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- W3211680334 abstract "There has been a recent surge in methods targeting the recovery of a speed-of-sound map from pulse-echo ultrasound measurements. We focused in this work on a particular technique and identified a drawback shared by similar methods - namely the necessity of a high number of insonification - that we aim to circumvent. To do so, we first propose a beamforming procedure based on the transformation of radio-frequency data into a receive plane-wave basis. A method for extracting the local aberration phase difference caused by speed-of-sound variations is then presented. The speed-of-sound map can ultimately be recovered by inverting a measurement model. Preliminary results show that the proposed method is able to recover quantitatively similar results - a slight reduction of root-mean-square error from 9.35 m/s to 6.95 m/s on simulated data compared to an implementation of the reference method - while requiring 21 plane waves instead of 111." @default.
- W3211680334 created "2021-11-22" @default.
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- W3211680334 date "2021-09-11" @default.
- W3211680334 modified "2023-10-03" @default.
- W3211680334 title "Directional Cross-Correlation for Improved Aberration Phase Estimation in Pulse-Echo Speed-of-Sound Imaging" @default.
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- W3211680334 doi "https://doi.org/10.1109/ius52206.2021.9593870" @default.
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