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Communication Dans Un Congrès Année : 2023

Cross-spectral matrix fitting for passive mapping of the ultrasonic cavitation based on Elastic-net regularization

Résumé

Cavitation produced by high-intensity focused ultrasound needs to be monitored for specific applications such as sonoporation. Passive acoustic mapping using adaptive or non-adaptive beamforming methods has been proposed in the literature for this task, but lacks of spatial (primarily axial) resolution. This is mainly due to the absence of a time reference, a common specificity of passive imaging compared to standard pulse-echo ultrasound. In this paper, we propose an inverse problem-based method for passive cavitation imaging, aiming to increase the spatial resolution through sparsity constraints. Results on simulated data are presented and compared to state-of-the-art approaches, such as the frequential delay-and-sum and the frequential robust Capon beamformer.
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Dates et versions

hal-04653865 , version 1 (19-07-2024)

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Célestine Lachambre, Adrian Basarab, Jean-Christophe Bera, Barbara Nicolas, François Varray, et al.. Cross-spectral matrix fitting for passive mapping of the ultrasonic cavitation based on Elastic-net regularization. 2023 IEEE International Ultrasonics Symposium (IUS 2023), Sep 2023, Montréal, Canada. ⟨10.1109/IUS51837.2023.10307601⟩. ⟨hal-04653865⟩
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