PET/CT

What Is PET/CT?

Positron Emission Tomography (PET) and Computerized Tomography (CT) are both standard imaging tools that allow physicians to pinpoint the location of cancer within the body before making treatment recommendations.

The highly sensitive PET scan detects the metabolic signal of actively growing cancer cells in the body and the CT scan provides a detailed picture of the internal anatomy that reveals the location, size and shape of abnormal cancerous growths.

Alone, each imaging test has particular benefits and limitations but when the results of PET and CT scans are "fused" together, the combined image provides complete information on cancer location and metabolism.

For more information about PET/CT, please click here.

What do I need to do to prepare for my exam at Hoag?

Instructions for the 12 hours prior to your exam time:

1. Stay on a low carbohydrate diet.
2. Do NOT engage in any strenuous exercise.
3. Do NOT chew gum and avoid mints.
4. Refrain from consuming any caffeine, including any decaf products for 24 hours prior to your exam.

Day of the Exam

Do NOT eat anything six (6) hours prior to your appointment time. Please drink several glasses of water (2-6) and take medications. If you need to eat, please limit yourself to a small protein-only meal. If you are diabetic, please consult your doctor for questions regarding medication.

Wear warm and comfortable clothes.

You will receive an injection.

If you're having a CT, you may be asked to drink oral contrast.

You will be asked to sit quietly in the waiting room for 60-90 minutes after the injection.

Scans generally take approximately 30 minutes. In some cases, more than one scan is required; you will be notified of the number of scans at the time of injection.

Your total time commitment will be approximately 2 hours and reports should be in your doctor's office within 48 hours.

There are no residual side effects from a PET scan. On rare occasions, CT contrast may cause reaction. You will be able to drive yourself home.

Please direct any further questions to the Hoag Nuclear Medicine staff at 949/764-5536

What should I bring with me when I arrive at Hoag?

Many insurance providers require prior authorization. Please verify with your ordering physician that, if required, an authorization has been obtained, to avoid any unexpected costs, delays or cancellations.

Bring your physician's written order, insurance card and proof of pre-authorization (if applicable) with you to your appointment.

Please bring a current list of your medications, including herbal and vitamin supplements, as well as the current dose of these medications. If possible, download the PATIENT HOME MEDICATION LIST, print and complete this document prior to coming in for your scheduled appointment.