title: Taking advantage of acoustic inhomogeneities in photoacoustic measurements.
abstract: This paper proposes a method for improving the localization and the quantification of the optical parameters in photoacoustic (PA) tomography of biological tissues that are intrinsically heterogeneous in both optical and acoustic properties. It is based on the exploitation of both the PA signal, generated by the heterogeneous optical structures, and the secondary acoustic echoes due to the interaction between a primary PA wave generated near the tissue surface and the heterogeneous acoustic structures. These secondary echoes can also be collected through proper measurements of the PA signals. The experimental procedure is presented along with the method to filter the signal and the reconstruction algorithm that includes the account of the acoustic information.
authors.affiliation: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, France.
authors.forename: Anabela
authors.initials: A
authors.lastname: Da Silva
authors.affiliation: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, FrancebSATT Sud Est (SATT PACA Corse SAS), 8 rue Sainte Barbe, CS 10422, 13205 Marseille Cedex 01, France.
authors.forename: Charles
authors.initials: C
authors.lastname: Handschin
authors.affiliation: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, FrancebSATT Sud Est (SATT PACA Corse SAS), 8 rue Sainte Barbe, CS 10422, 13205 Marseille Cedex 01, France.
authors.forename: Khaled
authors.initials: K
authors.lastname: Metwally
authors.affiliation: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, FrancebSATT Sud Est (SATT PACA Corse SAS), 8 rue Sainte Barbe, CS 10422, 13205 Marseille Cedex 01, France.
authors.forename: Houssem
authors.initials: H
authors.lastname: Garci
authors.affiliation: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, FrancebSATT Sud Est (SATT PACA Corse SAS), 8 rue Sainte Barbe, CS 10422, 13205 Marseille Cedex 01, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Riedinger
authors.affiliation: Aix-Marseille Université, CNRS, Ecole Centrale Marseille, LMA UPR 7051, 13402 Marseille Cedex 20, France.
authors.forename: Serge
authors.initials: S
authors.lastname: Mensah
authors.affiliation: Aix-Marseille Université, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, 13013 Marseille, France.
authors.forename: Hassan
authors.initials: H
authors.lastname: Akhouayri
mesh_terms: D000162:Acoustics; D000465:Algorithms; D061088:Photoacoustic Techniques / Q000592:standards*; D013057:Spectrum Analysis; D014054:Tomography / Q000379:methods*