| ¿µ¹® | ultrasonography | ÇÑ±Û | ÃÊÀ½ÆÄ°Ë»ç¹ý |
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| CFDU | color-flow Doppler ultrasonography; color flow Doppler ultrasound |
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| DUS | diagnostic ultrasonography; Doppler flow ultrasound |
| LDF | laser Doppler flux, laser Doppler fluxometry; limit dilution factor |
| EU | Endoscopic Ultrasonography |
| RTU | real-time ultrasonography; relative time unit; renal transplantation unit |
| CDUS | Color Doppler ultrasonography |
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| CDU | Color-Doppler ultrasonography |
| TCD | TransCranial Doppler ultrasonography |
| CUS | Compression ultrasonography |
| DU | Duplex ultrasonography |
| ultrasonography, doppler | Ultrasonography applying the doppler effect, with frequency-shifted ultrasound reflections produced by moving targets (usually red blood cells) in the bloodstream along the ultrasound axis in direct proportion to the velocity of movement of the targets, to determine both direction and velocity of blood flow. (12 Dec 1998) |
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| 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) |
| Doppler ultrasonography | Application of the Doppler effect in ultrasound to detect movement of scatterers (usually red blood cells) by the analysis of the change in frequency of the returning echoes.In many instances, ultrasound has supplanted x-radiography as the imaging method of choice, because it poses no risk to patients, is noninvasive, and of moderate cost. Doppler-corrected ultrasound enables real-time viewing of tissues, blood flow, and organs that cannot be obtained by any other method. It has proved a boon to cardiology, greatly aiding evaluations of cardiovascular patients, and to obstetrics, where it is used for foetal monitoring. (05 Mar 2000) |
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| real-time ultrasonography | Rapid serial ultrasound images produced using a phased array or scanning transducer; produces a video display of organ motion, such as heart valve or foetal motion. (05 Mar 2000) |
| gray-scale ultrasonography | The display of the ultrasound echo amplitude or signal intensity as different shades of gray, improving image quality compared to the obsolete black and white presentation. (05 Mar 2000) |
| duplex ultrasonography | The combination of real-time and Doppler ultrasonography. (05 Mar 2000) |
| endovaginal ultrasonography | Pelvic ultrasonography using a probe inserted into the vagina. (05 Mar 2000) |
| ultrasonography | <investigation, procedure> A technique in which high-frequency sound waves are bounced off internal organs and the echo pattern is converted into a 2 dimensional picture of the structures beneath the transducer. (12 May 1997) |
| ultrasonography, interventional | Ultrasonography using invasive or surgical procedures. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions. (12 Dec 1998) |
| ultrasonography, mammary | Use of ultrasound for imaging the breast. The most frequent application is the diagnosis of neoplasms of the female breast. (12 Dec 1998) |
| ultrasonography, prenatal | The visualization of tissues during pregnancy through recording of the echoes of ultrasonic waves directed into the body. The procedure may be applied with reference to the mother or the foetus and with reference to organs or the detection of maternal or foetal disease. (12 Dec 1998) |
| ultrasound/ultrasonography | A test in which high-frequency sound waves (ultrasound) are bounced off tissues and the echoes are converted into a picture (sonogram). (12 Dec 1998) |
| carotid doppler | <investigation> A noninvasive test which uses high-frequency sounds waves to determine extent of blood flow through the carotid arteries in the neck. Used in the evaluation of stoke and TIA symptoms. (08 Jan 1998) |
| doppler | The use of an augmented listening device for the purpose of detecting the pulse in an extremity. Use in the evaluation of peripheral (occlusive) vascular disease. (27 Sep 1997) |
| doppler broadening | <radiobiology> Frequency spreading which causes broadening of single-frequency radiation (for example, spectral lines) when the radiating bodies (atoms, molecules, etc.) have different velocities. Radiation from each individual radiating body has a different Doppler shift, and the collection of radiations at different frequencies broadens the peak of the line in an intensity-vs-frequency plot. (09 Oct 1997) |
| Doppler, Christian | <person> Austrian mathematician and physicist in U.S., 1803-1853. See: Doppler echocardiography, Doppler effect, Doppler phenomenon, Doppler shift, Doppler ultrasonography. (05 Mar 2000) |
| Doppler colour flow | A computer-generated colour image produced by Doppler ultrasonography in which different directions of flow are represented by different hues. This technique is typically used to examine blood flow when evaluating heart disease. Where obstructions (for instance, arterial plaques) exist, blood flow will alter according to the principles of fluid mechanics. Eddies and reversals are readily apparent on the colour image. See: Doppler ultrasonography. (05 Mar 2000) |
Synonyms :
Synonyms : Color Doppler Ultrasonography, Color Ultrasonography, Doppler, Doppler Color Ultrasonography, Ultrasonography, Doppler Color
Synonyms : Doppler Duplex Ultrasonography, Duplex Doppler Ultrasonography, Duplex Ultrasonography, Doppler, Ultrasonography, Doppler Duplex
Synonyms : Doppler Pulsed Ultrasonography, Pulsed Doppler Ultrasonography, Pulsed Ultrasonography, Doppler, Ultrasonography, Doppler Pulsed
Synonyms : Sonography, Doppler Transcranial, Transcranial Doppler Sonography, Transcranial Doppler Ultrasonography, Transcranial Sonography, Doppler, Transcranial Ultrasonography, Doppler, Ultrasonography, Doppler Transcranial
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