This advanced imaging test can help detect disease in its earliest stages.
A positron emission tomography (PET) scan is an imaging test used to detect and monitor signs of cancer, heart disease, and brain disorders such as Alzheimer’s disease. It utilizes a small and safe amount of a radioactive chemical called a radiotracer, which is administered through an IV. Because diseased cells absorb more of the radiotracer than healthy ones, the radiotracer becomes concentrated in the areas of the body where disease is present. A scanner then detects this radiation and produces images of the affected organs and tissue – pinpointing the presence and location of disease. PET scans are sometimes used in combination with computed tomography (CT) scans, referred to as a PET-CT.
How Does It Work?
First, you will receive an IV injection of the radiotracer and rest for 30 minutes to an hour while it is absorbed. You will then lie down on a padded table, which will slide through the PET scanner – a large, round machine – as it takes images. This process takes around 30 minutes and is painless. Afterward, a radiologist will review the scans and report their findings to your healthcare team. PET scans are typically an outpatient procedure, allowing you to return home the same day.
The Benefits of PET Scans
PET scans are a highly effective method of detecting cancer and other diseases in their earliest stages and can catch disease before it shows up on other imaging tests, such as a CT or MRI scan. The results of a PET scan help inform providers in developing an accurate, detailed diagnosis and personalized plan and assess the effectiveness of treatment.
An Expert Weighs In
Meet the Author
Rachel Studebaker, BA, English, Summa Cum Laude
Rachel Studebaker is a graduate of Lee University where she earned a Bachelor of Arts degree in English with a minor in advertising. While attending Lee, Rachel served as editor-in-chief and creative director for the school’s biannual publication Vindagua and was a member of Sigma Tau Delta English Honors Society. As managing editor for CMC Media & Marketing Group, she is responsible for the development and completion of 16 publications involving health, wellness, business, sports, and lifestyle articles published in print and online for HealthScope®, CityScope®, and Choose Chattanooga® magazines – premier publications serving S.E. Tennessee and North Georgia. Additionally, Rachel has led digital marketing initiatives for CMC Media & Marketing Group as well as the development of content for the introduction of Choose Huntsville™, Huntsville Resource & Relocation Guide™ for Huntsville, Alabama.
