Health & Aging Brain Study – Health Disparities Get Involved Eligibility: Are you a Candidate? Español 30 + You must be 30 years or older. Imaging You must be willing and able to undergo an MRI and a PET scan. Availability You must be available over a three day period (non-consecutive is ok) for a total of 8-9 hours. 30 + You must be 30 years or older. Demographics Hispanic, African American or Non-Hispanic White Imaging You must be willing and able to undergo an MRI and a PET scan. Avalibili