Common procedures
PET scan
Performed in Nuclear medicine.
What is it?
A PET scan (positron emission tomography) is an imaging exam that uses a weakly radioactive substance to show how organs are working. It is often used to study certain cancers, the heart or the brain.
What to expect
After the injection you wait about an hour before the images, and the whole visit takes about two hours. It is painless; fasting is often requested.
General information that does not replace your doctor’s advice or the instructions given before a test.
Reference source: NHS, checked on 13/11/2026. An error or an imprecision? Let us know