Non-invasive Intravascular Pressure Gradient Estimation using Synthetic Aperture Ultrasound

Lars Emil Haslund, Shamal Surain Kurukuladithya , Malmindi Ariyasinghe, Matthias Bo Stuart, Marie Sand Traberg, Jørgen Arendt Jensen

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Abstract

This study presents a new method for noninvasive pressure gradient estimations. It combines a new method for estimating the spatio-temporal acceleration of the flowing blood with the Navier-Stokes equation. The method is based on a double cross-correlation approach, which is hypothesized to generate more precise pressure gradients than previous methods. The acceleration is determined by cross-correlating the correlation functions attained from the velocity estimation. Data are acquired using a 5.2 MHz linear transducer in combination with a Verasonics research scanner. A permuted, pulse inverted, interleaved sequence with four virtual sources evenly distributed on the aperture is used. The performance of the method is tested on experimental data, measured on a bifurcation phantom of the common carotid artery. The pressure drop across nine flow cycles varied from -20 Pa to 40 Pa, with a standard deviation of 15.7%.
Original languageEnglish
Title of host publicationProceedings of 2021 IEEE International Ultrasonics Symposium
Number of pages4
PublisherIEEE
Publication date2021
ISBN (Electronic)978-1-6654-0355-9
DOIs
Publication statusPublished - 2021
Event2021 IEEE International Ultrasonics Symposium - Virtual Symposium, Xi'an, China
Duration: 11 Sept 202116 Sept 2021
https://ieeexplore.ieee.org/xpl/conhome/9593294/proceeding
https://2021.ieee-ius.org/

Conference

Conference2021 IEEE International Ultrasonics Symposium
LocationVirtual Symposium
Country/TerritoryChina
CityXi'an
Period11/09/202116/09/2021
Internet address

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