Traumatic Brain Injury is a risk factor for Alzheimer's Disease and other dementias. This study will use neuroimaging in Veterans and civilians with a history of TBI or without TBI to understand whether some of the brain changes that occur in Alzheimer's Disease are present in people with a history of TBI. The study is recruiting male and female military Veterans or civilians with or without TBI between the ages of 30 and 65.
This study will use neuroimaging to understand how the connections in the brain change in Alzheimer's Disease. Changes will also be examined in individuals with mild cognitive impairment and healthy aging. The goal is to discover which brain changes are present in healthy aging and MCI so that future studies can assess the risk for developing Alzheimer's Disease. The study involves blood draw, cognitive testing, MRI, PET scanning, and a 1-year follow-up visit to repeat cognitive testing and MRI scanning.