Presbyterian Healthcare 
Positron Emission Tomography (PET)
| PET scans help detect a wide range of cancers in addition to heart disease, epilepsy and Alzheimer's disease. |
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How does a PET scan work?
During a PET scan, two medical images are captured with one machine at the same time - a PET image and a CT image. The PET image shows the physician how the body is functioning and reveals areas of abnormal activity. The CT image shows the physician the body's anatomic structure, acting as a map to precisely locate any areas of concern. The images are combined to reveal the complete picture to the physician.
To better understand how a PET scan works, think about a satellite weather map seen on the local news. The map displays weather patterns gathered by satellites that show storm intensities.
A geographic map of North Carolina lies above this functional image to serve as a structural image. With one image on top of the other, we can see what areas are being affected by adverse weather.
What will I experiene during the procedure?
Before a PET scan, patients are injected with a small amount of radioactive glucose through a small IV. There is no danger associated with this injection, because the radiation exposure is the same as that associated with a conventional CT scan.
Once the glucose has been injected, patients are made comfortable on a recliner for 90 minutes before being positioned in the PET scanner for the pictures. Patients are asked to remain still for the duration of the examination.
To prepare for the exam
- Taking medication is okay; check with the PET center regarding diabetic medications.
- If you have diabetes, ask the doctor for specific diet recommendations for test day, since accurate results depend on normal body chemistry levels.
- Tell your doctor if you are pregnant, think you might be pregnant or if you are a nursing mother.
- Wear comfortable clothing in layers.
- Avoid all food and beverages except water for at least four hours before your scan.
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Do you have questions about PET technology? Visit our Health Library for answers. |
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Click here for more information on our PET/CT services.
Contact the PET Imaging Center at 704-384-4046 to:
- Schedule an appointment.
- Verify important procedure instructions.
Directions to the center
The PET Imaging Center is located on the Presbyterian Hospital campus. It has a separate entrance with direct access to the Center. To find the Center, enter the main hospital drive and turn right at the security booth. Parking is just outside the entrance to the PET Center.
Prior to your visit, you will be provided with an access code to enter the parking lot outside the PET Center.
