PET Brain

Nuclear medicine exam to determine areas of brain dysfunction. The radiopharmaceutical used is a form of glucose (fluorodeoxyglucose or FDG.)


  • Tumor
  • Alzheimer's disease

Note: Tumors may be difficult to detect using FDG because of the high normal uptake of sugar in the brain.


  • PET exams require careful preparations with respect to diet and exercise. Click here for an outline of the PET preparations. (See bottom of linked page.)
  • Diabetics may need special consideration and should discuss the preparation with their doctor.


  • Wednesdays are preferred.
  • Injection and scan are one hour apart.
  • Procedure time is approximately two to three hours.