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    METHODS AND SYSTEMS FOR NON-INVASIVELY CHARACTERISING A HETEROGENEOUS MEDIUM USING ULTRASOUND
    1.
    发明申请
    METHODS AND SYSTEMS FOR NON-INVASIVELY CHARACTERISING A HETEROGENEOUS MEDIUM USING ULTRASOUND 有权

    公开(公告)号：US20220003721A1

    公开(公告)日：2022-01-06

    申请号：US17261095

    申请日：2019-07-16

    申请人： Centre National de la Recherche Scientifique ,  ECOLE SUPÉRIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS

    发明人： Alexandre Aubry ,  Amaury Badon ,  Victor Barolle ,  Claude Boccara ,  Laura Cobus ,  Mathias Fink ,  William Lambert

    IPC分类号： G01N29/46 ,  G01N29/44 ,  G01N29/06

    摘要： In a first aspect, the present description relates to a system for non-invasively characterizing a heterogeneous medium using ultrasound, comprising at least one first array (10) of transducers configured to generate a series of incident ultrasound waves in a region of said heterogeneous medium and record the ultrasound waves which are backscattered by said region as a function of time, as well as a computing unit (42) which is coupled to said at least one first array of transducers and configured to: record an experimental reflection matrix defined between an emission basis at the input and the basis of the transducers at the output; determine, from said experimental reflection matrix, at least one first wideband reflection matrix defined in a focused base at the input and output; determine a first distortion matrix defined between said focused basis and an observation basis, said first distortion matrix resulting, directly or after a change of basis, from the term-by-term matrix product of said first wideband reflection matrix defined between said focused basis and an aberration correction basis, with the phase-conjugated matrix of a reference reflection matrix defined for a model medium, between the same bases; determine, from said first distortion matrix, at least one mapping of a physical parameter of said heterogeneous medium.

    Methods and systems for non-invasively characterizing a heterogeneous medium using ultrasound
    5.
    发明授权
    Methods and systems for non-invasively characterizing a heterogeneous medium using ultrasound 有权

    公开(公告)号：US11346819B2

    公开(公告)日：2022-05-31

    申请号：US17261095

    申请日：2019-07-16

    申请人： Centre National de la Recherche Scientifique ,  ECOLE SUPÉRIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS

    发明人： Alexandre Aubry ,  Amaury Badon ,  Victor Barolle ,  Claude Boccara ,  Laura Cobus ,  Mathias Fink ,  William Lambert

    IPC分类号： G01N29/46 ,  G01N29/06 ,  G01N29/44

    摘要： In a first aspect, the present description relates to a system for non-invasively characterizing a heterogeneous medium using ultrasound, comprising at least one first array (10) of transducers configured to generate a series of incident ultrasound waves in a region of said heterogeneous medium and record the ultrasound waves which are backscattered by said region as a function of time, as well as a computing unit (42) which is coupled to said at least one first array of transducers and configured to: record an experimental reflection matrix defined between an emission basis at the input and the basis of the transducers at the output; determine, from said experimental reflection matrix, at least one first wideband reflection matrix defined in a focused base at the input and output; determine a first distortion matrix defined between said focused basis and an observation basis, said first distortion matrix resulting, directly or after a change of basis, from the term-by-term matrix product of said first wideband reflection matrix defined between said focused basis and an aberration correction basis, with the phase-conjugated matrix of a reference reflection matrix defined for a model medium, between the same bases; determine, from said first distortion matrix, at least one mapping of a physical parameter of said heterogeneous medium.