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3 March 2022 High-resolution speed of sound estimation from ultrasound waves using extended full wave inversion
Seyed Mohsen Ranjbaran, Hossein S. Aghamiry, Ali Gholami, Stéphane Operto, Kamran Avanaki
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Proceedings Volume 11960, Photons Plus Ultrasound: Imaging and Sensing 2022; 119600V (2022) https://doi.org/10.1117/12.2612985
Event: SPIE BiOS, 2022, San Francisco, California, United States
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Abstract
Full-waveform inversion (FWI) is an imaging technique that exploits the full information content of waves, including all the phases and their relative amplitude, to get a much higher resolution than tomographic methods, which only exploit a small fraction of the data. Over the last decade, FWI has reached maturity and emerged as the leading seismic imaging technique, along with the continuous development of high-performance computing. This trend also contributes to extending FWI towards new fields such as medical imaging. In this paper, we have developed a 2D extended formulation of FWI based on the alternating direction method of multipliers (ADMM) to estimate the speed of sound (SOS) and acoustic attenuation inside a heterogeneous medium from a circular array of 128 ultrasonic transducers. Our Extended 2D FWI has shown promising results when it is compared with travel time tomography and the classical formulation of FWI.
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Seyed Mohsen Ranjbaran, Hossein S. Aghamiry, Ali Gholami, Stéphane Operto, and Kamran Avanaki "High-resolution speed of sound estimation from ultrasound waves using extended full wave inversion", Proc. SPIE 11960, Photons Plus Ultrasound: Imaging and Sensing 2022, 119600V (3 March 2022); https://doi.org/10.1117/12.2612985
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KEYWORDS
Signal attenuation
Ultrasonography
Tomography
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