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    METHOD OF IMAGE RECONSTRUCTION FOR A FILTERED BACK PROJECTION IN LIMITED ANGLE TOMOGRAPHY
    3.
    发明公开
    METHOD OF IMAGE RECONSTRUCTION FOR A FILTERED BACK PROJECTION IN LIMITED ANGLE TOMOGRAPHY 审中-公开
    METHOD FOR IMAGE RECONSTRUCTION FOR A滤波的回填投影TOMOGRAPHY在有限的角

    公开(公告)号：EP2745272A1

    公开(公告)日：2014-06-25

    申请号：EP12780284.1

    申请日：2012-08-27

    申请人： Koninklijke Philips N.V. ,  Philips Deutschland GmbH

    发明人： NIELSEN, Tim ,  HITZIGER, Sebastian ,  GRASS, Michael

    IPC分类号： G06T11/00

    CPC分类号： G06T11/006 ,  A61B6/035 ,  G06T2210/41 ,  G06T2211/421 ,  G06T2211/436

    摘要： The present invention is directed to a limited angle tomography in combination with a filtered back projection using a special filter operator X. The filter operator X used within the present invention makes it possible to perform region of interest reconstructions although delivering high quality reconstruction images as generated by high effort S ART methods. The used filter operator is purely and solely mathematically determined and defined by the spatial geometry which is used for the limited angle tomography. Without having the need to perform several iterations, the present invention directly calculates a solution, i.e. reconstructed image, equivalent to known iteratively construction methods. Although, incomplete projection data p may only be used, the present invention provides for a high image quality.

    摘要翻译： 本发明涉及一种有限角度断层摄影结合使用特殊的滤波器算X.在本发明中使用的过滤器算子X使得能够执行重建感兴趣区域的滤波反投影虽然提供高质量的重建图像作为生成 高努力SART方法。 所使用的过滤器操作者是纯粹且仅数学确定性开采和由空间几何所有其用于有限角度断层摄影限定。 而无需执行多次迭代的需要，本发明直接计算的溶液中，即 重建的图像，相当于迭代已知结构的方法。 虽然，仅可用于不完整的投影数据p，本发明提供了一种高图像质量。

    FLEXIBLE X-RAY, DETECTOR WITH OPTICAL SHAPE SENSING
    8.
    发明授权
    FLEXIBLE X-RAY, DETECTOR WITH OPTICAL SHAPE SENSING 有权
    用光学形式的测量灵活的X射线探测器

    公开(公告)号：EP2751592B1

    公开(公告)日：2015-08-05

    申请号：EP12812343.7

    申请日：2012-10-29

    申请人： Koninklijke Philips N.V. ,  Philips Deutschland GmbH

    发明人： GRASS, Michael ,  MANZKE, Robert ,  CHAN, Raymond

    IPC分类号： G01T1/161

    CPC分类号： A61N5/1067 ,  A61B6/12 ,  A61N5/1071 ,  G01T1/023 ,  G01T1/161

    摘要： The present invention relates to a sensor device for detecting dose of radiation received at the sensor device, the sensor device comprising a flexible body having a cross-section being comparatively small relative to the length of the device, a cladding at the flexible body, the cladding converting incoming radiation into visible light, and an optical shape sensing device disposed within the flexible body and configured to determine a shape of the flexible instrument relative to a reference, the shape sensing device configured to collect information based on its configuration to map an intraluminal structure during a procedure. The present invention further relates to a radiation therapy system including such a sensor device and a method of operating a radiation therapy system including such a sensor device.

    C-ARM SYSTEM WITH EXTENDED FIELD OF VIEW
    9.
    发明公开
    C-ARM SYSTEM WITH EXTENDED FIELD OF VIEW 有权
    C-BOGE​​NSYSTEM MIT ERWEITERTEM SICHTFELD

    公开(公告)号：EP2775925A1

    公开(公告)日：2014-09-17

    申请号：EP12806150.4

    申请日：2012-11-09

    申请人： Koninklijke Philips N.V. ,  Philips Deutschland GmbH

    发明人： SCHÄFER, Dirk ,  GRASS, Michael

    IPC分类号： A61B6/03

    CPC分类号： A61B6/022 ,  A61B6/032 ,  A61B6/4441

    摘要： 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.

    摘要翻译： 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野，提供了用于获取对象的扩展的三维图像的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执行旋转扫描并且围绕获取多个X射线投影的ISO中心，以便生成用于重建的三维视场的图像数据。 控制单元被配置为控制电动驱动器，并且使得C形臂结构的旋转运动使得围绕具有第一旋转轴线的第一ISO中心（56）执行第一旋转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，围绕第二ISO中心（62）执行至少第二旋转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。