A Real-Time Ultrasound Time-Domain Correlation Blood Flowmeter: Part II—Performance and Experimental Verification

I. A. Hein, W. D. O'Brien

Research output: Contribution to journalArticle

Abstract

The theory and design of a real-time ultrasound time-domain correlation (UTDC) flowmeter employing a high-speed residue number system correlator has been presented in Part I [4] of this work. Part II evaluates the performance of the flowmeter under various flow conditions for different correlation parameter settings. Previous work has incorporated a weighted-averaging scheme to estimate the flow velocity over a wide number of echo signal spacings. This research indicates that a linear averaging of 50 adjacent echo signal pairs produces equivalent accuracy and precision at real-time processing speed as compared to previous non-real time systems incorporating weighted averaging.

Original languageEnglish (US)
Pages (from-to)776-785
Number of pages10
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume40
Issue number6
DOIs
StatePublished - Nov 1993

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

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