| magnetic resonance angiography | Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in cerebral angiography as well as for studies of other vascular structures. (12 Dec 1998) |
|---|---|
| Magnetic Resonance Imaging | A special imaging technique used to image internal stuctures of the body, particularly the soft tissues. An MRI image is often superior to a normal X-ray image. It uses the influence of a large magnet to polarize hydrogen atoms in the tissues and then monitors the summation of the spinning energies within living cells. Images are very clear and are particularly good for soft tissue, brain and spinal cord, joints and abdomen. These scans may be used for detecting some cancers or for following their progress. Acronym: MRI (11 Nov 1997) |
| magnetic resonance imaging, cine | A type of imaging technique used primarily in the field of cardiology. By coordinating the fast gradient-echo mri sequence with retrospective ecg-gating, numerous short time frames evenly spaced in the cardiac cycle are produced. These images are laced together in a cinematic display so that wall motion of the ventricles, valve motion, and blood flow patterns in the heart and great vessels can be visualised. (12 Dec 1998) |
| magnetic resonance scanning | A special imaging technique used to image internal stuctures of the body, particularly the soft tissues. An MRI image is often superior to a normal X-ray image. It uses the influence of a large magnet to polarize hydrogen atoms in the tissues and then monitors the summation of the spinning energies within living cells. Images are very clear and are particularly good for soft tissue, brain and spinal cord, joints and abdomen. These scans may be used for detecting some cancers or for following their progress. Acronym: MRI (11 Nov 1997) |
| magnetic resonance spectroscopy | Detection and measurement of the resonant spectra of molecular species in a tissue or sample. (05 Mar 2000) |
| magnetic stress tensor | <radiobiology> A second-rank tensor, proportional to the dyadic product of the magnetic field (B) with itself. The divergence of the magnetic stress tensor gives that part of the force which a magnetic field exerts on a unit volume of conducting fluid due to the curvature of the magnetic field lines. (09 Oct 1997) |
| magnetic switching | <radiobiology> The use as switches of saturable inductors for producing high power pulses without electrical arcs. This is a principal technology for extending single-shot accelerators in light-ion-beam-driven inertial confinement fusion to repetitively pulsed devices for possible reactors. Three terawatt, 200 KJ magnetic switches have been developed for fusion drivers at Sandia National Laboratories. (Info from the 1985 OSTI Glossary of Fusion Energy, may be out of date.) (09 Oct 1997) |
| magnetic viscosity | <physics> A magnetic field in a conducting fluid will damp fluid motions perpendicular to the field lines, similar to ordinary viscosity, even in the absence of sizeable mechanical forces or electric fields. (09 Oct 1997) |
| magnetical | 1. Pertaining to the magnet; possessing the properties of the magnet, or corresponding properties; as, a magnetic bar of iron; a magnetic needle. 2. Of or pertaining to, or characterised by, the earth's magnetism; as, the magnetic north; the magnetic meridian. 3. Capable of becoming a magnet; susceptible to magnetism; as, the magnetic metals. 4. Endowed with extraordinary personal power to excite the feelings and to win the affections; attractive; inducing attachment. "She that had all magnetic force alone." (Donne) 5. Having, susceptible to, or induced by, animal magnetism, so called; as, a magnetic sleep. See Magnetism. Magnetic amplitude, attraction, dip, induction, etc. See Amplitude, Attraction, etc. Magnetic battery, a combination of bar or horseshoe magnets with the like poles adjacent, so as to act together with great power. Magnetic compensator, a contrivance connected with a ship's compass for compensating or neutralising the effect of the iron of the ship upon the needle. Magnetic curves, curves indicating lines of magnetic force, as in the arrangement of iron filings between the poles of a powerful magnet. Magnetic elements. <chemistry> Those elements, as iron, nickel, cobalt, chromium, manganese, etc, which are capable or becoming magnetic. <physics> A disturbance of the earth's magnetic force characterised by great and sudden changes. Magnetic telegraph, a telegraph acting by means of a magnet. See Telegraph. Origin: L. Magneticus: cf. F. Magnetique. Source: Websters Dictionary (01 Mar 1998) |
| magnetically | By or as by, magnetism. Source: Websters Dictionary (01 Mar 1998) |
| magnetically insulated transmission line | <radiobiology> Used to transport power efficiently in vacuum lines at very high power densities. Although the cathode is a space-charge limited electron emitter, the electron flow is confined by self-generated or applied magnetic fields. MITL's are used extensively in light-ion-driven inertial confinement fusion. (09 Oct 1997) |
| magneticalness | Quality of being magnetic. Source: Websters Dictionary (01 Mar 1998) |
| magnetician | One versed in the science of magnetism; a magnetist. Source: Websters Dictionary (01 Mar 1998) |
| magnetics | The science of magnetism. Source: Websters Dictionary (01 Mar 1998) |
| magnetic induction |
magnetization: the process that makes a substance magnetic (temporarily or permanently) magnetic field strength: the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
출처: wordnet.princeton.edu/perl/webwn
|
|---|---|
| magnetic field |
the lines of force surrounding a permanent magnet or a moving charged particle
출처: wordnet.princeton.edu/perl/webwn
|
| magnetic resonance imaging |
Magnetic resonance imaging (MRI) - also called magnetic resonance tomography (MRT) - is a method of creating images of the inside of opaque organs in living organisms as well as detecting the amount of bound water in geological structures. It is primarily used to demonstrate pathological or other physiological alterations of living tissues and is a commonly used form of medical imaging. ...
출처: en.wikipedia.org/wiki/Magnetic_resonance_imaging
|
| magnetic flux |
Magnetic flux, is a measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field. The flux through an element of area perpendicular to the direction of magnetic field is given by the product of the magnetic field density and the area element. More generally, magnetic flux is defined by a scalar product of the magnetic field density and the area element vector. ...
출처: en.wikipedia.org/wiki/Magnetic_flux
|
| magnetic resonance imaging |
MRI. A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body. These pictures can show the difference between normal and diseased tissue. MRI makes better images of organs and soft tissue than other scanning techniques, such as CT or x-ray. MRI is especially useful for imaging the brain, spine, the soft tissue of joints, and the inside of bones. Also called nuclear magnetic resonance imaging.
출처: www.stjude.org/glossary
|
| magnetic | (physics) a current loop gives rise to a magnetic field characteristic of a magnetic dipole |
|---|---|
| magnetic | (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored |
| magnetic | (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored |
| magnetic | an imaginary line paralleling the equator where a magnetic needle has no dip |
| magnetic | the lines of force surrounding a permanent magnet or a moving charged particle |
| magnetic | the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow |
| magnetic | the lines of force surrounding a permanent magnet or a moving charged particle |
| magnetic | a measure of the strength of a magnetic field over a given area |
| magnetic | the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow |
| magnetic | a measure of the strength of a magnetic field per unit area |
| magnetic | attraction for iron |
| magnetic | an electromagnet (as on a tape recorder) that converts electrical variations into magnetic variations that can be stored on a surface a later retrieved |