title: A real-time ultrasound time-domain correlation blood flowmeter. II. Performance and experimental verification.
abstract: For Part I, see ibid., vol.40, no.6, p.768-775 (1993). The performance of a real-time ultrasound time-domain correlation (UTDC) flowmeter employing a high-speed residue number system correlator under various flow conditions for different correlation parameter settings is evaluated. Previous work has incorporated a weighted-averaging scheme to estimate the flow velocity over a wide number of echo signal spacings. The present evaluation 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.
authors.affiliation: Dept. of Electr. and Comput. Eng., Illinois Univ., Urbana, IL.
authors.forename: I A
authors.initials: IA
authors.lastname: Hein
authors.forename: W R
authors.initials: WR
authors.lastname: O'Brien