How Is A Pet Scan Performed?

What is a PET scan and how long does it take?

How long does a PET scan take?

After the radiotracer is injected into a vein, it usually takes up to one hour to travel throughout the body and be absorbed into the organs or tissues that are being examined.

The PET scan itself may take another 30 to 60 minutes.

Heart and brain studies take less time for imaging.

What does a PET scan machine look like?

A PET scanner is a large machine with a round, donut-shaped hole in the middle. It looks similar to a CT or MRI unit. Multiple rings of detectors inside the machine record the energy emissions from the radiotracer in your body. The CT scanner is typically a large, donut-shaped machine with a short tunnel in the center.

Do all cancers show up on PET scan?

Not all cancers show up on a PET scan. PET scan results are often used with other imaging and lab test results. Other tests are often needed to find out whether an area that collected a lot of radioactive material is non-cancerous (benign) or cancerous (malignant).

Is PET scan painful?

PET scans are often used to diagnose a condition or to track how it is developing. Used alongside a CT or MRI scan, it can show how a part of the body is working. A scan is not painful, but patients should not consume any food for at least 4 to 6 hours before a scan. They should drink plenty of water.