Solid-State Ultrasonic Catheter-Tip Flowmeter.

Abstract

A blood flowmeter measures the difference in upstream and downstream transit times for short bursts of 10-MHz ultrasound with the two transducers required mounted in a catheter tip. This instrument can measure flow as small as 0.1 cm/s, with a response time of 5 ms. A method is proposed to measure the cross-sectional area of the vessel so that the volume flow rate and the flow velocity can be determined. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA050963

Entities

People

  • Charles L. Coleman
  • Don R. Pardue

Organizations

  • Harry Diamond Laboratories

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Properties
  • Arteries
  • Blood
  • Blood Coagulation
  • Blood Flow
  • Cardiovascular Physiological Phenomena
  • Detectors
  • Flow
  • Flow Rate
  • Frequency
  • Health Services
  • Measurement
  • Metal Oxide Semiconductors
  • Multivibrators
  • Phase Detectors
  • Square Waves
  • Transducers

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Medical Imaging.