gamma emission tomography

См. также в других словарях:

• Positron emission tomography — (PET) is a nuclear medicine imaging technique which produces a three dimensional image or map of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron emitting radionuclide (tracer), which is… …   Wikipedia

• Positron Emission Tomography — 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 …   Wikipédia en Français

• positron-emission tomography — n tomography in which an in vivo, noninvasive, cross sectional image of regional metabolism is obtained by a usu. color coded cathode ray tube representation of the distribution of gamma radiation given off in the collision of electrons in cells… …   Medical dictionary

• positron emission tomography — (PET, positron emission computed tomography, PECT) a technique in nuclear medicine for cross sectional imaging that enables a noninvasive assessment and localization of metabolic activity to be made. Emission of a positron by a radioisotope… …   Medical dictionary

• positron emission tomography — (PET) tomography accomplished by detection of gamma rays emitted from tissues after administration of a natural biochemical substance (e.g., glucose, fatty acids) into which positron emitting isotopes have been incorporated. The paths of the… …   Medical dictionary

• positron-emission tomography — noun Date: 1976 tomography in which a cross sectional image of regional metabolism is obtained by a usually color coded representation of the distribution of gamma radiation given off in the collision of electrons in cells with positrons emitted… …   New Collegiate Dictionary

• positron-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… …   Useful english dictionary

• positron emission tomography — the process of producing a PET scan. Cf. PET scanner. * * * ▪ imaging technique       imaging technique used in diagnosis and biomedical research. It has proved particularly useful for studying brain and heart functions and certain biochemical… …   Universalium

• positron emission tomography — noun A medical imaging technique which detects the gamma rays produced by positrons emitted from injected radionuclides …   Wiktionary

• Positron Emission Tomography — technique for creating detailed images of bodily tissues by injecting positron laden material into the body and recording the gamma rays emitted over a period of about two hours (Medicine) …   English contemporary dictionary

• Tomography — Basic principle of tomography: superposition free tomographic cross sections S1 and S2 compared with the projected image P Tomography refers to imaging by sections or sectioning, through the use of any kind of penetrating wave. A device used in… …   Wikipedia