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Learn more about PET and MRI

The Positron Emission Tomography (PET) is an imaging technique enabling the in vivo detection and quantification of metabolic processes. This method can be used to study the functions of the brain or its pathological change. For this, the molecules are labelled with a positron emitter (so-called radiotracer) and are administered to subjects or patients. Positron emitters are short-lived radionuclides (half-lives ranging from a few minutes to hours), which are neutron deficient and are stabilized by radioactive decay of a proton into a neutron, emitting a positron and a neutrino. These positrons are antimatter particles and lose their kinetic energy by collision until they reach their rest mass, and then annihilate by the capture of an electron. The thereby released annihilation radiation (photons radiation) penetrates the body and can be detected by the detectors of the PET camera (more information). The used positron emitters are produced in a cyclotron (more information).