Positron Emission Tomography/Computed Tomography Scan
A Positron Emission Tomography/Computed Tomography (PET/CT) scan combines two powerful and effective imaging technologies. Centegra Health System’s board-certified radiologists use the scan to track your body’s metabolic activity and to take a closer look at your anatomy. A PET/CT scan is most commonly used for the following reasons:
- To diagnose and treat patients with various cancers and neurological disorders
- To develop a treatment plan for a person’s cancer
- To provide high-quality images of tumors, the brain and the heart
What to Expect
The PET/CT scan is simple and requires little preparation on your behalf. Our compassionate Associates keep you well informed and comfortable throughout the procedure. They answer your questions and support you throughout the scan.
- The whole procedure takes about two hours.
- An injection of a tracer material is given.
An hour is needed for the tracer to circulate throughout the body.- The actual scan is about 20 minutes.
- During the hour between the injection and the scan, we provide a recliner where you can relax.
- During the scan you lie on your back.
- Most patients put their hands above their heads, but some leave them at their sides.
- You may breathe normally.
Our Newest Technology
- Centegra’s advanced PET/CT scanner is the only 64-slice PET/CT scanner in McHenry County.
- After a physician order is received, a PET/CT scan can be scheduled within 48 hours.
- Convenient hours of operation are offered five days a week.
PET/CT Scan Location
Centegra Hospital – McHenry4201 Medical Center Dr.McHenry, IL 60050(815) 344.5000
To schedule an appointment, please call (815) 334.5566.
Frequently Asked Questions
Is the injection harmful?
No. For a PET/CT scan, a small amount of radioactive tracer is injected into the body. Many people assume it is similar to a CT scan injection, but the one used for the PET/CT exam does not have any side effects. It is not an iodine contrast.
Is the scan painful?
The PET/CT scan is painless. The only minor discomfort you may feel is when the technician inserts your IV.




