Adaptive Multi-Lag for Synthetic Aperture Vector Flow Imaging

Carlos Armando Villagómez Hoyos, Matthias Bo Stuart, Jørgen Arendt Jensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

268 Downloads (Pure)

Abstract

The range of detectable velocities in ultrasound flow imaging is linked to the user selection of pulse repetiti on frequency. Whenever a region with large differences in velo city magnitude is visualized, a trade-off has to be made. This work suggests an adaptive spatio-temporaly independent, m ulti- lag method, which is performed in synthetic aperture vector flow data. Measurements are made on laminar and pulsatile, transverse flow profiles. A 7 MHz linear array is connected to t he SARUS research, and acquisitions are made on a vessel phanto m with recirculating blood mimicking fluid driven by a softwar e controlled pump. A multi-lag velocity estimation is perfor med, and a lag is adaptively selected for every estimation point. Results from the constant flow compared to a true parabolic profile sho w an improvement in relative bias from 76.99% to 0.91% and standard deviation from 13.60% to 1.83% for the low velocity flow of 0.04 m/s; and relative bias from -2.23% to -1.87% and standard deviation from 3.71% to 2.29% for the high velocity flow of 0.4 m/s
Original languageEnglish
Title of host publicationProceedings of 2014 IEEE International Ultrasonics Symposium
PublisherIEEE
Publication date2014
Pages1722-1725
ISBN (Print)9781479970490
DOIs
Publication statusPublished - 2014
Event2014 IEEE International Ultrasonics Symposium - Hilton Hotel, Chicago, IL, United States
Duration: 3 Sep 20146 Sep 2014

Conference

Conference2014 IEEE International Ultrasonics Symposium
LocationHilton Hotel
CountryUnited States
CityChicago, IL
Period03/09/201406/09/2014

Cite this

Villagómez Hoyos, C. A., Stuart, M. B., & Jensen, J. A. (2014). Adaptive Multi-Lag for Synthetic Aperture Vector Flow Imaging. In Proceedings of 2014 IEEE International Ultrasonics Symposium (pp. 1722-1725). IEEE. https://doi.org/10.1109/ULTSYM.2014.0427