|PET Scan of the Brain|
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Reasons for Test
- Allergic reactions to the chemicals used
- Kidney damage
What to Expect
Prior to Test
- Prepare a list of medicines you are taking; bring the list with you to the test.
- If you have diabetes , discuss taking your diabetic medicines and/or insulin with your doctor prior to the test. An abnormal blood glucose level may interfere with the tests results.
- Let your doctor know if you have kidney disease. The doctor may need to take steps to avoid kidney injury during the test.
If instructed to do so by your doctor:
- Eat a high-protein, low-carbohydrate diet for the day or so prior to your test.
- Drink about 3-4 glasses of water prior to arrival for your test.
- Do not to eat for 6-8 hours prior to your test.
- Inform the staff performing the test if you:
Description of Test
- If you have a history of anxiety in small, enclosed spaces, you may be given a light sedative to help you relax.
- An intravenous (IV) line will be placed in your arm.
- A small quantity of the tracer substance (used for the PET portion of the scan) will be injected through the IV line.
- You will wait about 45-60 minutes after this injection.
- You will be positioned on a table.
- Another injection of contrast agent (used for the CT portion of the scan) will be given.
- The table will move slowly through a doughnut-shaped ring. You will need to lie quite still for about 35 minutes while the PET/CT images are being taken.
- You should continue to drink extra water throughout the day after your scan. This helps to flush the tracer agents from your body.
- If you have received any sedation, you will need to have someone drive you home.
- You can expect to be able to resume your normal activities the same day as your test.
How Long Will It Take?
Will It Hurt?
Call Your Doctor
- Signs of allergic reaction, including flushing, hives , and itching
- Swollen or itchy eyes
- Difficulty breathing or a feeling of tightness in your throat
- Less urine than normal
National Institutes of Health http://www.nih.gov/
Radiological Society of North America http://www.radiologyinfo.org/
BC Cancer Agency http://www.bccancer.bc.ca/default.htm/
Canadian Cancer Society http://www.cancer.ca/
Adam A, Dixon A, Grainger R, Allison D. Grainger & Allison's Diagnostic Radiology: A Textbook of Medical Imaging . 5th ed. Philadelphia, PA: Saunders; 2008.
Grainger RG, Allison D, Adam A, Dixon AK, eds. Grainger & Allison’s Diagnostic Radiology: A Textbook of Medical Imaging . 4th ed. London, England: Elsevier; 2001.
Mettler FA. Essentials of Radiology . 2nd ed. Philadelphia, PA: Saunders; 2005.
Schidt GP, Kramer H, Reiser MF, Glaser C. Whole-body magnetic resonance imaging and positron-emission tomography-computed tomography in oncology. Topics in Magn Res Imaging . 2007;18:193-202.
- Reviewer: Lawrence Frisch, MD, MPH
- Review Date: 12/2011 -
- Update Date: 12/30/2011 -