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15 February 2021 Novel approach for ultrafast aberration correction and real-time speed-of-sound mapping
Hanna Bendjador, Thomas Deffieux, Mickaël Tanter
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Proceedings Volume 11602, Medical Imaging 2021: Ultrasonic Imaging and Tomography; 116020B (2021) https://doi.org/10.1117/12.2580008
Event: SPIE Medical Imaging, 2021, Online Only
Abstract
We propose here a real time approach for aberration correction and Speed Of Sound quantification in the context of ultrafast ultrasound imaging. Theoretical works demonstrate the physical meaning of Singular Value Decomposition of the Ultrafast Compound Matrix. In heterogeneous media, we show that the first spatial and angular singular vectors retrieve respectively the non-aberrated image, and the aberration law. In vitro and in vivo experiments probe the efficiency of our method for angular coherence optimization through severe aberrations. Besides correcting the image, it provides knowledge of phase and amplitude aberration, allowing also a local Speed Of Sound estimation.
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Hanna Bendjador, Thomas Deffieux, and Mickaël Tanter "Novel approach for ultrafast aberration correction and real-time speed-of-sound mapping", Proc. SPIE 11602, Medical Imaging 2021: Ultrasonic Imaging and Tomography, 116020B (15 February 2021); https://doi.org/10.1117/12.2580008
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KEYWORDS
Ultrafast imaging
Aberration correction
Ultrafast phenomena
Brain
Coherence (optics)
In vivo imaging
Liver
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