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Proceedings Paper

Phase-factor based beamforming to improve the visualization of hyper-echoic targets
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Paper Abstract

Clear visualization of hyper-echoic targets such as bone surfaces in ultrasound imaging is desirable for accurate registration of ultrasound to other imaging modalities or statistical models. Challenges such as strong reverberation, off-axis reflections and speed-of-sound variation reduce the contrast and resolution of the targets. In this paper, we propose a phase-factor based beamforming method which applies the Hilbert transform on delay compensated channel data across the receive aperture. The accumulated phase is then calculated and utilized as the weight in the beamforming output. Using this method, the reverberation artifact of a point target is reduced about 9 dB compared with other beamforming methods such as delay and sum, Wiener, minimum variance and coherent-factor based beamforming in a point target phantom study. The resolution and contrast of hyper-echoic targets are also improved in a vertebrae phantom study.

Paper Details

Date Published: 13 March 2017
PDF: 6 pages
Proc. SPIE 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography, 1013910 (13 March 2017); doi: 10.1117/12.2255590
Show Author Affiliations
Bo Zhuang, The Univ. of British Columbia (Canada)
Robert Rohling, The Univ. of British Columbia (Canada)
Purang Abolmaesumi, The Univ. of British Columbia (Canada)

Published in SPIE Proceedings Vol. 10139:
Medical Imaging 2017: Ultrasonic Imaging and Tomography
Neb Duric; Brecht Heyde, Editor(s)

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