Photo courtesy of Siemens Medical Solutions. All rights
Positron emission tomography (PET) is a test that uses a special type
of camera and a tracer (radioactive chemical) to look at organs in the
During the test, the tracer liquid is put into a vein in your arm.
The tracer moves through your body, where much of it collects in the specific
organ or tissues. The tracer gives off tiny positively charged particles
(positrons). The camera records the positrons and turns the recording into
pictures on a computer.
A PET scan may be used to look for cancer, check blood flow, or
find out how well organs are working.
How this information was developed to help you make better health decisions.