What is PET/CT?
Positron Emission Tomography, also called PET/CT, is a diagnostic examination in which a radioactive substance (called radiotracers) is administered to the patient, and a special camera and a computer are used to help evaluate organ and tissue functions. The radiotracers localize to different areas indicating changes in tissue metabolism which is detected by the PET/CT scanner. The PET/CT scan allows radiologists to evaluate a variety of diseases anywhere in the body, including the heart and brain. By identifying body changes at the cellular level, PET/CT may help detect the early onset of disease before it is evident on other imaging tests.