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    Guidance device for a tee probe
    1.
    发明授权
    Guidance device for a tee probe 有权

    公开(公告)号：US10939881B2

    公开(公告)日：2021-03-09

    申请号：US15318235

    申请日：2015-06-10

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Dirk Schäfer ,  Eberhard Sebastian Hansis ,  Niels Nijhof ,  Michael Grass

    IPC: A61B6/12 ,  A61B8/08 ,  A61B8/00 ,  A61B34/20 ,  A61B8/12 ,  A61B6/00 ,  A61B8/14

    Abstract: The present invention relates to a guidance device (10) for a TEE probe (20), a medical imaging system (1), a method for guiding a TEE probe (20), a computer program element for controlling such device and a computer readable medium having stored such computer program element. The guidance device (10) for a TEE probe (20) comprises an image data provision unit (11), and a processing unit (12). The image data provision unit (11) is configured to provide first image data showing an interventional device (40) and a TEE probe (20) in an initial position and orientation. The processing unit (12) is configured to determine a centerline of the interventional device (40) in the first image data. The processing unit (12) is configured to determine a plane (41) orthogonal to a tangent of the centerline as viewing plane. The processing unit (12) is configured to calculate an imaging plane and an imaging orientation of the TEE probe (20) to lie approximately in the viewing plane. The processing unit (12) is configured to provide the calculated data as guidance data.

    Device for projecting a guidance image on a subject
    2.
    发明授权
    Device for projecting a guidance image on a subject 有权

    公开(公告)号：US10769787B2

    公开(公告)日：2020-09-08

    申请号：US16063920

    申请日：2016-12-22

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Michael Grass ,  Dirk Schäfer ,  Thirukumaran Thangaraj Kanagasabapathi ,  Bernardus Hendrikus Wilhelmus Hendriks

    IPC: G06K9/00 ,  G06T7/00 ,  A61B90/00 ,  G06T7/11 ,  G06T7/33 ,  A61B6/00 ,  A61B8/08 ,  A61B34/20 ,  A61B17/00

    Abstract: The present invention relates to providing a projection data for providing a guidance image. In order to provide an enhanced guiding image technique for generating a guidance image of the patient's anatomy to be projected on the body surface of the patient, such that a at least a basis for a corrected guidance image for a better correlation to the patient's current motion can be provided, in particular to the patient's current breathing motion state, a device (10) for providing a projection data set is provided that comprises a storage means (12), an input interface (14), a processing unit (16) and an output interface (18). The storage means is configured to store a pre-determined basis data set representing a 3D tomographic image of a subject (20). The input interface is configured to receive reference data representing a current spatial depiction at least of a target region (22) of the subject. The processing unit is configured to register the reference data on the pre-determined basis data set. The processing unit is further configured to transform, based on the reference data and the result of the registration, the pre-determined basis data set resulting in a working data set representing a transformed 3D tomographic image indicating the current spatial anatomy relation at least for the target region of the subject. The processing unit is also configured to segment the working data set resulting in a projection data set representing the target region of the subject. Still further, output interface is configured to provide the projection data set for a further purpose.

    Interventional X-ray system with automatic iso-centering
    5.
    发明授权
    Interventional X-ray system with automatic iso-centering 有权

    公开(公告)号：US10172574B2

    公开(公告)日：2019-01-08

    申请号：US15039680

    申请日：2014-10-27

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Dirk Schäfer ,  Robert Johannes Frederik Homan ,  Michael Grass

    IPC: A61B6/08 ,  A61B6/04 ,  A61B6/00 ,  A61B90/00 ,  A61B6/02 ,  A61B5/00

    Abstract: An interventional X-ray system (10), includes a processing unit (30), a table (20) for receiving a patient (44), an X-ray image acquisition device (12) having an X-ray source (16) and an X-ray detector (18) and at least one optical camera (46) adapted for acquiring optical images of a patient (44) situated on the table (20) and for providing image data to the processing unit (30). The processing unit (30) is adapted for segmenting an outline (64) of a patient from an existing three-dimensional model, for receiving acquired images from the at least one camera (46) for determining an optical outline (66) of the patient, for registering the optical outline (66) to the outline (64) obtained in the segmentation and for determining a translation vector (48) representing a required movement of the table for coinciding a center (42) of the anatomy of interest given in the three-dimensional model with the iso-center (38) of a rotational X-ray scan that will be performed. By this process, no X-ray exposure or injection of contrast agent is required.

    C-ARM SYSTEM WITH EXTENDED FIELD OF VIEW
    6.
    发明申请
    C-ARM SYSTEM WITH EXTENDED FIELD OF VIEW 有权
    具有扩展视野的C-ARM系统

    公开(公告)号：US20140321612A1

    公开(公告)日：2014-10-30

    申请号：US14356899

    申请日：2012-11-09

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Dirk Schäfer ,  Michael Grass

    IPC: A61B6/02

    CPC classification number: A61B6/022 ,  A61B6/032 ,  A61B6/4441

    Abstract: The present invention relates to a C-arm X-ray imaging system. In order to provide C-arm systems with an extended three-dimensional field of view, a C-arm X-ray imaging system (10), provided to acquire extended three-dimensional images of an object, is provided, comprising a C-arm structure (12) with an X-ray source (14) and an X-ray detector (16) mounted across from the X-ray source, a motorized drive (22) for a rotational movement of the C-arm structure, and a control unit (26). The C-arm structure is provided to perform a rotational scan around an axis of rotation and around an ISO-centre acquiring a number of X- ray projections in order to generate image data for a reconstructed three-dimensional field of view. The control unit is configured to control the motorized drive, and to cause the rotational movement of the C-arm structure to perform a first rotational X-ray scan (50) around a first ISO-centre (56) with a first axis of rotation for a first field of view, and to perform at least a second rotational X-ray scan (60) around a second ISO-centre (62) with a second axis of rotation for a second field of view. The first and the second centre of rotation are displaced in relation to each other such that a connection line between the first and the second ISO-centre is arranged transverse to the first and the second axis of rotation.

    Abstract translation: 本发明涉及C臂X射线成像系统。 为了向C臂系统提供扩展的三维视场，提供了提供用于获取对象的扩展三维图像的C臂X射线成像系统（10），包括C- 具有安装在X射线源的X射线源（14）和X射线检测器（16）的臂结构（12），用于C臂结构的旋转运动的电动驱动器（22），以及 控制单元（26）。 提供C形臂结构以围绕旋转轴线和围绕获取多个X射线投影的ISO中心执行旋转扫描，以便生成用于重构的三维视场的图像数据。 所述控制单元被配置为控制所述电动驱动器，并且使所述C形臂结构的旋转运动执行围绕具有第一旋转轴线的第一ISO中心（56）的第一旋转X射线扫描（50） 并且为了第二视野，以具有第二旋转轴线的方式执行围绕第二ISO中心（62）的至少第二旋转X射线扫描（60）。 第一和第二旋转中心相对于彼此移位，使得第一和第二ISO中心之间的连接线横向于第一和第二旋转轴线布置。

    Redundancy-weighted image reconstruction for short-scan X-ray tomography with an off-center X-ray detector
    7.
    发明授权
    Redundancy-weighted image reconstruction for short-scan X-ray tomography with an off-center X-ray detector 有权

    公开(公告)号：US11219425B2

    公开(公告)日：2022-01-11

    申请号：US16470587

    申请日：2017-12-19

    Applicant: KONINKLIJKE PHILIPS N.V. ,  ION BEAM APPLICATIONS S.A.

    Inventor： Dirk Schäfer

    IPC: A61B6/03 ,  A61B6/00 ,  A61B6/02 ,  G06T11/00 ,  A61B6/06 ,  G01N23/046

    Abstract: The invention relates to off-center detector X-ray tomography reconstruction of an image of an object on the basis of projection data acquired during a rotation of an X-ray source and the off-center detector around the object in two rotational passes of less than 360°, wherein a focus point of the X-ray beam travels along largely overlapping arcs (401, 402) in the two rotational passes, the off-center detector being positioned asymmetrically with respect to a central of the X-ray beam and a direction of a detector offset being reversed between the passes. According to the invention, redundancy weighting of the projection data with respect to a redundant acquisition of projection values during each of the rotational passes is made using a redundancy weighting function determined on the basis of a union of the arcs (401, 402).

    Imaging system for imaging an elongated region of interest of an object
    9.
    发明授权
    Imaging system for imaging an elongated region of interest of an object 有权

    公开(公告)号：US10561383B2

    公开(公告)日：2020-02-18

    申请号：US15535667

    申请日：2015-12-17

    Applicant: KONINKLIJKE PHILIPS N.V.

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

    IPC: A61B6/08 ,  A61B6/06 ,  A61B6/00 ,  A61B6/03

    Abstract: The invention relates to an imaging system (10) for imaging an elongated region of interest of an object, an imaging method for imaging an elongated region of interest of an object, a computer program element for controlling such system for performing such method and a computer readable medium having stored such computer program element. The imaging system (10) comprises an acquisition unit (11) and a processing unit (13). The acquisition unit (11) is a C-arm acquisition unit and configured to acquire first image data of the object to be imaged with a first imaging parameter. The acquisition unit (11) is further configured to acquire second, different image data of an object to be imaged with a second imaging parameter. The second geometric imaging parameter is defined based on object specific data for the volume data to be aligned with the elongated region of interest of the object to be imaged. The processing unit (13) is configured to combine the first and second image data into volume data.

    C-arm system with extended field of view
    10.
    发明授权
    C-arm system with extended field of view 有权
    C臂系统具有扩展视野

    公开(公告)号：US09439605B2

    公开(公告)日：2016-09-13

    申请号：US14356899

    申请日：2012-11-09

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Dirk Schäfer ,  Michael Grass

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

    CPC classification number: A61B6/022 ,  A61B6/032 ,  A61B6/4441

    Abstract: The present invention relates to a C-arm X-ray imaging system. In order to provide C-arm systems with an extended three-dimensional field of view, a C-arm X-ray imaging system (10), provided to acquire extended three-dimensional images of an object, is provided, comprising a C-arm structure (12) with an X-ray source (14) and an X-ray detector (16) mounted across from the X-ray source, a motorized drive (22) for a rotational movement of the C-arm structure, and a control unit (26). The C-arm structure is provided to perform a rotational scan around an axis of rotation and around an ISO-center acquiring a number of X-ray projections in order to generate image data for a reconstructed three-dimensional field of view. The control unit is configured to control the motorized drive, and to cause the rotational movement of the C-arm structure to perform a first rotational X-ray scan (50) around a first ISO-center (56) with a first axis of rotation for a first field of view, and to perform at least a second rotational X-ray scan (60) around a second ISO-center (62) with a second axis of rotation for a second field of view. The first and the second center of rotation are displaced in relation to each other such that a connection line between the first and the second ISO-center is arranged transverse to the first and the second axis of rotation.

    Abstract translation: 本发明涉及C臂X射线成像系统。 为了向C臂系统提供扩展的三维视场，提供了提供用于获取对象的扩展三维图像的C臂X射线成像系统（10），包括C- 具有安装在X射线源的X射线源（14）和X射线检测器（16）的臂结构（12），用于C臂结构的旋转运动的电动驱动器（22），以及 控制单元（26）。 提供C形臂结构以围绕旋转轴线和围绕获取多个X射线投影的ISO中心执行旋转扫描，以便生成用于重构的三维视场的图像数据。 所述控制单元被配置为控制所述电动驱动器，并且使所述C形臂结构的旋转运动执行围绕具有第一旋转轴线的第一ISO中心（56）的第一旋转X射线扫描（50） 并且为了第二视野，以具有第二旋转轴线的方式执行围绕第二ISO中心（62）的至少第二旋转X射线扫描（60）。 第一和第二旋转中心相对于彼此移位，使得第一和第二ISO中心之间的连接线横向于第一和第二旋转轴线布置。

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