[Verified Answer]: A medical resident performs a PET scan on…

A medical resident performs a PET scan on a patient (75-year-old female). The resident indicates that based on the results from the PET scan, the patient definitely has Dementia of the Alzheimer’s Type (DAT). You disagree because… a) The patient is too young to have DAT b) fMRI scans are the only type of neuroimaging that can diagnose DAT definitely c) DAT cannot be definitely confirmed until neuropsychological testing is completed d) DAT cannot be definitely confirmed until autopsy