Positron Emission Tomography (PET)

ECT (Emission Computed Tomography), PET (Positron Emission Tomography) Scan

How To Prepare

Stop taking medicines and herbal remedies 24 hours before you have this test. If you take insulin to control diabetes, you may need to take less than your normal dose. Talk with your doctor about how much insulin you should take.

Do not smoke or drink caffeine or alcohol for 24 hours before this test.

Do not eat or drink for 8 hours before this test.

Tell your doctor if you are or might be pregnant or if you are breast-feeding.

Tell your doctor if you have a fear of enclosed spaces or have ever had a panic attack.

You may be asked to sign a consent form for this test. Talk to your doctor about any concerns you have regarding the need for the test, its risks, how it will be done or what the results mean. To help you understand the importance of this test, fill out the medical test information formClick here to view a form.(What is a PDF document?).


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Author: Maria G. Essig, MS, ELSLast Updated: September 11, 2007
Medical Review: Paul D. Traughber, MD - Radiology
Kenneth B. Sutherland, CD, BSc, MD, FRCPC - Diagnostic Radiology

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Topic Contents
 Test Overview
 Why It Is Done
Arrow PointerHow To Prepare
 How It Is Done
 How It Feels
 Risks
 Results
 What Affects the Test
 What To Think About
 References
 Credits