High Frame Rate Vector Velocity Estimation using Plane Waves and Transverse Oscillation

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This paper presents a method for estimating 2-D vector velocities using plane waves and transverse oscillation. The approach uses emission of a low number of steered plane waves, which result in a high frame rate and continuous acquisition of data for the whole image. A transverse oscillating field is obtained by filtering the beamformed RF images in the Fourier domain using a Gaussian filter centered at a desired oscillation frequency. Performance of the method is quantified through measurements with the experimental scanner SARUS and the BK 2L8 linear array transducer. Constant parabolic flow in a flow rig phantom is scanned at beam-to-flow angles of 90, 75, and 60◦ . The relative bias is between -1.4 % and -5.8 % and the relative std. between 5 % and 8.2 % for the lateral velocity component at the measured beam-to-flow angles. The estimated flow angle is 73.4◦± 3.6◦ for the measurement at 75◦ . Measurement of pulsatile flow through a constricted vessel demonstrate the application of the method in a realistic flow environment with large spatial and temporal flow gradients.
Original languageEnglish
Title of host publicationProceedings of IEEE International Ultrasonics Symposium
Number of pages4
Publication date2015
ISBN (Print)9781479981823
Publication statusPublished - 2015
Event2015 IEEE International Ultrasonics Symposium - Taipei, Taiwan, Province of China
Duration: 21 Oct 201524 Oct 2015


Conference2015 IEEE International Ultrasonics Symposium
CountryTaiwan, Province of China

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