Positron
71positron decay — see under emission …
72positron emission tomography — pos′itron emis sion tomog raphy n. med the process of producing a PET scan Compare PET scanner …
73positron emission tomography — noun tomography which relies on radioactive tracers injected into the patient, so as to detect abnormal biochemical activity. Also, PET …
74positron emission tomography scan — PET scan. A procedure in which a small amount of radioactive glucose (sugar) is injected into a vein, and a scanner is used to make detailed, computerized pictures of areas inside the body where the glucose is used. Because cancer cells often use …
75positron-emission tomography — ¦ ̷ ̷ ̷ ̷ ˌ ̷ ̷ ̷ ̷ ¦ ̷ ̷ ̷ ̷ noun : tomography in which an in vivo, noninvasive, cross sectional image of regional metabolism is obtained by a usually color coded video representation of the distribution of gamma radiation given off in the… …
76Electron-positron annihilation — occurs when an electron and a positron (the electron s anti particle) collide. The result of the collision is the conversion of the electron and positron and the creation of gamma ray photons or, less often, other particles. The process must… …
77Large Electron-Positron Collider — The Large Electron Positron Collider (LEP) was one of the largest particle accelerators ever constructed.It was built at CERN, a multi national center for research in nuclear and particle physics near Geneva, Switzerland. LEP was a circular… …
78Large Electron–Positron Collider — LEP redirects here. For other uses, see LEP (disambiguation). The former LEP tunnel at CERN being filled with magnets for the LHC The Large Electron–Positron Collider (LEP) was one of the largest particle accelerators ever constructed. It was… …
79Tomographie par émission de positron — Tomographie par émission de positons Pour les articles homonymes, voir TEP. Reconstruction tridimensionnelle de la distribution de glucose marqué au fluor 18 telle que mesurée par tomographie d émission de positons La tomographie …
80Tomographie à émission de positron — Tomographie par émission de positons Pour les articles homonymes, voir TEP. Reconstruction tridimensionnelle de la distribution de glucose marqué au fluor 18 telle que mesurée par tomographie d émission de positons La tomographie …
