positron emission tomography
1Positron 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… …
2positron-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… …
3Positron 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 …
4positron emission tomography — noun using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain) • Syn: ↑PET • Hypernyms: ↑imaging, ↑tomography * * * the process of producing a PET scan. Cf. PET scanner. * * *… …
5positron emission tomography — pozitroninė tomografija statusas T sritis Standartizacija ir metrologija apibrėžtis Tomografija, kai įvairiomis kryptimis užregistruota pozitronų ir elektronų susidūrimo sukelta gama spinduliuotė apdorojama kompiuterinėmis programomis taip, kad… …
6positron emission tomography scanner — noun a tomograph that produces cross sectional X rays of metabolic processes in the body • Syn: ↑PET scanner • Hypernyms: ↑tomograph * * * positron emission tomography scanner ● positron …
7positron 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… …
8positron 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… …
9positron-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… …
10positron 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… …
