公开(公告)号：US10426417B2

公开(公告)日：2019-10-01

申请号：US15301513

申请日：2015-06-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael Grass ,  Thomas Koehler ,  Roland Proksa

IPC: A61B6/00 ,  A61B6/03

Abstract: An imaging system (200) includes a radiation source (208) that emits radiation that traverses an examination region. The imaging system further includes a hybrid data acquisition system (212) that receives radiation that traverses the examination region. The hybrid data acquisition system includes a phase-contrast sub-portion (304) spanning a sub-portion of a full field of view. The hybrid data acquisition system further includes at least one of an integrating portion (302, 702, 804, 806, 902) or a spectral portion (402, 704, 706, 802, 1002) spanning the full field of view. The hybrid data acquisition system generates a phase-contrast signal and at least one of an integration signal or a spectral signal. The imaging system further includes a reconstructor (216) that reconstructs the phase-contrast signal and at least one of the integration single or the spectral signal to generate volumetric image data indicative of the examination region.

公开(公告)号：US10368819B2

公开(公告)日：2019-08-06

申请号：US15326509

申请日：2015-07-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael Grass ,  Roland Proksa

IPC: G06K9/00 ,  A61B6/00 ,  A61B6/03 ,  G06T7/00 ,  G16H50/50 ,  G06T7/68

Abstract: The present invention relates to improved assessment of a stenosis in a blood vessel in a body by comparing hemodynamic properties of the stenosed blood vessel with a substantially symmetric different blood vessel in the same body.

公开(公告)号：US10219772B2

公开(公告)日：2019-03-05

申请号：US15547531

申请日：2016-12-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael Grass ,  Thomas Koehler

IPC: A61B5/00 ,  A61B6/00 ,  A61B6/02 ,  A61B6/03 ,  G01T1/29 ,  G06T11/00

Abstract: The invention relates to tomographic imaging device (1). The device (1) comprises a radiation detector (3) for measuring radiation traveling through an object to be imaged, the radiation detector (3) being configured to measure radiation only at a plurality of selected sampling positions on a curved track around an axis (z). A planning unit (12) is configured to determine the selected sampling positions on the basis of an estimated contour (44; 53) of the object (21) in a plane (x-y) substantially perpendicular to the axis (z). Further, the invention relates to a method for operating the device (1). The invention is particularly applicable in computed tomography imaging.

公开(公告)号：US10052078B2

公开(公告)日：2018-08-21

申请号：US15112439

申请日：2014-12-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bernhard Johannes Brendel ,  Michael Grass ,  Holger Schmitt ,  Sven Kabus

IPC: G06K9/00 ,  A61B6/00 ,  A61B6/03 ,  G06T11/00 ,  G06T7/215

CPC classification number: A61B6/5264 ,  A61B6/032 ,  A61B6/4435 ,  A61B6/463 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5205 ,  A61B6/5241 ,  G06T7/215 ,  G06T11/005 ,  G06T11/008 ,  G06T2207/10072 ,  G06T2207/10081 ,  G06T2207/10088 ,  G06T2207/10104 ,  G06T2207/10108 ,  G06T2211/412

Abstract: A method includes obtaining projection data from a scan of a moving structure of interest. The method further includes reconstructing the projection data, generating first image data. The method further includes identifying a sub-set of the projection. The method further includes reconstructing the sub-set projection data, generating second image data. The method further includes identifying a region in which the moving structure of interest is located based on the first image data. The method further includes identifying a location of the moving structure of interest in the identified region based on the second image data.

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。

公开(公告)号：US20140307852A1

公开(公告)日：2014-10-16

申请号：US14356854

申请日：2012-10-31

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael Grass ,  Dirk Schäfer ,  Bernhard Johannes Brendel ,  Christian Lorenz

IPC: H05G1/02 ,  G01N23/04

CPC classification number: H05G1/02 ,  A61B6/022 ,  A61B6/4028 ,  A61B6/4441 ,  A61B6/4464 ,  A61B6/482 ,  A61B6/503 ,  A61B6/504 ,  A61B6/5288 ,  A61B6/541 ,  G01N23/04

Abstract: The present invention relates to C-arm X-ray imaging. In order to provide C-arm CT image acquisition with an enlarged gating window, a C-arm structure (12) for X-ray imaging is provided, comprising a C-arm (32), a movable C-arm support (34), an X-ray source (36), and an X-ray detector (38). The C-arm comprises a first end (40) and a second end (42), wherein the X-ray source is mounted to the first end and the detector is mounted to the second end. The C-arm is mounted to the C-arm support such that the X-ray source and the detector are movable around an object (44) of interest on respective trajectories (46). The X-ray source comprises at least a first focal spot (48) and a second focal spot (50) spaced apart from each other with a focal spot distance (52) in an off-set direction (54), which offset direction is aligned with the trajectory.

Abstract translation: 本发明涉及C臂X射线成像。 为了通过放大的门控窗口提供C臂CT图像采集，提供了用于X射线成像的C形臂结构（12），其包括C形臂（32），可移动的C形臂支撑件（34） ，X射线源（36）和X射线检测器（38）。 C形臂包括第一端（40）和第二端（42），其中X射线源安装到第一端并且检测器安装到第二端。 所述C形臂安装到所述C形臂支撑件上，使得所述X射线源和所述检测器可围绕相应轨迹（46）上的感兴趣对象（44）移动。 所述X射线源包括至少第一焦斑（48）和第二焦点（50），所述第一焦点（48）和第二焦斑（50）在偏移方向（54）上具有焦斑距离（52），所述偏移方向为 与轨迹对齐。