power doppler
1Doppler ultrasound — n ultrasound that utilizes the Doppler effect to measure movement or flow in the body and esp. blood flow called also Doppler ultrasonography * * * a diagnostic technique that utilizes the fact that the frequency of ultrasound waves changes when… …
2Doppler ultrasound — a diagnostic technique that utilizes the fact that the frequency of sound or light waves changes when they are reflected from a moving surface (the Doppler effect). It is used to study the flow in blood vessels and the movement of blood in the… …
3Doppler cooling — is a mechanism that can be used to trap and cool atoms. The term is sometimes used synonymously with laser cooling, though laser cooling includes other techniques. Contents 1 History 2 Brief Explanation 3 Detailed Explanation …
4Doppler-Radar — Radar ist die Abkürzung für Radio Detection and Ranging (frei übersetzt: „Funkortung und abstandsmessung“), ursprünglich Radio Aircraft Detection and Ranging (frei übersetzt: „Funkbasierte Flugzeugortung und abstandsmessung“) und ist die… …
5Ecografía Doppler — Doppler tipo Espectral de la arteria carótida común. La ecografía doppler o simplemente eco Doppler, es una variedad de ultrasonido en la que, empleando el efecto Doppler, permite evaluar las ondas de velocidad de flujo de ciertas estructuras del …
6Doppler shift — In airborne Doppler radar, a transmitter which, by means of a directional antenna, radiates energy toward the ground. This results in a situation in which both the transmitter and the receiver are moving relative to the ground; consequently the… …
7Doppler effect — The change in frequency with which energy reaches a receiver when the receiver and the energy source are in motion relative to each other. Since the Doppler frequency shift is proportional to radial velocity, a radar system that measures such a… …
8Ultrasound, Doppler — A form of ultrasound that can detect and measure blood flow. Doppler ultrasound depends on the Doppler effect, a change in the frequency of a wave resulting here from the motion of a reflector, the red blood cell. There are several kinds of… …
9Transcranial doppler — (TCD) is a test that measures the velocity of blood flow through the brain s blood vessels. Used to help in the diagnosis of emboli, stenosis, vasospasm from a subarachnoid hemorrhage (bleeding from a ruptured aneurysm), and other problems, this… …
10Aggie Doppler Radar — The Aggie Doppler Radar (ADRAD) is a Doppler weather radar located on the roof of the Eller Oceanography Meteorology Building on the Texas A M University campus in College Station, Texas. History The Meteorology department first began its study… …
