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math.NA2022
A Regularized Finite-Difference Approximation of Surface-restricted Emission and Reception Process in Acoustics with Application to Inverse Problems
Ashkan Javaherian
The acoustic wave equation governs wave propagation induced by either volumetric radiation sources, or by surface sources of monopole or dipole type. For surface sources, boundary…
physics.med-ph2022
Hessian-free Ray-Born Inversion for Quantitative Ultrasound Tomography of Weakly Heterogeneous Media
Ashkan Javaherian
This study presents a frequency-domain, Hessian-free ray-Born inversion method for quantitative ultrasound tomography, extending the author's previous Hessian-based approach. Both…