positron emission tomography
21Томография Позитронная Эмиссионная (Positron Emission Tomography (Pet)) — метод исследования, применяющийся для оценки активности тканей головного мозга. В основе данного метода лежит определение степени эмиссии радиоактивных частиц из молекул радиоактивной 2 дсоксиглюкозы. Это вещество попадает в головной мозг так же …
22positron emission tomographypositron emission comp — PET; = PECT a technique in nuclear medicine for cross sectional imaging that enables a noninvasive assessment and localization of metabolic activity to be made. Originally used to study activity in the brain, PET is now also used for… …
23tomography — [tə mäg′rə fē] n. 〚< Gr tomos, a piece cut off (see TOMY) + GRAPHY〛 a process for producing an image of a single plane of an object excluding all other planes, as by using CT SCAN or ULTRASOUND, in …
24Tomography — 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… …
25tomography — Making of a radiographic image of a selected plane by means of reciprocal linear or curved motion of the x ray tube and film cassette; images of all other planes are blurred (“out of focus”) by being relatively displaced on the film. SYN:… …
26Positron — Infobox Particle bgcolour = name = Positron (antielectron) caption = num types = composition = Elementary particle family = Fermion group = Lepton generation = First interaction = Gravity, Electromagnetic, Weak antiparticle = Electron theorized …
27positron — /poz i tron /, n. Physics. an elementary particle having the same mass and spin as an electron but having a positive charge equal in magnitude to that of the electron s negative charge; the antiparticle of the electron. Also called antielectron,… …
28tomography — n. the technique of rotating a radiation detector around the patient so that the image obtained gives additional three dimensional information. In plain film tomography the source of X rays and the photographic film move round the patient to… …
29positronemission tomography — positron emission tomography n. Abbr. PET Tomography in which a computer generated image of a biological activity within the body is produced through the detection of gamma rays that are emitted when introduced radionuclides decay and release… …
30Tomographie 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 …
