Everything you need to know about PET/CT
How PET/CT scans work
PET CT imaging uses a radioactive tracer called a positron emitter. A small amount of this tracer is injected into a patient’s vein. Images are then taken to show the distribution of the tracer in the body. A PET/CT scanner looks similar to a CT scanner.
A PET/CT scan can be used to examine many pathologies, including:
What to expect
The day of the PET/CT scan
2 - 3hrs
Request a PET/CT appointment
For most PET/CT scans you’ll be asked to fast for 6 hours before you arrive. You’ll be told this at the time of booking. It’s important that no food, lozenges, chewing gum, liquid medications or drinks (other than plain water) are consumed during the fasting period. Plain water is permitted and we encourage you to be hydrated. If you’re diabetic, please call us for specific instructions on when to take medication and when to start fasting. It’s important to follow these instructions as some food and medication can change the distribution of the tracer in the body.
Most medications can be taken as normal with plain water. Diabetic and liquid medications will need to be stopped for some PET/CT scans. If you take either of these, please mention it when booking so that specific instructions can be provided. Please bring a list of your medications to the appointment.