Dr. Gary Small answers the question: 'MRI, PET Scan for Alzheimer's Diagnosis?' May 4, 2009 -- Question: When are imaging diagnostics, such as an MRI or PET scan, used to determine whether I have ...

CT scans are used to investigate all sorts of medical issues, from checking for brain bleeding after a kid takes a hard hit on the soccer field, to revealing what a bike accident did to a cyclist’s ...