Positron Emission Tomography (PET)

Submitted by thomas.johnson on Fri, 05/22/2015 - 11:34
PET scans use radiopharmaceuticals to create 3 dimensional images. The decay of the radiotracers used with PET scans produce small particles called positrons. When positrons react with electrons in the body they annihilate each other. This annihilation produces two photons that shoot off in opposite directions. The detectors in the PET scanner measure these photons and use this information to create images of internal organs.