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During and after your exam

During the exam
 
Depending on the area of the body being examined, you may be asked to wear a gown; keep your own clothing on; or remove hearing aids and removable dental work. You will be asked a few questions about your relevant medical history and a sample of your blood will be tested for sugar level. The next step involves you being injected with radioactive sugar called fluorodeoxyglucose (FDG).
 
Before you are injected with FDG, please inform the technologist if you: 
  • may be/are pregnant or breastfeeding;
  • are taking any medications, vitamins or herbal supplements; and
  • have any allergies (to intravenous contrast material, iodine or seafood) or new illnesses/medical conditions.
After you’ve been injected with FDG with a small needle into your arm or hand, you will be asked to rest in a special area for 45 to 90 minutes to give the FDG time to get into the cells in your body. Following the waiting period, you will proceed into the scanning room and lie down on a padded table. You will be asked to lie still and follow the instructions given by the technologist.
 
Before the scan begins, the technologist will leave the room. However, he/she will be able to see you through a window and hear you through an intercom. During the scan, the table will move in and out of the scanner. The scanner will make occasional clicking, beeping and buzzing sounds. The scan may take up to 30 minutes to be completed.
 
After the exam
 
The technologist will not be able to give you the results after the scan. A radiologist will review the PET images and provide your doctor with a report within one to two days.
 
You can begin eating and drinking normally after the exam, unless you have other tests scheduled that have special instructions.

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Updated Aug 23, 2017