This research study is being done to learn more about inflammation in the brain using
Positron Emission Tomography/Computed Tomography (PET/CT) imaging in people with Alzheimer's
Disease/Mild Cognitive Impairment or healthy controls.
If the subject agrees to be in this study, she/ he will have two types of PET/CT scans on the
same day. The subject may have a screening visit before the PET/CT scan visit if the
investigator needs to confirm the subject is able to be in the study.
A blood sample will be taken before the scans. Additional blood samples will be taken during
the PET scans. Subjects must also agree to have an MRI scan for this research study if she/he
has not had a recent scan that the study doctor decides can be used for this study.