Chest PET scan; Lung positron emission tomography; PET - chest;
PET - lung; PET - tumor imaging A lung positron emission
tomography (PET) scan is an imaging test that uses a radioactive
substance (called a tracer) to look for disease in the lungs,
particularly lung cancer. A PET scan requires a small amount of
radioactive material (tracer). This tracer is given through a
vein (IV), usually on the inside of your elbow. It travels
through your blood and collects in organs and tissues. The
tracer helps the radiologist see certain areas or diseases more
clearly. You will need to wait nearby as the tracer is absorbed
by your body. This usually takes about 1 hour. Then, you will
lie on a narrow table, which slides into a large tunnel-shaped
scanner. The PET scanner detects signals from the tracer. A
computer changes the results into 3-D pictures. The images are
displayed on a monitor for your doctor to read. You must lie
still during test. Too much movement can blur images and cause
errors. The test takes about 90