what is a doppler dictionary
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Doppler radar Definition of Doppler radar. : a radar system that utilizes the Doppler effect for measuring velocity.
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- Definition of DOPP. variant spelling of dop. ADVERTISEMENT. This word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.his word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.
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Forecasting Questions Doppler Radar detects precipitation intensity, wind direction and speed, and provides estimates of hail size and rainfall amounts. Doppler Radar gives forecasters the capability of providing early detection of severe thunderstorms that may bring strong damaging winds, large hail, heavy rain, and possibly tornadoes.
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Learn about the Doppler Effect What Is the Doppler Effect We Hear about in Astronomy? The Doppler effect is a shift in the frequency or wavelength of radiation emitted from an object as it moves with respect to an observer. It's named after Austrian physicist Christian Doppler who first proposed it in 1842.
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The Doppler Effect What is the Doppler Effect? The Doppler effect is observed whenever the source of waves is moving with respect to an observer. The Doppler effect can be described as the effect produced by a moving source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching and an apparent downward shift in frequency for observers from whom the source is receding.
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- During the Doppler examination, the ultrasound beams will evaluate the flow of blood as it makes it way though and out of the heart. This information is presented visually on the monitor (as color images or grayscale tracings and also as a series of audible signals with a swishing or pulsating sound)..
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Doppler Exam: Venous A venous Doppler ultrasound is a diagnostic test used to check the circulation in the large veins in the legs (or sometimes the arms). This exam shows any blockage in the veins by a blood clot or “thrombus” formation.
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Doppler ultrasound: What is it used for? Answers from Sheldon G. Sheps, M.D. A Doppler ultrasound is a noninvasive test that can be used to estimate the blood flow through your blood vessels by bouncing high-frequency sound waves (ultrasound) off circulating red blood cells. A regular ultrasound uses sound waves to produce images, but can't show blood flow. A Doppler ultrasound may help diagnose many conditions, including: Blood clots. Poorly functioning valves in your leg veins, which can cause blood or other fluids to pool in your legs (venous insufficiency)
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Doppler Physics The Doppler Effect. In clinical routine, Doppler echocardiography is used used to measure velocities and direction of blood flow in the heart chambers and vessels according to the Doppler effect, which was described by Christian Doppler. He discovered that stars appear of different colours when observed from a constant position on earth.
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Doppler ultrasound pulse wave Doppler ultrasound. a technique in which the transducer emits ultrasound in pulses. Blood flow velocities so measured are limited to around the physiologic range (up to approximately 1.5 meters/second) but the depth from which the returning echoes originate can be accurately determined. spectral Doppler ultrasound
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- Pulsed (gated) and spectral Doppler Pulsed Doppler ultrasound is a technique for measuring the velocity of blood in a small sample volume (Figure 1). Shown in Figure 2 is the spectral Doppler measurement of blood flow in the common carotid artery.he location of the Doppler sample volume is illustrated by a cursor overlaid on the B-mode image shown as Figure 1. To provide a localised velocity measurement, the instrument transmits a pulse that is 6 wavelengths to 40 wavelengths long-depending on the desired length of the sample volume.
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How to Post a Screenshot to Twitter Click Browse to find the screenshot you previously saved, add a message up to 114 characters if desired and confirm your posting options. You can post the image to your Twitter account or post it with the location data, if applicable. Click Upload to publish your screenshot.lick Browse to find the screenshot you previously saved, add a message up to 114 characters if desired and confirm your posting options. You can post the image to your Twitter account or post it with the location data, if applicable. Click Upload to publish your screenshot.
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- Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content. Link to this page: <a href=http://www.thefreedictionary.com/duplex+Doppler+ultrasound>ultrasound</a>.
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LDV Systems Laser Doppler velocimetry is a well proven technique that measures fluid velocity accurately and non invasively. Laser Doppler velocimetry is a well proven technique that measures fluid velocity accurately and non invasively
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Ultrasound scan A special type of ultrasound scan, called a Doppler ultrasound, is used to detect the speed and direction of blood flow in certain regions of the body, for example, neck arteries and leg veins. Medical issues and ultrasound scans Some ultrasound examinations require special preparation beforehand, such as:
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The Journal of the American Board of Family Medicine Transcranial Doppler (TCD) is a diagnostic tool that can be used at bedside to assess the cerebral vasculature noninvasively. It is inexpensive, safe, and reliable when compared with other techniques. It can be repeated multiple times and can be used for continuous monitoring if needed.
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The Doppler Effect The Doppler effect can be observed for any type of wave - water wave, sound wave, light wave, etc. We are most familiar with the Doppler effect because of our experiences with sound waves. Perhaps you recall an instance in which a police car or emergency vehicle was traveling towards you on the highway.
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Doppler radar 1 An example of Doppler radar is what a policeman would use to evaluate the speed of an oncoming vehicle. 2  An example of Doppler radar is what an astronomer would use to measure the speed of a moving star.
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echocardiography echocardiography. color Doppler echocardiography color flow Doppler imaging. contrast echocardiography that in which the ultrasonic beam detects tiny bubbles produced by intravascular injection of a liquid or a small amount of carbon dioxide gas.
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Abdominal Ultrasound with Doppler Abdominal Ultrasound with Doppler. Your doctor has requested an abdominal ultrasound exam with Doppler. Ultrasound is a safe and painless procedure that uses sound waves to see inside your body. Doppler allows our specialists to evaluate the blood flow through the arteries and veins of your abdomen. The scan can help diagnose obstructions in the blood flow to your abdominal organs, as well as helping to detect conditions such as abdominal masses, gallbladder disease, and gallstones, as well as problems in the liver, kidneys, pancreas or spleen.
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Doppler ultrasound spectral Doppler ultrasound. a form of ultrasound image display in which the spectrum of flow velocities is represented graphically on the Y-axis and time on the X-axis; both pulse wave and continuous wave Doppler are displayed in this way.
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Doppler effect duplex Doppler imaging. see doppler ultrasound. 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.
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- His Doppler Effect is the shift in frequency and wavelength of waves which results from a source moving with respect to the medium, a receiver moving with respect to the medium, or even a moving medium.
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- dor·sal (dôr′səl) adj. 1. Anatomy Of, toward, on, in, or near the back or upper surface of an organ, part, or organism. 2. Botany Of or on the surface of an organ or part facing away from the axis; abaxial.
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Doppler 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.
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Doppler echocardiography Doppler echocardiography. Doppler echocardiography is a procedure that uses ultrasound technology to examine the heart or blood vessels. An echocardiogram uses high frequency sound waves to create an image of the heart while the use of Doppler technology allows determination of the speed and direction of blood flow by utilizing the Doppler effect.