Method for reconstructing a 3D image from 2D X-ray images
    92.
    发明公开
    Method for reconstructing a 3D image from 2D X-ray images 有权
    VERFAHREN ZUR REKONSTRUKTION EINES 3D-BILDES AUS 2D-RÖNTGENBILDERN

    公开(公告)号:EP2868277A1

    公开(公告)日:2015-05-06

    申请号:EP13306508.6

    申请日:2013-11-04

    申请人: Surgivisio

    IPC分类号: A61B6/03 A61B6/00 G06T11/00

    摘要: The present invention relates to a method for reconstructing a 3D image from 2D X-ray images acquired with an X-ray imaging system, said method comprising the steps of:
    a) receiving a set of 2D X-ray images of a region of a patient with said X-ray imaging system,
    b) computing an initial 3D image within the coordinate system of the X-ray imaging system by using at least part of said 2D X-ray images with their respective projective geometry data;
    c) projecting said initial 3D image on at least part of said 2D X-ray images and adjusting the respective projective geometry data of said images, said adjustment comprising registration of said images with the projection of the initial 3D image using an image-to-image registration technique;
    d) computing an updated 3D image using the complete set of 2D X-ray images with their respective adjusted projective geometry data.

    摘要翻译: 本发明涉及一种利用X射线成像系统获取的2D X射线图像重建3D图像的方法,所述方法包括以下步骤:a)接收一组2D图像的区域的2D X射线图像, 患者具有所述X射线成像系统,b)通过使用所述2D X射线图像的至少一部分及其各自的投影几何数据来计算X射线成像系统的坐标系内的初始3D图像; c)在所述2D X射线图像的至少一部分上投影所述初始3D图像并调整所述图像的相应投影几何数据,所述调整包括使用图像到图像的初始3D图像的投影来注册所述图像, 图像配准技术; d)使用完整的2D X射线图像及其各自调整的投影几何数据来计算更新的3D图像。

    IMAGE DISTORTION CORRECTION AND ROBUST PHANTOM DETECTION
    93.
    发明公开
    IMAGE DISTORTION CORRECTION AND ROBUST PHANTOM DETECTION 审中-公开
    BILDVERZERRUNGSKORREKTUR UND ROBUSTE PHANTOMERKENNUNG

    公开(公告)号:EP2845166A1

    公开(公告)日:2015-03-11

    申请号:EP13725579.0

    申请日:2013-04-30

    申请人: Universität Bern

    IPC分类号: G06T7/00 G06T5/00

    摘要: The invention relates to Method for detecting a phantom, comprising the steps of: arranging a phantom (20) with respect to an object, the phantom (20) comprising a plurality of first calibration fiducials (M i 1 , M i 2 , M i 3 ) in a first plane, acquiring at least one image of said object by means of an x-ray apparatus (3), such that the image contains projections of the object as well as projections (IM i 1 , IM i 2 , IM i 3 ) of at least three first calibration fiducials (M i 1 , M i 2 , M i 3 ), detecting the projections (IM i 1 , IM i 2 , IM i 3 ) of the at least three first calibration fiducials (M i 1 , M i 2 , M i 3 ) in said at least one image, and establishing a correspondence between the 2D image coordinates (I x , I y ) of said projections (IM i 1 , IM i 2 , IM i 3 ) of the at least three first calibration fiducials (M i 1 , M i 2 , M i 3 ) and the 3D coordinates (x, y, z) of said at least three first calibration fiducials (M i 1 , M i 2 , M i 3 ) in a local coordinate system of the phantom (20) for computing the projection matrix (P) or at least an element of the projection matrix (P) at least up to a scale factor (±), which projection matrix relates said 2D image coordinates (I x , I y ) to said corresponding 3D coordinates (x, y, z) in a local coordinate system of the phantom according to ±[I x , I y ,1] T =P[x,y,z,1] T .Further, the invention relates to a method for building a statistical model, particularly for image distortion correction, as well as to a ficucial device and a mobile phantom.

    摘要翻译: 本发明涉及用于检测体模的方法,包括以下步骤:相对于物体布置模体(20),所述体模(20)包括多个第一校准基准(M i 1,M i 2,M i 3)在第一平面中,通过X射线装置(3)获取所述对象的至少一个图像,使得图像包含对象的投影以及投影(IM i 1,IM i 2,IM 检测至少三个第一校准基准(M i 1,M i 2,M i 3)的至少三个第一校准基准(M i 1,M i 2,M i 3)的投影(IM i 1,IM i 2,IM i 3) i 1,M i 2,M i 3),并且建立所述投影(IM i 1,IM i 2,IM i 3)的2D图像坐标(I x,I y)之间的对应关系, 的至少三个第一校准基准(M i 1,M i 2,M i 3)和所述至少三个第一校准基准(M i 1,M i 2,M)的3D坐标(x,y,z) 我3)在一个局部坐标系 用于计算投影矩阵(P)或至少一个投影矩阵(P)的元素的幻影(20)的至少直到比例因子(±),该投影矩阵将所述2D图像坐标(I x, I y)根据±[I x,I y,1] T = P [x,y,z,1] T在体模的局部坐标系中对应的3D坐标(x,y,z) 本发明涉及用于建立统计模型的方法,特别是用于图像失真校正的方法,以及对于榫形装置和移动体模。

    Patient alignment in MRI guided radiation therapy
    94.
    发明公开
    Patient alignment in MRI guided radiation therapy 审中-公开
    MRI-geführterStrahlungstherapie中的患者

    公开(公告)号:EP2774537A1

    公开(公告)日:2014-09-10

    申请号:EP13158351.0

    申请日:2013-03-08

    申请人: Imris Inc.

    IPC分类号: A61B5/055 A61N5/10 A61B6/00

    摘要: Apparatus for radiation therapy combines a patient table, an MRI and a radiation treatment apparatus mounted in a common treatment room with the MR magnet movable through a radiation shielded door to an imaging position. An initial MR image and an initial X-ray image is used to generate an RT program for the patient to be carried out in a plurality of separate treatment steps. Before carrying out the procedure, a registration step is performed using a phantom by which X-ray images are registered relative to MR images to generate a transformation algorithm required to align the MR images of the part of the patient relative to the X-ray images. Prior to each separate treatment step a current MR image of the part of the patient is obtained and the transformation algorithm data is used from the current MR image is used in guiding the RT treatment step.

    摘要翻译: 用于放射治疗的装置将安装在公共治疗室中的患者台,MRI和放射治疗装置与可通过辐射屏蔽门移动到成像位置的MR磁体组合。 使用初始MR图像和初始X射线图像来生成用于在多个单独的处理步骤中执行的患者的RT程序。 在执行该过程之前,使用相对于MR图像登记X射线图像的体模来执行登记步骤,以生成将患者部分的MR图像相对于X射线图像对准所需的变换算法 。 在每个单独的处理步骤之前,获得患者部分的当前MR图像,并且使用来自当前MR图像的变换算法数据来指导RT治疗步骤。

    Verfahren und Vorrichtung zur Erzeugung dreidimensionaler tomographischer Bilder eines Objektes
    96.
    发明授权
    Verfahren und Vorrichtung zur Erzeugung dreidimensionaler tomographischer Bilder eines Objektes 有权
    用于产生对象的三维断层图像的方法和装置

    公开(公告)号:EP1779327B1

    公开(公告)日:2011-06-08

    申请号:EP05770222.7

    申请日:2005-08-09

    IPC分类号: G06T11/00

    摘要: The invention relates to a method for producing 3D tomographic images of an object, whereby a radiation source (1), especially an X-ray source, is moved in relation to the object in a plane of motion (6) about a rotating center. The radiation source (1) emits radiation in a radiation cone (2) whose center beam (3) impinges the object. A correspondingly entrained detector (4) is arranged in said center beam, on the side of the object facing away from the radiation source, and is impinged upon by the radiation attenuated in its intensity by the object. The movement is carried out in such a manner that the center beam (3) is tilted by an angle in relation to the plane of motion (6).

    X-RAY DETECTION DEVICE FOR C-ARM TRACKER AND METHOD
    97.
    发明公开
    X-RAY DETECTION DEVICE FOR C-ARM TRACKER AND METHOD 审中-公开
    RÖNTGENSTRAHLENDETEKTIONSVORRICHTUNGFÜREINEN C-ARM-VERFOLGER UND ENTSPRECHENDES VERFAHREN

    公开(公告)号:EP2303126A1

    公开(公告)日:2011-04-06

    申请号:EP09802315.3

    申请日:2009-07-28

    申请人: Orthosoft, Inc.

    摘要: A detection device for detecting X rays and signaling the detection to a computer-assisted surgery processor system comprises an X ray detector unit having an X ray detector adapted to be positioned within a radiation field. The X ray detector emits a detection signal upon being excited by an X ray of a given intensity. A transmitter outputs the detection signal in radio frequency. A receiver receives the detection signal in radio frequency and forwards the detection signal to a computer-assisted surgery processor system to signal the detection of the X ray. A method is provided as well.

    摘要翻译: 用于检测X射线并向计算机辅助手术处理器系统发出信号的检测装置包括具有适于定位在辐射场内的X射线检测器的X射线检测器单元。 X射线检测器在被给定强度的X射线激发时发出检测信号。 发射机以射频输出检测信号。 接收器以射频接收检测信号,并将检测信号转发到计算机辅助手术处理器系统,以通知X射线的检测。 也提供了一种方法。

    Koordinatenmessgerät und Verfahren zum Messen eines Objektes
    98.
    发明公开
    Koordinatenmessgerät und Verfahren zum Messen eines Objektes 审中-公开
    Ko。。。z。。。。。。。。。。。。

    公开(公告)号:EP2282165A3

    公开(公告)日:2011-02-16

    申请号:EP10184423.1

    申请日:2005-05-24

    摘要: Die Erfindung bezieht sich auf ein Koordinatenmessgerät sowie ein Verfahren zum Messen von Strukturen und/oder Geometrien eines Objektes wie Werkstücks mittels eines Koordinatenmessgerätes unter Verwendung einer Röntgensensorik (Computer-Tomograph) umfassend eine Röntgenstrahlenquellen, zumindest einen die Röntgenstrahlung erfassenden Sensor sowie eine Abschirmung gegenüber Röntgenstrahlung, wobei während des Messens die Röntgensensorik relativ zu dem Objekt, insbesondere das Objekt zu der Röntgensensorik gedreht wird. Um eine hinreichende Abschirmung gegen Röntgenstrahlung sicherzustellen, wird vorgeschlagenn, dass zumindest ein Funktionsbauteil des Koordinatenmessgerätes als die Abschirmung ausgebildet wird.

    摘要翻译: 物体(3)被放置在转盘(2)上,其可以在X方向上旋转和上下移动。 转盘可以放置在形成主要测量系统的X射线源(10)和X射线接收器(7)之间。 二次测量系统可以是触觉和/或光学感觉机制(8,9,11)。 X射线源可以在Y方向上水平移动,并且传感器可以在Z方向上以直角移动。

    Überprüfung der Positioniergenauigkeit eines Patiententisches in Bezug auf ein Isozentrum
    100.
    发明公开
    Überprüfung der Positioniergenauigkeit eines Patiententisches in Bezug auf ein Isozentrum 有权
    Überprüfungder Positioniergenauigkeit eines Bezug auf ein Isozentrum的患者

    公开(公告)号:EP1854506A1

    公开(公告)日:2007-11-14

    申请号:EP07106645.0

    申请日:2007-04-20

    IPC分类号: A61N5/10 A61B6/08 G01B11/27

    摘要: Ein medizintechnisches Gerät (2), insbesondere Strahlentherapiegerät, umfasst einen in einem Isozentrum (8) positionierbaren Patiententisch (18) und ein optisches Koordinatenanzeigesystem (10). Das optische Koordinatenanzeigesystem (10) weist mindestens eine zur Emission eines Prüfstrahles vorgesehene Strahlenquelle (12) auf, insbesondere einen Laserstrahler. Eine vereinfachte und objektivierte Überprüfung der Positioniergenauigkeit des Patiententisches (18) erfolgt über einen Prüfkörper (16) zur Strahlendetektierung. Hierbei umfasst der Prüfkörper (16) zumindest eine aus einer Reihe Photozellen (22) aufgebaute Photozeile (14), deren Position mit der des Patiententisches (18) korreliert ist.

    摘要翻译: 该装置具有可在等中心定位的患者台。 光学坐标显示系统具有用于发射激光的激光辐射器(12)。 验证体设置有由一系列用于放射线检测的电荷耦合器件单元组成的照相行(14a,14b,14c),以验证患者表的位置精度,其中照相行的位置与患者表相关。 照片行彼此平行地排列。 验证机构具有用于与患者台连接的连接单元。 还包括以下独立权利要求:(1)用于验证患者表的位置精度的验证机构(2)用于验证患者表的位置精度的方法。