PET/CT
Precise And Accurate Nuclear Imaging Techniques
PET/CT is a type of nuclear medicine that combines positron emission tomography (PET) and computed tomography (CT) scan techniques into a single scan. Through this singular imaging procedure, our nuclear radiologists are able to examine details about the overall function of an organ or part of the body as well as its anatomical, or structural, information all in one scan.
What Are Some Common Uses Of PET/CT?
PET/CT is a versatile imaging tool used across multiple medical subspecialties to provide detailed insights into abnormalities and anatomy/structures. Common uses include:
Benefits Of PET/CT
PET/CT and nuclear medicine scans are types of molecular imaging with an array of unique tests to help manage various medical conditions. PET/CT is a valuable tool for radiologists when it comes to diagnostic medicine. Advantages include:
How Does It Work?
A combined PET/CT scanner combines these technologies to show both function and structure. Together, they can help our nuclear radiologists pinpoint exactly where abnormal metabolic activity occurs within the body.
The PET component uses a small amount of radioactive tracer, such as FDG, that our radiologist first injects into the body. The PET scanner detects gamma rays from the tracer and shows metabolic or biochemical activity in tissues.
CT uses X-rays to create detailed cross-sectional images of the body’s internal structures. It provides precise anatomical localization of abnormalities detected on the scan.
What Does A PET Scanner Look Like?
The PET scanner machine is large and resembles a CT or MRI machine, with a round hole in the middle. Patients lie on the exam table in the center of the machine. After our radiologist carefully and comfortably injects the tracer, the machine will rotate around your body and take images from multiple angles. You may need to stay completely still for several minutes at a time, or shift into several different positions during the procedure as directed by our team.
Preparing For Your PET/CT Scan
You may need to prepare ahead of time for some of these examinations. Our team will provide specific instructions about what to expect during your PET/CT scan ahead of the procedure. We will review your health history including any medications you take, recent illnesses or procedures, as well as any allergies. Tell us if you are pregnant, could be pregnant or are breastfeeding. Patients who are breastfeeding or pregnant will receive special instructions ahead of their scan, as will patients who have diabetes.
The day of the exam, wear comfortable clothing and remove all jewelry. You may also need to take out your hearing aids or certain dental appliances, such as dentures. You can drink water ahead of your scan but should avoid sugary drinks. Avoiding eating for about 4 to 6 hours ahead of time, or as directed by our team. Food can interfere with the scan and necessitate a repeat scan.
Are There Any Risks?
Potential risks are slight when compared to potential benefits. They include exposure to radiation, although the overall amount is low, possible allergic reactions and slight irritation in the injection site.
Have Questions About Your Scan? Contact Us!
If your doctor has ordered a PET/CT or nuclear medicine study for you, and you are wondering about how you might need to prepare for the exam, please contact the imaging center where your scan is scheduled or call us at (757) 466-0089.
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