In photoacoustic measurements with local illumination, two photoacoustic waves are generated simultaneously: one where an absorbing abnormality is, and a second one near the interface of the tissue. This local optically generated acoustic wave, propagating from the sub-surface throughout the medium, carries information of purely acoustic nature that can be introduced, if properly filtered, as prior knowledge or constraint in the photoacoustic reconstruction process, especially if the abnormality presents also an acoustic contrast (e.g. tumors).

This presentation is part of Minisymposium “MS61 - Imaging with Light and Sound (3 parts)”
organized by: Felix Lucka (CWI & UCL) , Tanja Tarvainen (University of Eastern Finland) .

Authors:

Anabela Da Silva (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249)

Metwally Khaled (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, Marseille)

Gasteau Damien (Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249)

Mensah Serge (Aix-Marseille Université, CNRS, CNRS, Centrale Marseille, LMA UPR 7051)

Keywords:

computed tomography, image reconstruction, inverse problems, photoacoustic, prior knowledge