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    Apparatus for vessel characterization
    3.
    发明授权
    Apparatus for vessel characterization 有权

    公开(公告)号：US10694955B2

    公开(公告)日：2020-06-30

    申请号：US16080243

    申请日：2017-02-28

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christian Haase ,  Michael Grass ,  Dirk Schaefer

    IPC: A61B5/0215 ,  A61B5/107 ,  A61B5/02 ,  A61B5/06 ,  A61B5/00 ,  G06T7/00 ,  A61B6/12 ,  A61B8/08

    Abstract: The invention discloses an apparatus (2), a system (1) and a method (100) for characterization of vessels and for vessel modeling. The cross sectional area (A1) of the vessel is derived from pressure measurements (p1, p2) obtained by an instrument (3) from within the vessel. When multiple cross sectional areas (A1, A2) are derived for multiple reference positions (r1, r2) based on pressure measurements (p1, p2, p3) along the vessel, a representation (20, 30) of the vessel can be rendered, without requiring any imaging modality. Furthermore, the effect of the pulsatile blood flow on the elasticity of the vessel walls can be visualized, supporting assessment of a stenosis or an aneurysm formation along the vessel.

    Fractional flow reserve determination
    4.
    发明授权
    Fractional flow reserve determination 有权

    公开(公告)号：US10552958B2

    公开(公告)日：2020-02-04

    申请号：US15570620

    申请日：2016-04-26

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Eberhard Sebastian Hansis ,  Holger Schmitt ,  Michael Grass ,  Dirk Schaefer ,  Hanno Heyke Homann ,  Tobias Klinder ,  Christian Haase

    IPC: G06K9/00 ,  G06T7/00 ,  G06T17/20 ,  A61B5/0215 ,  A61B5/026 ,  A61B5/00 ,  A61B6/03 ,  A61B6/00 ,  G06T7/60

    Abstract: The present invention relates to a device (1) for fractional flow reserve determination, the device (1) comprising: a model source (10) configured to provide a first three-dimensional model (3DM1) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS) and configured to provide a second three-dimensional model (3DM2) of a pressure wire insertable into the vascular vessel tree (VVT); and a processor (20) configured to calculate a first blood flow (Q1) through the stenosed vessel segment (SVS) with the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first and the second three-dimensional model and to calculate a second blood flow (Q2) through the stenosed vessel segment (SVS) without the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first three-dimensional model (3DM1) and to determine a first fractional flow reserve value (FFR1) to be measured with the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first blood flow (Q1) and to determine a second fractional flow reserve value (FFR2) to be measured without the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the second blood flow (Q1).

    Field of view matching for mobile 3D imaging
    5.
    发明授权
    Field of view matching for mobile 3D imaging 有权

    公开(公告)号：US12156756B2

    公开(公告)日：2024-12-03

    申请号：US17782871

    申请日：2020-12-02

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christian Haase ,  Christian Buerger

    IPC: A61B6/03 ,  A61B6/00 ,  A61B6/02 ,  G06T11/00

    Abstract: The present invention relates to matching a field of view for mobile 3D imaging, for example mobile C-arm 3D imaging In order to provide image data that is improved for comparing purposes, for example when using a mobile X-ray imaging system, first location information of a first reconstruction volume based on a first sequence of X-ray images of a region of interest of a subject acquired along a first trajectory in a first position of an X-ray imaging device is received. Further, a planned second trajectory for acquiring a second sequence of X-ray images in a second position of the X-ray imaging device is received and a resulting second reconstruction volume for the second sequence of X-ray images is calculated. Then, second location information for the second reconstruction volume is determined. Further, a degree of comparability for the first reconstruction volume and the second reconstruction volume is determined based on the first location information and the second location information. An adapted second trajectory is calculated that results in an increased degree of comparability of the first reconstruction volume and the second reconstruction volume. The adapted second trajectory is provided for acquiring the second sequence of X-ray images in the second position of the X-ray imaging device.

    X-ray system error tracking and calibration
    7.
    发明授权
    X-ray system error tracking and calibration 有权

    公开(公告)号：US11419571B2

    公开(公告)日：2022-08-23

    申请号：US17047103

    申请日：2019-04-05

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christian Haase ,  Michael Grass ,  Dirk Schafer

    IPC: G01D18/00 ,  A61B6/00

    Abstract: Mechanical image acquisition systems (such as medical C-arms) frequently accumulate geometrical errors which must be calibrated out using a calibration phantom. A more frequent regime of system calibration implies a less frequent use of the C-arm for clinical applications. The present application proposes to identify common biases between the acquired projection frame sequences from the same mechanical image acquisition system in first and second acquisitions, and to compare this to expected calibration data of the mechanical image acquisition system to generate frame deviation measures. If a resemblance between the first and second sequences of frame deviation measures is obtained, one or more calibration actions are performed (such as alerting the user that calibration should be provided, and/or automatically correcting for the geometry deviation).

    Signaling of an aortic valve state
    8.
    发明授权
    Signaling of an aortic valve state 有权

    公开(公告)号：US11224394B2

    公开(公告)日：2022-01-18

    申请号：US15770541

    申请日：2016-10-27

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Dirk Schaefer ,  Cherif Sahyoun ,  Eberhard Sebastian Hansis ,  Christian Haase ,  Tobias Klinder ,  Michael Grass

    IPC: A61B6/00 ,  A61B6/12 ,  A61B5/00 ,  A61B5/339 ,  A61B8/08 ,  A61B5/021 ,  A61B8/00 ,  A61B5/349

    Abstract: The invention relates to an apparatus configured to display an aortic valve image and an indicator when the aortic valve is in its open-state and/or when the valve is in its closed-state. The indicator is supposed to be in an overlay to the image of the aortic valve, such that a physician can see on the same display image the information needed to advance a guide wire or catheter through the aortic valve of a heart. This may prevent damaging ensures not to damage the aortic valve. The physician receives the relevant information, when the aortic valve is in its open-state and thus being in a state to be passed by the catheter. The information, whether the aortic valve is in its open-state or in its closed-state, corresponds to the systolic phase and the distal phase of the heart, respectively. The information, when the heart is in its systolic phase and when it is in the diastolic phase may be extracted from an ECG measurement. From the detection of these cardiac phases, the closed-state of the valve and/or the open-state of the valve can be estimated using general knowledge about flood flow during the cardiac cycle.

    Image guidance for implanted lead extraction
    9.
    发明授权
    Image guidance for implanted lead extraction 有权

    公开(公告)号：US12053334B2

    公开(公告)日：2024-08-06

    申请号：US17279269

    申请日：2019-09-20

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Michael Grass ,  Dirk Schaefer ,  Christian Haase ,  Wade Allen Bowe

    IPC: A61B90/00 ,  A61B6/00

    CPC classification number: A61B90/37 ,  A61B6/00 ,  A61B2090/365 ,  A61B2090/3762

    Abstract: The present invention relates to a device (1) for providing image data during an extraction procedure for extracting a lead from the body of a subject using an extraction device (7). The device comprises an input (2) for receiving live x-ray projection image data of the lead during the extraction procedure and for receiving three-dimensional image data as acquired before the extraction procedure. A processing unit (3) determines a position of the extraction device (7) in the three-dimensional image data by detecting the position in the live projection image data during the procedure and correlates this position in the live projection image data with the position in the three-dimensional image data. An output (4) generates an image of a cross-sectional view of the lead and/or its surrounding body structure at the determined position based on the three-dimensional image data.

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