addition, this study aims to show the extent to which an Am-PET scan performed after objective memory testing and an MRI scan (the most likely clinical sequence), would increase or decrease the clinician?s pre-test confidence of progression to dementia.