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blood velocity meter [1 record]

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Record 1 2012-05-16

English

Subject field(s)
  • Medical Instruments and Devices
  • Ultrasonography
  • Cardiovascular System
CONT

Blood Velocity Meter. A continuous ultrasonic wave in the megahertz region is scattered as it passes through blood. The back-scattered part of the signal can be collected by a receiving transducer next to the transducer emitting the continuous waves, and the returning signal will be shifted in frequency in proportion to the velocity of the blood in the vessel. This Doppler frequency shift can be detected and applied to a frequency meter (e.g. zero crossing detector) or frequency analyzer to produce a signal proportional to blood velocity.

Key term(s)
  • blood-velocity meter

French

Domaine(s)
  • Instruments et appareillages médicaux
  • Ultrasonographie
  • Système cardio-vasculaire

Spanish

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