Measurement of volumetric blood flow using ultrasound time-domain correlation

The Ultrasound Time Domain Correlation (UTDC) technique can accurately and precisely estimate the volumetric fluid flow through a circular vessel without prior knowledge of the vessel diameter, flow velocity profile, or transducer measurement angle. This technique observes the change in arrival time (instead of frequency, as with Doppler techniques) of ultrasound reflected from scatterers. If a vessel with moving fluid is insonated by two ultrasonic pulses separated by time T, the scatterers within the ultrasonic beam will move some distance D between the first and second pulse. There will be a difference $\tau$ in the arrival times of the two pulses since the scatterer has moved. The scatterer velocity can be calculated from the time difference $\tau$. By sampling the velocity at different positions along the vessel, the transducer measurement angle and the volumetric flow can be calculated.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical and Computer Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Hein, Ilmar Arthur

Contributors dc:contributor

• O'Brien, William D.

• Engineering, Biomedical
• Engineering, Electronics and Electrical
• Biophysics, Medical

Statement dc:rights

• Copyright 1991 Hein, Ilmar Arthur

Language dc:language

eng

Identifier

AAI9124423
(UMI)AAI9124423

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/22603