| Doppler u. |
that in which the shifts in frequency between emitted ultrasonic waves and their echoes are used to measure the velocities of moving objects, based on the principle of the Doppler effect. The waves may be continuous or pulsed; the technique is frequently used to examine cardiovascular blood flow (Doppler echocardiography). See also pulsed wave Doppler u., continuous wave Doppler u., and color flow Doppler imaging, under imaging.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Doppler ultrasonic f. |
a device for measuring blood flow by noting the Doppler effect in ultrasonic waves reflected off moving red blood cells. Called also ultrasonic or ultrasound Doppler f.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Doppler |
A type of ultrasound that measures blood flow.
출처: www.childrensheartcenter.org/hearthealth/glossary....
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| Doppler |
A diagnostic tool that uses low intensity ultrasound to detect blood flow velocity in arteries or veins.
출처: www.brighamandwomens.org/vasculardiagnosticlab/ter...
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| Doppler effect |
The change in frequency of waves emitted by an object as it moves. For example, as an emergency vehicle approaches the sirens get louder and as the vehicle moves away the sirens fade out.
출처: inkido.indiana.edu/a100/glossary2.html
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