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Frequently Asked Questions


Why is PET/CT Beneficial?

  • The exam is painless and safe.
  • Can help differentiate between maliganant and non-maligant tumors.
  • Helps physicians detect recurrent cancer.
  • Precisely loactes and assesses the stage of the malignant disease.
  • Possibly replace multiple testing procedures.
  • Can be used to effectively plan treatment options, as well as, monitor treatment response in certain cancers.

Will I be exposed to radiation?

  • Yes, but the exposure is similar to other imaging modalities, such as CT and X-ray.

What is FDG?

  • FDG is a radioactive material that is similar to glucose (sugar).  FDG is the most commonly used imaging tracer for PET imaging.  The half-life of FDG is 110 minutes, so it is rapidly cleared through your system.

Will my insurance cover a PET/CT scan?

  • Yes, most insurance companies pay for clinically indicated PET scans. Since PET is a growing imaging modality,the data sometimes lags behind coverage police. Therefore, the indication may be covered , even though it may not be listed on a standard coverage list.  It is important to contact your insurance company to determine if the PET scan is covered.  Most insurance companies require  pre-authorization for PET scans. Physicians routinely provide relative clinical information to the insurance company to obtain the pre-authorization.

How long will the exam take?

  • You should plan to be at the PET/CT center for approximately 2 to 3 hours. However, the actual imaging time is 15 to 30 minutes, depending on type of procedure.

What can I expect on the day of my appointment?

  • Please arrive to the PET center 30 minutes prior to your scheduled appointment. The PET/CT staff will greet you. A brief medical history will be required to be completed. Your blood surgar will be checked by a finger prick test, the goal is to have the blood surgar less than 200 mg/dl. A small IV will be placed into a vein of your arm.  A small amount of radioactive glucose, called FDG, will be injected through the IV.  You will be asked to lie quietly in a room for 60 to 90 minutes.  This is considered the uptake phase of the exam.  After the uptake period, you will be asked to use the restroom to empty your bladder.  You than will be escourted to the scanner.  During the scan you will be required to lie flat on your back with both arms raised above your head.  If you think you are unable to hold your arms above your head, inform the technologist and they will work with your to make you as comfortable as possible.  You will be asked to hold very still and breath normally.  Any motion during the scan can interfere with the results.

What do I do after the exam is finished?

  • You may leave immediately after your scan is completed. Your activity will not be restricted. However, if you took medication to relax you for the test you will need someone to drive you home.  You maay resume your normal diet, excerise and take your presciption medication.  Drinking extra fluid may help eliminate any extra radioactive surgar in your system.

When will I get the results of my test?

  • A Radiologist will review your PET/CT scan. Your physician will have a written report in 2-3 business days. Your physicain should contact you with the results.
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