Doppler

(redirected from color Doppler)
Also found in: Dictionary, Thesaurus.

Dopp·ler

(dop'lĕr),
Johann Christian, Austrian mathematician and physicist, 1803-1853. See: Doppler echocardiography, Doppler effect, Doppler phenomenon, Doppler shift, Doppler ultrasonography.

Dop·pler

(dop'lĕr),
A diagnostic instrument that emits an ultrasonic beam into the body; the ultrasound reflected from moving structures changes its frequency (Doppler effect). Of diagnostic value in peripheral vascular and cardiac disease.

Doppler

/Dop·pler/ (dop´ler) see under ultrasonography.

Dop·pler

(dop'lĕr)
A diagnostic instrument that emits an ultrasonic beam into the body; the ultrasound reflected from moving structures changes its frequency (Doppler effect). Of diagnostic value in peripheral vascular and cardiac disease.

Doppler

The Doppler effect refers to the apparent change in frequency of sound wave echoes returning to a stationary source from a moving target. If the object is moving toward the source, the frequency increases; if the object is moving away, the frequency decreases. The size of this frequency shift can be used to compute the object's speed—be it a car on the road or blood in an artery. The Doppler effect holds true for all types of radiation, not just sound.
Mentioned in: Abdominal Ultrasound

Doppler

an Austrian physicist and mathematician.

duplex Doppler imaging
Doppler effect
the relationship of the apparent frequency of waves, as of sound, light and radio waves, to the relative motion of the source of the waves and the observer, the frequency increasing as the two approach each other and decreasing as they move apart.
The Doppler effect can be experienced when a train whistle or automobile horn produces a continuous sound as it approaches and passes a listener. The pitch of the sound suddenly falls as the source passes the listener.
Doppler shift
the change in frequency that occurs when high frequency sound waves are reflected from a moving surface; the basis for doppler ultrasound.
References in periodicals archive ?
Hence, it has motivated to undertake the present study to evaluate the fetal growth with color Doppler velocimetry in normal and high-risk pregnancies.
All patients were examined on Esaote AU5 color Doppler machine with 6.
Role of color Doppler ultrasonography in preoperative management of cold thyroid nodules.
Uterine blood flow is an important factor contributing to uterine receptivity (7) and can be studied by means of two-dimensional (2D)-power color doppler (PCD) ultrasound (8, 9).
Instruments and methods: GE Voluson E6 color doppler ultrasonic diagnosis apparatus (General Electric Company, Fairfield City, Connecticut, USA) with 3.
By eliminating the need for multiple beats to form an image and adding volume color Doppler capabilities, the Z6Ms true volume TEE probe allows the surgeon to visualize and assess blood flow in real-time during a procedure to make sure the repaired or replaced valve is working properly, potentially reducing the need for a secondary intervention to correct any remaining regurgitation.
Recent developments and continuing refinement in color doppler imaging techniques have made possible high-quality color doppler sonography for showing blood flow and local hemodynamics in various organs.
Color Doppler sonographic evaluation of flow volume of the internal carotid and vertebral arteries after carotid endarterectomy.
The sonogram and color Doppler had been utilized by some progressive urologists over the past decade as a means to best qualitatively assess a potential CaP.
University, the test's diagnostic values are so good that a positive color Doppler should eliminate the need for second-line testing.
The normal and abnormal scrotum in children: evaluation with color Doppler sonography.