Radioactive glucose must pass multiple quality control measures before it is used for any patient injection. The radiation exposure associated with PET is similar to that associated with a conventional CT scan. After the injection, you will wait about an hour, while the injected material is distributed throughout your body. Then, you will be asked to lie on a table that passes slowly through the scanner. The scanner resembles a CT scanner, but has a much larger opening.
Some people fall asleep during the scan.
Wear comfortable clothing. Tell your doctor if you are diabetic. Wear your hearing aid, glasses or dentures to the PET center. However, leave valuables at home or in your patient room. Take any prescribed medications on the day of your test unless instructed not to do so.