3 papers
math.NA2026
A Reciprocity-Law-Compliant Photoacoustic Forward-Adjoint Operator
Ashkan Javaherian
We extend the forward-adjoint operator framework derived in our previous study to photoacoustic tomography (PAT). In that earlier work, the acoustic forward operator included a rec…
math.NA2025
Introduction and Numerical Validation of an Open-Source MATLAB Package for Quantitative Ultrasound Tomography via Ray-Born Inversion
Ashkan Javaherian
We present a MATLAB package for reconstructing sound-speed images from transmission ultrasound data. The package is based on two-point ray tracing and implements two complementary…
physics.med-ph2025
The First In Vitro and In Vivo Validation of the Hessian-Free Ray-Born Inversion for Quantitative Ultrasound Tomography
Ashkan Javaherian
This study presents the first experimental validation of a Hessian-free ray-Born inversion technique for quantitative reconstruction of sound speed from transmission ultrasound dat…