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    Compressive sensing in forming ultrasound images
    1.
    发明授权
    Compressive sensing in forming ultrasound images 有权

    公开(公告)号：US11467272B2

    公开(公告)日：2022-10-11

    申请号：US15522807

    申请日：2015-10-30

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Jean-Luc Robert

    IPC: G03B42/06 ,  G01S7/52 ,  G01S15/89

    Abstract: In an image compressing ultrasound system, for generating an imaging sample, delays are applied transducer-element-wise to respective time samples. The delayed samples are summed coherently in time, the coherently summed delays being collectively non-focused. An image is sparsified based on imaging samples and, otherwise than merely via said imaging samples, on angles (236) upon which respectively the delays for the generating of the imaging samples are functionally dependent. An image-compressing processor (120) may minimize a first p-norm of a first matrix which is a product of two matrices the content of one representing the image in a compression basis. The minimizing is subject to a constraint that a second p-norm of a difference between a measurement matrix and a product of an image-to-measurement-basis transformation matrix, an image representation dictionary matrix, and the matrix representing the image in the compression basis does not exceed an allowed-error threshold. The measurement matrix is populated either by channel data, or by output of a Hilbert transform applied to the channel data in a time dimension.

    Device for interventional acoustic imaging
    2.
    发明授权
    Device for interventional acoustic imaging 有权

    公开(公告)号：US11266374B2

    公开(公告)日：2022-03-08

    申请号：US16066323

    申请日：2016-12-30

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Shyam Bharat ,  Ramon Quido Erkamp ,  Man Nguyen ,  Jean-Luc Robert ,  Sheng-Wen Huang ,  Jochen Kruecker

    IPC: A61B8/08 ,  A61B8/00 ,  A61B34/20 ,  A61B17/34

    Abstract: An acoustic probe connectable to an imaging system. The acoustic probe has a substrate with first and second principal surfaces, at least one device insertion port comprising an opening passing through the substrate from the first principal surface to the second principal surface, and an array of acoustic transducer elements supported by the substrate and disposed around the at least one device insertion port. The acoustic probe comprising an instrument guide disposed within the device insertion port, the instrument guide being configured to selectively allow the interventional device to move freely within the device insertion port and to selectively lock the interventional device within the device insertion port in response to a user input via a user interface connected to the acoustic probe.

    Autocorrelation guided cross-correlation in ultrasound shear wave elastography
    3.
    发明授权
    Autocorrelation guided cross-correlation in ultrasound shear wave elastography 有权

    公开(公告)号：US10588604B2

    公开(公告)日：2020-03-17

    申请号：US15311553

    申请日：2015-05-11

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Hua Xie ,  Shiwei Zhou ,  Jean-Luc Robert ,  Vijay Thakur Shamdasani

    IPC: A61B8/08 ,  G01S7/52 ,  A61B8/00

    Abstract: Ultrasound motion-estimation includes issuing multiple ultrasound pulses, spaced apart from each other in a propagation direction of a shear wave, to track axial motion caused by the wave. The wave has been induced by an axially-directed push. Based on the motion, autocorrelation is used to estimate an axial displacement. The estimate is used as a starting point (234) in a time-domain based motion tracking algorithm for modifying the estimate so as to yield a modified displacement. The modification can constitute an improvement upon the estimate. The issuing may correspondingly occur from a number of acoustic windows, multiple ultrasound imaging probes imaging respectively via the windows. The autocorrelation, and algorithm, operate specifically on the imaging acquired via the pulses used in tracking the motion caused by the wave that was induced by the push, the push being a single push. The algorithm may involve cross-correlation over a search area incrementally increased subject to an image matching criterion (S358).

    AUTOCORRELATION GUIDED CROSS-CORRELATION IN ULTRASOUND SHEAR WAVE ELASTOGRAPHY
    6.
    发明申请
    AUTOCORRELATION GUIDED CROSS-CORRELATION IN ULTRASOUND SHEAR WAVE ELASTOGRAPHY 审中-公开

    公开(公告)号：US20170079620A1

    公开(公告)日：2017-03-23

    申请号：US15311553

    申请日：2015-05-11

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Hua Xie ,  Shiwei Zhou ,  Jean-Luc Robert ,  Vijay Thakur Shamdasani

    IPC: A61B8/08 ,  G01S7/52 ,  A61B8/00

    CPC classification number: A61B8/5215 ,  A61B8/4245 ,  A61B8/4477 ,  A61B8/485 ,  G01S7/52022

    Abstract: Ultrasound motion-estimation includes issuing multiple ultrasound pulses, spaced apart from each other in a propagation direction of a shear wave, to track axial motion caused by the wave. The wave has been induced by an axially-directed push. Based on the motion, autocorrelation is used to estimate an axial displacement. The estimate is used as a starting point (234) in a time-domain based motion tracking algorithm for modifying the estimate so as to yield a modified displacement. The modification can constitute an improvement upon the estimate. The issuing may correspondingly occur from a number of acoustic windows, multiple ultrasound imaging probes imaging respectively via the windows. The autocorrelation, and algorithm, operate specifically on the imaging acquired via the pulses used in tracking the motion caused by the wave that was induced by the push, the push being a single push. The algorithm may involve cross-correlation over a search area incrementally increased subject to an image matching criterion (S358).

    System and method for probe calibration and interventional acoustic imaging
    7.
    发明授权
    System and method for probe calibration and interventional acoustic imaging 有权

    公开(公告)号：US11331070B2

    公开(公告)日：2022-05-17

    申请号：US16066082

    申请日：2016-12-21

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Ramon Quido Erkamp ,  Man Nguyen ,  Jean-Luc Robert ,  Sheng-Wen Huang ,  Shyam Bharat ,  Jochen Kruecker

    IPC: A61B8/08 ,  A61B8/00 ,  G01S15/89 ,  G01S7/52

    Abstract: A system includes an acoustic probe and an acoustic imaging machine. The acoustic probe includes a substrate with first and second principal surfaces, a device insertion port with an opening passing through the substrate from the first principal surface to the second principal surface, and an array of acoustic transducer elements supported by the substrate and disposed around the device insertion port. The acoustic imaging machine may systematically vary the size and/or position of the active acoustic aperture of the probe by providing transmit signals to selected acoustic transducer elements to cause the array to transmit an acoustic probe signal to an area of interest and may record a feedback signal of the transmit signals from an acoustic receiver provided at a distal end of an interventional device passed through the device insertion port into the area of interest to find an active acoustic aperture having optimal acoustic performance.

    Rapid synthetic focus ultrasonic imaging with large linear arrays
    8.
    发明授权
    Rapid synthetic focus ultrasonic imaging with large linear arrays 有权

    公开(公告)号：US11199625B2

    公开(公告)日：2021-12-14

    申请号：US16309601

    申请日：2017-06-12

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Jean-Luc Robert ,  Man Nguyen ,  Ramon Quido Erkamp ,  Sheng-Wen Huang ,  Emil George Radulescu

    IPC: G01S15/89 ,  G01S7/52

    Abstract: An ultrasonic diagnostic imaging system and method translates an aperture across an array transducer which is less that the size of the array. At each aperture location a transmit beam is focused above, or alternatively below, the array and a region of interest being scanned from the aperture location, resulting in broad insonification of the region of interest. At the lateral ends of the array the aperture is no longer translated but the focal point of the transmit beam is translated from the same aperture position, preferably with tilting of the beam direction. Multiple receive beams are processed in response to each transmit event and the overlapping receive beams and echo locations are spatially combined to produce synthetic transmit focusing over the center of the image field and noise reduction by spatial compounding at the lateral ends of the image field.

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