| CRT | cadaveric renal transplant; cardiac resuscitation team; cathode-ray tube; certified; Certified Recor... |
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| CWXSP | Coal Workers' X-ray Surveillance Program |
| CX | cervix; chest x-ray; connexin; critical experiment |
| CXR, CxR | chest x-ray |
| DD | dangerous drug; data definition; day of delivery; degenerated disc; degenerative disease; delusional... |
| X-ray generator | The electronic device that controls production of X-rays in radiography; a key function is rectification of line voltage to produce a smooth direct current voltage to the X-ray tube. (05 Mar 2000) |
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| X-ray intensifying screens | Screens which absorb the energy in the X-ray beam that has penetrated the patient and convert this energy into a light pattern which has as nearly as possible the same information as the original x-ray beam. The more light a screen produces for a given input of x-radiation, the less X-ray exposure and thus shorter exposure time are needed to expose the film. In most film-screen systems, the film is sandwiched between two screens in a cassette so that the emulsion on each side is exposed to the light from its contiguous screen. (12 Dec 1998) |
| X-ray, lateral | An X-ray picture taken from the side. (12 Dec 1998) |
| X-ray microanalysis | A technique of elemental analysis in the electron microscope based on spectral analysis of the scattered X-ray emission from the specimen induced by the electron beam. Using this technique it is possible to obtain quantitative data on, for example: the calcium concentration in different parts of a cell, but it is necessary to use ultra thin frozen sections. (18 Nov 1997) |
| X-ray microscope | <instrument> A microscope in which images are obtained by using X-rays as an energy source that are recorded on a very fine-grained film, or the image is enlarged by projection; if film is used, it may be examined with the light microscope at fairly high magnifications. (05 Mar 2000) |
| X-ray, pa | An X-ray picture in which the beams pass from back-to-front (posteroanterior). By contrast an ap (anteroposterior) film is one in which the rays pass through the body from front-to-back. (12 Dec 1998) |
| X-ray therapy | Radiation therapy using X-rays; sometimes used ironically to refer to excessive use of diagnostic radiation. (05 Mar 2000) |
| slow ray | <microscopy> The slower of the two rays created by a crystal or fibre and the one that travels the path of higher refractive index. (05 Aug 1998) |
| spectrometry, X-ray emission | Identification and measurement of concentration of elements based on the fact that X-rays emitted by an excited element have a wavelength characteristic of that element and an intensity related to its concentration. It includes fluorescence, or secondary-emission, X-ray spectrometry, in which the specimen is irradiated by X-rays. Primary-emission x-ray spectrometry, in which the specimen is bombarded by electrons, is a specific type of X-ray emission spectrometry known as electron probe microanalysis. (12 Dec 1998) |
| densitometry, X-ray | Measurement of the degree of darkening of X-ray film by means of a photocell which measures light transmission through the film. (12 Dec 1998) |
| incident ray | The ray that strikes the surface before reflection. (05 Mar 2000) |
| infrared ray | See: infrared. (05 Mar 2000) |
| fast ray | <microscopy> The fast ray or fast component for a crystal or fibre corresponds to the lower refractive index. (05 Aug 1998) |
| lateral X-ray | An X-ray picture taken from the side. (12 Dec 1998) |
| Raymond-Cestan syndrome |
see under syndrome.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Raynaud's d. |
a primary or idiopathic vascular disorder characterized by bilateral attacks of Raynaud's phenomenon; it affects females more often than males. Called also Raynaud's gangrene.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Raynaud's disease (gangrene), phenomenon, sign |
see under disease and phenomenon, and see acrocyanosis.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Raynaud's g. |
Raynaud's disease (def. 1).
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Raynaud's p. |
intermittent bilateral ischemia of the fingers, toes, and sometimes ears and nose, with severe pallor and often paresthesias and pain, usually brought on by cold or emotional stimuli and relieved by heat; it is usually due to an underlying disease or anatomical abnormality. When it is idiopathic or primary it is called Raynaud's disease.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| ray | cyanosis of the extremities |
|---|---|
| ray | a synthetic silklike fabric |
| ray | women's stockings made from a sheer material (nylon or rayon or silk) |
| ray | women's stockings made from a sheer material (nylon or rayon or silk) |