Doppler, Christian J.

(redirected from Doppler principle)


Christian J., Austrian mathematician and physicist in U.S., 1803-1853.
Doppler bidirectional test
Doppler echocardiography - use of Doppler ultrasonography techniques to augment two-dimensional echocardiography by allowing velocities to be registered within the echocardiographic image. Synonym(s): duplex echocardiography
Doppler effect - a change in frequency is observed when the sound and observer are in relative motion away from or toward each other. Synonym(s): Doppler phenomenon; Doppler principle
Doppler flow test
Doppler measurement
Doppler phenomenon - Synonym(s): Doppler effect
Doppler principle - Synonym(s): Doppler effect
Doppler probe
Doppler pulse evaluation
Doppler scope
Doppler shift - the magnitude of the frequency change in hertz when sound and observer are in relative motion away from or toward each other.
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.
Doppler ultrasound flowmeter
Doppler ultrasound segmental blood pressure testing
References in periodicals archive ?
According to the Doppler principle, the moving red blood cell backscattered light rays are subjected to a frequency shift where this is not the case for static tissue.
A meter utilizing the Doppler principle requires "particles" in the flow stream to reflect waves.
So, utilizing the Doppler principle, we are able to measure our universe and gauge the speed with which we approach or depart any other star system in the universe.
The new instrument uses the same Doppler principle as that employed in radar guns.
Automatic Cardiac Output enables the measurement of cardiac output and stroke volume based on color Doppler principles to obtain the highest sensitivity of color information for increased accuracy and diagnostic confidence.