positron emission

См. также в других словарях:

• Positron emission — is a type of beta decay, sometimes referred to as beta plus ( beta;+). In beta plus decay, a proton is converted, via the weak force, to a neutron, a positron (also known as the beta plus particle , the antimatter counterpart of an electron), and …   Wikipedia

• positron emission — pozitroninis spinduliavimas statusas T sritis fizika atitikmenys: angl. positron emission; positron radiation vok. Positronenemission, f; Positronenstrahlung, f rus. испускание позитронов, n; позитронное излучение, n pranc. émission des positrons …   Fizikos terminų žodynas

• positron emission — pozitronų emisija statusas T sritis fizika atitikmenys: angl. positron emission vok. Positronenemission, f rus. испускание позитронов, n pranc. émission de positrons, f …   Fizikos terminų žodynas

• 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 — 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 — 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 — (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 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 …   Useful english dictionary

• positron 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… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

• positron 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. * * *… …   Useful english dictionary

• positron emission computed tomography — see positron emission tomography …   Medical dictionary