title: A real-time ultrasound time-domain correlation blood flowmeter. I. Theory and design.
abstract: A real-time ultrasound time-domain correlation (UTDC) blood flowmeter has been developed. Real-time performance has been achieved through the implementation of a custom-designed high-speed residue-number system (RNS) hardware correlator. The flowmeter is interfaced to a commercial ultrasound imager and can produce one-dimensional velocity versus range graphs at a rate of three per second. It has been validated in a blood flow phantom under a variety of conditions along with in vivo measurements in the human carotid artery. The theory of the time-domain correlation technique, design and implementation of flowmeter hardware, and the important correlation parameters which affect the performance of the flowmeter are described.
authors.affiliation: Illinois Univ., Urbana, IL.
authors.forename: I A
authors.initials: IA
authors.lastname: Hein
authors.forename: J T
authors.initials: JT
authors.lastname: Chen
authors.forename: W K
authors.initials: WK
authors.lastname: Jenkins
authors.forename: W R
authors.initials: WR
authors.lastname: O'Brien