Definition of SPECT. Meaning of SPECT. Synonyms of SPECT

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Definition of SPECT

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A respecter of persons
Respecter Re*spect"er (-?r), n. One who respects. A respecter of persons, one who regards or judges with partiality. Of a truth I perceive that God is no respecter of persons. --Acts x. 34.
Absorption spectrum
Spectrum Spec"trum, n.; pl. Spectra. [L. See Specter.] 1. An apparition; a specter. [Obs.] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope. (b) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum. Absorption spectrum, the spectrum of light which has passed through a medium capable of absorbing a portion of the rays. It is characterized by dark spaces, bands, or lines. Chemical spectrum, a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region. Chromatic spectrum, the visible colored rays of the solar spectrum, exhibiting the seven principal colors in their order, and covering the central and larger portion of the space of the whole spectrum. Continous spectrum, a spectrum not broken by bands or lines, but having the colors shaded into each other continously, as that from an incandescent solid or liquid, or a gas under high pressure. Diffraction spectrum, a spectrum produced by diffraction, as by a grating. Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines. Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating. Ocular spectrum. See Spectrum, 2 (b), above. Prismatic spectrum, a spectrum produced by means of a prism. Solar spectrum, the spectrum of solar light, especially as thrown upon a screen in a darkened room. It is characterized by numerous dark lines called Fraunhofer lines. Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having its own characteristic system of lines. Thermal spectrum, a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.
Aerial perspective
Aerial A*["e]"ri*al, a. [L. a["e]rius. See Air.] 1. Of or pertaining to the air, or atmosphere; inhabiting or frequenting the air; produced by or found in the air; performed in the air; as, a["e]rial regions or currents. ``A["e]rial spirits.' --Milton. ``A["e]rial voyages.' --Darwin. 2. Consisting of air; resembling, or partaking of the nature of air. Hence: Unsubstantial; unreal. 3. Rising aloft in air; high; lofty; as, a["e]rial spires. 4. Growing, forming, or existing in the air, as opposed to growing or existing in earth or water, or underground; as, a["e]rial rootlets, a["e]rial plants. --Gray. 5. Light as air; ethereal. A["e]rial acid, carbonic acid. [Obs.] --Ure. A["e]rial perspective. See Perspective.
Aspect
Aspect As"pect, n. (A["e]ronautics) A view of a plane from a given direction, usually from above; more exactly, the manner of presentation of a plane to a fluid through which it is moving or to a current. If an immersed plane meets a current of fluid long side foremost, or in broadside aspect, it sustains more pressure than when placed short side foremost. Hence, long narrow wings are more effective than short broad ones of the same area.
Aspect
Aspect As"pect, n. [L. aspectus, fr. aspicere, aspectum, to look at; ad + spicere, specere, to look, akin to E. spy.] 1. The act of looking; vision; gaze; glance. [R.] ``The basilisk killeth by aspect.' --Bacon. His aspect was bent on the ground. --Sir W. Scott. 2. Look, or particular appearance of the face; countenance; mien; air. ``Serious in aspect.' --Dryden. [Craggs] with aspect open shall erect his head. --Pope. 3. Appearance to the eye or the mind; look; view. ``The aspect of affairs.' --Macaulay. The true aspect of a world lying in its rubbish. --T. Burnet. 4. Position or situation with regard to seeing; that position which enables one to look in a particular direction; position in relation to the points of the compass; as, a house has a southern aspect, that is, a position which faces the south. 5. Prospect; outlook. [Obs.] This town affords a good aspect toward the hill from whence we descended. --Evelyn. 6. (Astrol.) The situation of planets or stars with respect to one another, or the angle formed by the rays of light proceeding from them and meeting at the eye; the joint look of planets or stars upon each other or upon the earth. --Milton. Note: The aspects which two planets can assume are five; sextile, ?, when the planets are 60[deg] apart; quartile, or quadrate, ?, when their distance is 90[deg] or the quarter of a circle; trine, ?, when the distance is 120[deg]; opposition, ?, when the distance is 180[deg], or half a circle; and conjunction, ?, when they are in the same degree. Astrology taught that the aspects of the planets exerted an influence on human affairs, in some situations for good and in others for evil. 7. (Astrol.) The influence of the stars for good or evil; as, an ill aspect. --Shak. The astrologers call the evil influences of the stars evil aspects. --Bacon. Aspect of a plane (Geom.), the direction of the plane.
Aspect
Aspect As*pect", v. t. [L. aspectare, v. intens. of aspicere. See Aspect, n.] To behold; to look at. [Obs.]
Aspect of a plane
Aspect As"pect, n. [L. aspectus, fr. aspicere, aspectum, to look at; ad + spicere, specere, to look, akin to E. spy.] 1. The act of looking; vision; gaze; glance. [R.] ``The basilisk killeth by aspect.' --Bacon. His aspect was bent on the ground. --Sir W. Scott. 2. Look, or particular appearance of the face; countenance; mien; air. ``Serious in aspect.' --Dryden. [Craggs] with aspect open shall erect his head. --Pope. 3. Appearance to the eye or the mind; look; view. ``The aspect of affairs.' --Macaulay. The true aspect of a world lying in its rubbish. --T. Burnet. 4. Position or situation with regard to seeing; that position which enables one to look in a particular direction; position in relation to the points of the compass; as, a house has a southern aspect, that is, a position which faces the south. 5. Prospect; outlook. [Obs.] This town affords a good aspect toward the hill from whence we descended. --Evelyn. 6. (Astrol.) The situation of planets or stars with respect to one another, or the angle formed by the rays of light proceeding from them and meeting at the eye; the joint look of planets or stars upon each other or upon the earth. --Milton. Note: The aspects which two planets can assume are five; sextile, ?, when the planets are 60[deg] apart; quartile, or quadrate, ?, when their distance is 90[deg] or the quarter of a circle; trine, ?, when the distance is 120[deg]; opposition, ?, when the distance is 180[deg], or half a circle; and conjunction, ?, when they are in the same degree. Astrology taught that the aspects of the planets exerted an influence on human affairs, in some situations for good and in others for evil. 7. (Astrol.) The influence of the stars for good or evil; as, an ill aspect. --Shak. The astrologers call the evil influences of the stars evil aspects. --Bacon. Aspect of a plane (Geom.), the direction of the plane.
Aspect ratio
Aspect ratio Aspect ratio (A["e]ronautics) The ratio of the long to the short side of an a["e]roplane, a["e]rocurve, or wing.
Aspectable
Aspectable As*pect"a*ble, a. [L. aspectabilis.] Capable of being; visible. ``The aspectable world.' --Ray. ``Aspectable stars.' --Mrs. Browning.
Aspectant
Aspectant As*pect"ant, a. (Her.) Facing each other.
Aspected
Aspected As*pect"ed, a. Having an aspect. [Obs.] --B. Jonson.
Aspection
Aspection As*pec"tion, n. [L. aspectio, fr. aspicere to look at.] The act of viewing; a look. [Obs.]
Brocken specter
Brocken specter Brock"en spec"ter or spectre spec"tre [Trans. of G. Brockengespenst.] A mountain specter (which see), esp. that observed on the Brocken, in the Harz Mountains.
By-respect
By-respect By"-re*spect` (b[imac]"r[-e]*sp[e^]kt`), n. Private end or view; by-interest. [Obs.] --Dryden.
Chemical spectrum
Spectrum Spec"trum, n.; pl. Spectra. [L. See Specter.] 1. An apparition; a specter. [Obs.] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope. (b) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum. Absorption spectrum, the spectrum of light which has passed through a medium capable of absorbing a portion of the rays. It is characterized by dark spaces, bands, or lines. Chemical spectrum, a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region. Chromatic spectrum, the visible colored rays of the solar spectrum, exhibiting the seven principal colors in their order, and covering the central and larger portion of the space of the whole spectrum. Continous spectrum, a spectrum not broken by bands or lines, but having the colors shaded into each other continously, as that from an incandescent solid or liquid, or a gas under high pressure. Diffraction spectrum, a spectrum produced by diffraction, as by a grating. Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines. Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating. Ocular spectrum. See Spectrum, 2 (b), above. Prismatic spectrum, a spectrum produced by means of a prism. Solar spectrum, the spectrum of solar light, especially as thrown upon a screen in a darkened room. It is characterized by numerous dark lines called Fraunhofer lines. Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having its own characteristic system of lines. Thermal spectrum, a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.
Chromatic spectrum
Spectrum Spec"trum, n.; pl. Spectra. [L. See Specter.] 1. An apparition; a specter. [Obs.] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope. (b) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum. Absorption spectrum, the spectrum of light which has passed through a medium capable of absorbing a portion of the rays. It is characterized by dark spaces, bands, or lines. Chemical spectrum, a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region. Chromatic spectrum, the visible colored rays of the solar spectrum, exhibiting the seven principal colors in their order, and covering the central and larger portion of the space of the whole spectrum. Continous spectrum, a spectrum not broken by bands or lines, but having the colors shaded into each other continously, as that from an incandescent solid or liquid, or a gas under high pressure. Diffraction spectrum, a spectrum produced by diffraction, as by a grating. Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines. Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating. Ocular spectrum. See Spectrum, 2 (b), above. Prismatic spectrum, a spectrum produced by means of a prism. Solar spectrum, the spectrum of solar light, especially as thrown upon a screen in a darkened room. It is characterized by numerous dark lines called Fraunhofer lines. Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having its own characteristic system of lines. Thermal spectrum, a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.
Circumspection
Circumspection Cir`cum*spec"tion, n. [L. circumspectio.] Attention to all the facts and circumstances of a case; caution; watchfulness. With silent circumspection, unespied. --Milton. Syn: Caution; prudence; watchfulness; deliberation; thoughtfulness; wariness; forecast.
Circumspective
Circumspective Cir`cum*spec"tive (s[~e]r`k[u^]m*sp[e^]k"t[i^]v), a. Looking around every way; cautious; careful of consequences; watchful of danger. ``Circumspective eyes.' --Pope.
Circumspectively
Circumspectively Cir`cum*spec"tive*ly, adv. Circumspectly.
Circumspectly
Circumspectly Cir"cum*spect"ly (-sp[e^]kt"l>ycr/), adv. In a circumspect manner; cautiously; warily.
Circumspectness
Circumspectness Cir"cum*spect"ness, n. Vigilance in guarding against evil from every quarter; caution. [Travel] forces circumspectness on those abroad, who at home are nursed in security. --Sir H. Wotton.
Conspectus
Conspectus Con*spec"tus (k[o^]n*sp[e^]k"t[u^]s), n. A general sketch or outline of a subject; a synopsis; an epitome.
Continous spectrum
Spectrum Spec"trum, n.; pl. Spectra. [L. See Specter.] 1. An apparition; a specter. [Obs.] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope. (b) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum. Absorption spectrum, the spectrum of light which has passed through a medium capable of absorbing a portion of the rays. It is characterized by dark spaces, bands, or lines. Chemical spectrum, a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region. Chromatic spectrum, the visible colored rays of the solar spectrum, exhibiting the seven principal colors in their order, and covering the central and larger portion of the space of the whole spectrum. Continous spectrum, a spectrum not broken by bands or lines, but having the colors shaded into each other continously, as that from an incandescent solid or liquid, or a gas under high pressure. Diffraction spectrum, a spectrum produced by diffraction, as by a grating. Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines. Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating. Ocular spectrum. See Spectrum, 2 (b), above. Prismatic spectrum, a spectrum produced by means of a prism. Solar spectrum, the spectrum of solar light, especially as thrown upon a screen in a darkened room. It is characterized by numerous dark lines called Fraunhofer lines. Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having its own characteristic system of lines. Thermal spectrum, a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.
Despect
Despect De*spect", n. [L. despectus, fr. despicere. See Despite, n.] Contempt. [R.] --Coleridge.
Despection
Despection De*spec"tion, n. [L. despectio.] A looking down; a despising. [R.] --W. Montagu.
Diffraction spectrum
Spectrum Spec"trum, n.; pl. Spectra. [L. See Specter.] 1. An apparition; a specter. [Obs.] 2. (Opt.) (a) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope. (b) A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum. Absorption spectrum, the spectrum of light which has passed through a medium capable of absorbing a portion of the rays. It is characterized by dark spaces, bands, or lines. Chemical spectrum, a spectrum of rays considered solely with reference to their chemical effects, as in photography. These, in the usual photogrophic methods, have their maximum influence at and beyond the violet rays, but are not limited to this region. Chromatic spectrum, the visible colored rays of the solar spectrum, exhibiting the seven principal colors in their order, and covering the central and larger portion of the space of the whole spectrum. Continous spectrum, a spectrum not broken by bands or lines, but having the colors shaded into each other continously, as that from an incandescent solid or liquid, or a gas under high pressure. Diffraction spectrum, a spectrum produced by diffraction, as by a grating. Gaseous spectrum, the spectrum of an incandesoent gas or vapor, under moderate, or especially under very low, pressure. It is characterized by bright bands or lines. Normal spectrum, a representation of a spectrum arranged upon conventional plan adopted as standard, especially a spectrum in which the colors are spaced proportionally to their wave lengths, as when formed by a diffraction grating. Ocular spectrum. See Spectrum, 2 (b), above. Prismatic spectrum, a spectrum produced by means of a prism. Solar spectrum, the spectrum of solar light, especially as thrown upon a screen in a darkened room. It is characterized by numerous dark lines called Fraunhofer lines. Spectrum analysis, chemical analysis effected by comparison of the different relative positions and qualities of the fixed lines of spectra produced by flames in which different substances are burned or evaporated, each substance having its own characteristic system of lines. Thermal spectrum, a spectrum of rays considered solely with reference to their heating effect, especially of those rays which produce no luminous phenomena.
Diffraction spectrum
Diffraction Dif*frac"tion, n. [Cf. F. diffraction.] (Opt.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars. Remarked by Grimaldi (1665), and referred by him to a property of light which he called diffraction. --Whewell. Diffraction grating. (Optics) See under Grating. Diffraction spectrum. (Optics) See under Spectrum.
Disrespect
Disrespect Dis`re*spect", n. Want of respect or reverence; disesteem; incivility; discourtesy. Impatience of bearing the least affront or disrespect. --Pope.
Disrespect
Disrespect Dis`re*spect", v. t. To show disrespect to. We have disrespected and slighted God. --Comber.
Disrespectability
Disrespectability Dis`re*spect`a*bil"i*ty, n. Want of respectability. --Thackeray.

Meaning of SPECT from wikipedia

- Single-photon emission computed tomography (SPECT, or less commonly, SPET) is a nuclear medicine tomographic imaging technique using gamma rays. It is...
- Tomography (SPECT) is a radionuclide based molecular imaging modality for small laboratory animals (e.g. mice and rats). Although SPECT is a well-established...
- business around the use of SPECT (single-photon emission computed tomography) imaging for diagnostic purposes. His marketing of SPECT scans and much of what...
- Gated SPECT is a nuclear medicine imaging technique, typically for the heart in myocardial perfusion imagery. An electrocardiogram (ECG) guides the image...
- the Theatre of the Oppressed, the audience becomes active, such that as "spect-actors" they explore, show, analyse and transform the reality in which they...
- (Ictal-Interictal SPECT Analysis by SPM) is an objective tool for analyzing ictal vs. interictal SPECT scans. The goal of ictal SPECT is to localize the...
- tomography (SPECT) is emplo**** in theranostics, using gamma rays emitted by a radiotracer to generate three-dimensional images of the body. SPECT imaging...
- [citation needed] SPECT studies of individuals diagnosed with CBD involve perfusion analysis throughout the parts of the brain. SPECT evaluation through...
- physiological imaging modality. Single photon emission computed tomography (SPECT) and positron emission tomography (PET) scans are the two most common imaging...
- development of radioligands allowed single-photon emission computed tomography (SPECT) and positron emission tomography (PET) of the brain. More or less concurrently...