| contrast enema | Enema using barium or another contrast medium. (05 Mar 2000) |
|---|---|
| contrast enhancement | The intravenous administration of water-soluble iodinated contrast material, which increases the CT number of the vascular pool, as well as some lesions (particularly in the brain), due to abnormal leakage into the interstitium; the property of showing increased radiopacity from concentration of contrast medium. (05 Mar 2000) |
| contrast material | A substance that is introduced into or around a structure and, because of the difference in absorption of X-rays by the contrast medium and the surrounding tissues, allows radiographic visualisation of the structure. (18 Nov 1997) |
| contrast media | <radiology> Side-effects from high osmolality / viscosity (fluid shifts from different compartments), vasodilatation, heat, pain, osmotic diuresis, haemodynamic changes, pharmacokinetics, distribute volume into extracellular space, clearance by glomerular filtration and renal excretion, physiologic reaction, increased plasma osmolality causes fluid shift from RBCs and pulmonary tissue leading to increased plasma volume, then osmolar gradient reverses with passage of contrast bolus to pulmonary capillary endothelium leaks protein into pulmonary interstitium leading to increased pulmonary oedema, transient cardiovascular changes (magnitude increased with tonicity of medium), increased PAP, increased CO with decreased peripheral/pulmonary vascular resistance, decreased systemic arterial pressure (variable), may activate gen receptors causing side effects (12 Dec 1998) |
| contrast medium | A substance that is introduced into or around a structure and, because of the difference in absorption of X-rays by the contrast medium and the surrounding tissues, allows radiographic visualisation of the structure. (18 Nov 1997) |
| contrast sensitivity | The ability to detect sharp boundaries (stimuli) and to detect slight changes in luminance at regions without distinct contours. Psychophysical measurements of this visual function are used to evaluate visual acuity and to detect eye disease. (12 Dec 1998) |
| contrast stain | <technique> A dye used to colour one portion of a tissue or cell which remained unaffected when the other part was stained by a dye of different colour. Synonym: differential stain. (05 Mar 2000) |
| contrast transfer function | <microscopy> A mathematical function that expresses the ability of an optical or electronic device to transfer signals faithfully as a function of the spatial or temporal frequency of the signal. The modulation transfer function is the ratio of percentage modulation of a sinusoidal signal leaving to that entering the device over the range of frequencies of interest. The modulation transfer function is usually presented as a graph of modulation transfer function versus log (frequency). For a square wave signal, the function is known as the CTF. Acronym: MTF (26 Mar 1998) |
| contrastimulant | 1. Annulling the effect of a stimulant. 2. An agent whose action opposes that of a stimulant. (05 Mar 2000) |
| contrasuppressor cells | A subpopulation of T-cells, distinct from T helper cells, which inhibit T suppressor cell function. (05 Mar 2000) |
Synonyms : Proteins, Contractile
Synonyms : Contract
Synonyms : Contractures
Synonyms : Media, Contrast, Media, Radiopaque
Synonyms : Contrast Sensitivity, Visual, Sensitivity, Contrast, Sensitivity, Visual Contrast
| contraction band |
one of the bands seen by light microscopy in fully contracted muscle on either side of the Z band, caused by distortion of the ends of the myosin filaments by the Z band.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| contralateral sign |
Brudzinski's s., def. 2.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| contra- |
The octave below normal.
출처: library.thinkquest.org/2791/MDCTARY/A-C.htm
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| contraceptive |
a chemical agent or device that prevents conception or pregnancy.
출처: www.ehealthmd.com/library/acne/ACN_glossary.html
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| contract |
A legal instrument reflecting a relationship between the United States Government and a State, a local government, or other recipient when (1) the principal purpose of the instrument is to acquire (by purchase, lease, or barter) property or services for the direct benefit or use of the United States Government; or (2) the agency decides in a specific instance that the use of a procurement contract is appropriate. (31 USC 6303)
출처: https://radius.rand.org/radius/demo/glossary.html
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| contra | (law) a party to a contract |
|---|---|
| contra | the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps |
| contra | relating to or part of a binding legal agreement |
| contra | by virtue of a contract |
| contra | an abnormal and usually permanent contraction of a muscle |
| contra | perform a contradance |
| contra | prove negative |
| contra | be resistant to |
| contra | deny the truth of |
| contra | be in contradiction with |
| contra | the speech act of contradicting someone |
| contra | (logic) a statement that is necessarily false |