Guide To Positron Emission Tomography Scans (PET Scans)

Risks Of A PET Scan

Positron emission tomography scans have fewer risks associated with them than those of MRI scans, CT scans, and standard x-rays. A minimal amount of radiation exposure will occur during a positron emission tomography scan because a radiotracer chemical is used. Radiotracer chemicals may also be referred to as radionuclides, radiopharmaceuticals, or radioactive tracers. Radiotracers used in positron emission tomography scans are a molecule that contains glucose and an attached radioactive component.

A patient can have an allergic reaction to the substances used as the radioactive tracer. Individuals who are allergic to aspartame, saccharin, and iodine are at a greater risk of experiencing problems during their positron emission tomography scan. Asthma, heart disease, dehydration, and kidney disease patients at a greater risk of experiencing complications from a PET scan. This also applies to those who take beta-blockers, nonsteroidal anti-inflammatories, or interleukin-2.