| CT | calcitonin; calf testis; cardiac tamponade; cardiothoracic [ratio]; carotid tracing; carpal tunnel; ... |
|---|---|
| DRESS | depth-resolved surface-coil spectroscopy |
| SCRF | surface coil rotating frame |
| B1 | induced field in magnetic resonance imaging; radiofrequency magnetic field in nuclear magnetic reson... |
| EPI/STAR | echo planar imaging with signal targeting and alternating radiofrequency |
| GDC | Guglielmi Detachable Coil |
|---|---|
| MC | Magnetic Coil |
| RFR | Radiofrequency Radiation |
| RF-CA | Radiofrequency catheter ablation |
| radiofrequency | 1. Radiant energy of a certain frequency range; e.g., radio and television employ radiant energy having a frequency between 105-1011 Hz, while diagnostic X-rays have a frequency in the range of 3 × 1018 Hz. 2. In magnetic resonance imaging, the energy applied to switch or create a gradient in the magnetic field. (05 Mar 2000) |
|---|---|
| radio frequency or radiofrequency | <physics> Term used to describe electromagnetic radiation with frequencies less than infrared, but greater than audio frequencies, i.e., greater than about 15,000 Hz. Wavelengths are therefore less than about 20,000 km and greater than about 0.01 mm. (These numbers are not precise.) (09 Oct 1997) |
| radiofrequency plugging | <radiobiology> Use of axial ponderomotive force to plug an open-ended device. First demonstrated on RFC-XX, Institute of Plasma Physics, Nagoya University, Nagoya, Japan, and later demonstrated in the Phaedrus device at the University of Wisconsin. (09 Oct 1997) |
| radiofrequency pulse | In nuclear magnetic resonance, a short electromagnetic signal used to change the direction of the magnetic field. See: sequence pulse. (05 Mar 2000) |
| radiofrequency trapping | <radiobiology> Use of RF waves to pitch angle scatter particles flowing axially into a magnetic mirror cell. The particles are scattered out of the loss cone and are trapped. (See entries for pitch angle scattering, magnetic mirror, loss cone.) (09 Oct 1997) |
| baseball coil | <radiobiology> Used in magnetic-mirror geometries to produce a minimum-B configuration, so-called because of their resemblance to the characteristic shape of stitches on a baseball. (09 Oct 1997) |
| random coil | A structure of a macromolecule (typically, a biopolymer) which changes with time. (05 Mar 2000) |
| rogowski loop or coil | <radiobiology> A coiled wire loop which encircles a current-carrying plasma. Changes in total plasma current induce a voltage in the loop, integrating (adding up) the voltage over time gives the plasma current. (09 Oct 1997) |
| ruhmkorff's coil | <physics> See Induction coil, under Induction. Origin: So called from its inventor, Ruhmkorff, a german physicist. Source: Websters Dictionary (01 Mar 1998) |
| coil | 1. A spiral or series of loops. 2. An object made of wire wound in a spiral configuration, used in electronic applications, or a loop of wire used as an antenna. (05 Mar 2000) |
| coil gland | A gland whose secretory part is convoluted. Synonym: convoluted gland. (05 Mar 2000) |
| poloidal field coil | <radiobiology> In toroidal devices (e.g., tokamaks), the sets of windings which are (typically) aligned along the plasma axis and produce poloidal fields. These include ohmic heating, shaping, vertical, equilibrium, and divertor windings. (09 Oct 1997) |
| helix-coil transition | <molecular biology> A change in the structure of a nucleic acid or protein molecule from a highly ordered, complex structure to a random, chaotic structure. Also means that the protein or nucleic acid becomes denatured. (09 Oct 1997) |
| surface coil | A detector coil applied directly to a body part for high resolution imaging; often a single loop of metal. (05 Mar 2000) |
| detector coil | A coil used in magnetic resonance imaging as an antenna to record radiofrequency emissions of stimulated nuclei, e.g., body coil, head coil. (05 Mar 2000) |
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