What Is a PET/CT Scan?
Most people have heard of PET (Positron Emission Tomography) and CT (Computed Tomography) before. After all, both are standard imaging tools that physicians use to pinpoint disease states in the body.

But what is a PET/CT scan?

The PET scan demonstrates the biological function of the body, while the CT scan provides information about the body's anatomy such as size, shape and location.

By combining these two technologies, physicians can more accurately identify and treat a wide variety of disorders. This combination image is called a PET/CT scan. This combination scan provides a more complete picture, helping your doctor diagnose problems, determine the extent of disease, prescribe treatment, and track progress.

Because the PET/CT scan is used to diagnose and track a wide variety of disorders, your doctor may request a different preparation than the following, but unless your doctor has given you other instructions:

• Do not eat or drink anything besides water for 6-8 hours before your test.
• Wear warm, comfortable clothing with no metal zippers, snaps or buttons.
• Continue to take any prescribed medication unless instructed otherwise.
• Notify your physician if you are pregnant, breast-feeding or diabetic.

If you have any questions, please call us at (206) 292-7734 and we will be happy to assist you.

What to Expect During and After Your Office Visit A PET/CT scan is painless, with no side effects. You will receive an injection of a radioactive glucose and will rest for about 45 minutes while the glucose is absorbed. You will then lie on a table that passes through the scanner. The scan will typically take about 30 minutes.

Any Allergies?
Some PET/CT scans require a contrast material to help your doctor see the detail necessary for a correct diagnosis. Because contrast agents contain a form of iodine, it is important to tell the technologist if you have had an allergic reaction to this type of agent in the past.

After the exam
Once the scan is complete, the images will be interpreted by a specialized radiologist and shared with your doctor. Your doctor and the radiologist may have several conversations to discuss the results and next steps before your doctor discusses the results with you.