what does a pet scan diagnose
PET stands for positron emission tomography. A PET scan produces three-dimensional, colour images of your body using radionuclides (for more information on radionuclides see separate leaflet called Radionuclide Scan). PET scans show where cells are particularly active. PET can be used to diagnose various medical conditions, or to find out more about how a condition is developing. It can also be used to measure how well treatment for a condition is working.