| PSD | particle size distribution; peptone, starch, and dextrose; periodic synchronous discharge; phase-sen... |
|---|---|
| SA | salicylic acid; saline [solution]; salt added; sarcoidosis; sarcoma; scalenus anticus; secondary ame... |
| SFS | serial foveal seizures; skin and fascia stapler; social functioning schedule; spatial frequency spec... |
| CD | cadaver donor; canine distemper; canine dose; carbohydrate dehydratase; carbon dioxide; cardiac dise... |
| CDE | canine distemper encephalitis; chlordiazepoxide; color Doppler energy [imaging]; common duct explora... |
| ultrasonography, doppler, colour | Ultrasonography applying the doppler effect, with the superposition of flow information as colours on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region. (12 Dec 1998) |
|---|---|
| ultrasonography, doppler, duplex | Ultrasonography applying the doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the doppler shift frequency. (12 Dec 1998) |
| ultrasonography, doppler, pulsed | Ultrasonography applying the doppler effect, with velocity detection combined with range discrimination. Short bursts of ultrasound are transmitted at regular intervals and the echoes are demodulated as they return. (12 Dec 1998) |
| ultrasonography, doppler, transcranial | A non-invasive technique using ultrasound for the measurement of cerebrovascular haemodynamics, particularly cerebral blood flow velocity and cerebral collateral flow. With a high-intensity, low-frequency pulse probe, the intracranial arteries may be studied transtemporally, transorbitally, or from below the foramen magnum. (12 Dec 1998) |
| foetal doppler study | <radiology> Non-stress test (NST), external monitoring for 20 minutes; poor specificity, greater than4 foetal heart accelerations (greater than15 bpm over baseline for 15 seconds) following foetal movement in foetus greater than34 weeks, no heart accelerations in immaturity, sleep, maternal sedation contraction stress test (CST), external monitoring after oxytocin or maternal breast stimulation, greater than 3 uterine contraction in 10 minutes; 50% specificity uterine and umbilical artery waveform, elevated systolic:diastolic ratio = increased vascular resistance foetal aortic flow volume, 185-246 ml/kg/min see also: biophysical profile, intrauterine growth retardation (IUGR) (12 Dec 1998) |
| laser-doppler flowmetry | A method of non-invasive, continuous measurement of microcirculation. The technique is based on the values of the doppler effect of low-power laser light scattered randomly by static structures and moving tissue particulates. (12 Dec 1998) |
| absorption spectrum | <chemistry> A graph of the amount of light a substance absorbs, plotted as a fuction of energy, frequency or wavelength. (15 Jan 1998) |
| antimicrobial spectrum | See: spectrum. (05 Mar 2000) |
| broad spectrum | <pharmacology> Often used to describe an antibiotic that is effective against a wide range of microorganisms. (13 Nov 1997) |
| broad spectrum antibiotic | An antibiotic having a wide range of activity against both Gram-positive and Gram-negative organisms. (05 Mar 2000) |
| Raman spectrum | The characteristic array of light produced by the Raman effect. (05 Mar 2000) |
| visible spectrum | That part of electromagnetic radiation that is visible to the human eye; it extends from extreme red, 7606 A |
| chromatic spectrum | The continuum of colours that white light forms on passing through a prism or diffraction grating. Synonym: colour spectrum. (05 Mar 2000) |
| colour spectrum | The continuum of colours that white light forms on passing through a prism or diffraction grating. Synonym: colour spectrum. (05 Mar 2000) |
| wide spectrum | See: spectrum. (05 Mar 2000) |