Method and apparatus for visualization of 2D/3D fused image data for catheter angiography
    2.
    发明授权
    Method and apparatus for visualization of 2D/3D fused image data for catheter angiography 失效
    用于导管血管造影2D / 3D融合图像数据可视化的方法和装置

    公开(公告)号:US07519414B2

    公开(公告)日:2009-04-14

    申请号:US10860707

    申请日:2004-06-03

    IPC分类号: A61B5/00

    摘要: In an image post-processing method and apparatus for 3D visualization of 2D/3D fused image data for use in catheter angiography in an endovascular interventional procedure, upon forward movement of a micro-catheter through blood vessel in the interventional procedure, x-ray images are acquired from different projection directions and are subjected to a pattern recognition algorithm for edge-based segmentation of the image regions filled by the micro-catheter, with all remaining image regions being masked out. The segmented projection exposures are prepared by a 3D reconstruction algorithm to obtain an image data set for (pseudo-) three-dimensional representation of the micro-catheter. This image data set are intraoperatively registered and fused with an image data set acquired from an angiographic pre-examination for three-dimensional visualization of the vessel topography. The reconstructed 3D representation of the catheter is mixed into the three-dimensionally prepared representation of endovascular blood vessel sections to be treated.

    摘要翻译: 在用于血管内介入手术的导管血管造影术中的2D / 3D融合图像数据的3D可视化的图像后处理方法和装置中,在介入手术中通过血管向前移动微导管时,x射线图像 从不同的投影方向获取,并且经受用于由微导管填充的图像区域的基于边缘的分割的图案识别算法,其中所有剩余的图像区域被掩蔽。 通过3D重建算法准备分段投影曝光以获得微导管的(伪)三维表示的图像数据集。 该图像数据集在术中注册并与从血管造影检查获取的图像数据集合融合,用于血管形态的三维可视化。 导管的重建3D表示被混合到待治疗的血管内血管切片的三维制备的表示中。

    Method for marker-less navigation in preoperative 3D images using an intraoperatively acquired 3D C-arm image
    3.
    发明申请
    Method for marker-less navigation in preoperative 3D images using an intraoperatively acquired 3D C-arm image 审中-公开
    使用术中获取的3D C臂图像的术前3D图像中无标记导航的方法

    公开(公告)号:US20050004449A1

    公开(公告)日:2005-01-06

    申请号:US10849694

    申请日:2004-05-20

    摘要: In a method for marker-less navigation of a medical instrument in preoperative 3D images using an intraoperatively acquired 3D C-arm image, an intraoperative 3D Image is acquired with a C-arm system, the medical instrument brought into registration with regard to the intraoperative 3D image D, whereby a registration matrix MDN is obtained. The intraoperative 3D image is brought into registration with regard to an existing preoperative 3D image by means of image-based registration, whereby a registration matrix is obtained. Navigation of the medical instrument in the preoperative 3D image can then proceed.

    摘要翻译: 在使用手术中获取的3D C臂图像的术前3D图像中的医疗仪器的无标记导航的方法中,使用C臂系统获取术中3D图像,医疗器械关于术中 3D图像D,由此获得配准矩阵MDN。 通过基于图像的注册,将术中3D图像关于现有的术前3D图像进行登记,从而获得登记矩阵。 然后可以在术前3D图像中导航医疗仪器。

    Laser-based method for aligning apparatus for superimposing X-ray and video images
    5.
    发明授权
    Laser-based method for aligning apparatus for superimposing X-ray and video images 有权
    用于对准用于叠加X射线和视频图像的装置的基于激光的方法

    公开(公告)号:US06227704B1

    公开(公告)日:2001-05-08

    申请号:US09410226

    申请日:1999-09-30

    IPC分类号: A61B608

    摘要: Superimposed X-ray and video images can be obtained by acquiring the respective images from the optically equivalent points in space. One or more mirrors may be used to acquire the images. Alignment of one camera with respect to the X-ray source may be achieved using images of reference points in space. Once the X-ray source and the video camera are positioned at the equivalent point in space, the resultant images can be superimposed through warping.

    摘要翻译: 通过从空间中的光学等效点获取各自的图像,可以获得叠加的X射线和视频图像。 可以使用一个或多个反射镜来获取图像。 可以使用空间中的参考点的图像来实现一个照相机相对于X射线源的对准。 一旦X射线源和摄像机位于空间中的等效点,则所得到的图像可以通过翘曲叠加。

    Method and apparatus for visualization of 2D/3D fused image data for catheter angiography
    7.
    发明申请
    Method and apparatus for visualization of 2D/3D fused image data for catheter angiography 失效
    用于导管血管造影2D / 3D融合图像数据可视化的方法和装置

    公开(公告)号:US20050015006A1

    公开(公告)日:2005-01-20

    申请号:US10860707

    申请日:2004-06-03

    摘要: In an image post-processing method and apparatus for 3D visualization of 2D/3D fused image data for use in catheter angiography in an endovascular interventional procedure, upon forward movement of a micro-catheter through blood vessel in the interventional procedure, x-ray images are acquired from different projection directions and are subjected to a pattern recognition algorithm for edge-based segmentation of the image regions filled by the micro-catheter, with all remaining image regions being masked out. The segmented projection exposures are prepared by a 3D reconstruction algorithm to obtain an image data set for (pseudo-) three-dimensional representation of the micro-catheter. This image data set are intraoperatively registered and fused with an image data set acquired from an angiographic pre-examination for three-dimensional visualization of the vessel topography. The reconstructed 3D representation of the catheter is mixed into the three-dimensionally prepared representation of endovascular blood vessel sections to be treated.

    摘要翻译: 在用于血管内介入手术的导管血管造影术中的2D / 3D融合图像数据的3D可视化的图像后处理方法和装置中,在介入手术中通过血管向前移动微导管时,x射线图像 从不同的投影方向获取,并且经受用于由微导管填充的图像区域的基于边缘的分割的图案识别算法,其中所有剩余的图像区域被掩蔽。 通过3D重建算法准备分段投影曝光以获得微导管的(伪)三维表示的图像数据集。 该图像数据集在术中注册并与从血管造影检查获取的图像数据集合融合,用于血管形态的三维可视化。 导管的重建3D表示被混合到待治疗的血管内血管切片的三维制备的表示中。

    Calibration phantom for projection X-ray systems
    8.
    发明授权
    Calibration phantom for projection X-ray systems 有权
    投影X射线系统的校准幻影

    公开(公告)号:US06715918B2

    公开(公告)日:2004-04-06

    申请号:US10224373

    申请日:2002-08-21

    IPC分类号: G01D1800

    摘要: A calibration phantom includes an arrangement of markings with a first X-ray absorption capability and a second X-ray absorption capability, with the arrangement of markings precluding superimposition of an image of a first marking with an image of a second marking for a sufficient number of successive markings for each projection condition, the physical embodiment of a marking representing a value assignment, and the value assignment of a respective specific first number of adjacent markings in each case forming first code information, with each of the first code information items being unique within the first code information which is formed in the totality of markings and in both reading directions.

    摘要翻译: 校准体模包括具有第一X射线吸收能力和第二X射线吸收能力的标记布置,其中标记的布置排除了将第一标记的图像与第二标记的图像叠加足够数量 每个投影条件的连续标记,表示值分配的标记的物理实施例,以及在形成第一代码信息的每种情况下相应的特定第一数量的相邻标记的值分配,其中每个第一代码信息项是唯一的 在标记的整体和两个读取方向上形成的第一代码信息内。

    X-RAY CALIBRATION DUMMY, A METHOD FOR NON-MARKER-BASED REGISTRATION FOR USE IN NAVIGATION-GUIDED OPERATIONS EMPLOYING SAID X-RAY CALIBRATION DUMMY, AND A MEDICAL SYSTEM HAVING SUCH AN X-RAY CALIBRATION DUMMY
    9.
    发明授权
    X-RAY CALIBRATION DUMMY, A METHOD FOR NON-MARKER-BASED REGISTRATION FOR USE IN NAVIGATION-GUIDED OPERATIONS EMPLOYING SAID X-RAY CALIBRATION DUMMY, AND A MEDICAL SYSTEM HAVING SUCH AN X-RAY CALIBRATION DUMMY 失效
    X射线校准法,一种用于使用正确的X射线校准的导航操作的非基于标记的注册的方法,以及具有这种X射线校准的医疗系统DUMMY

    公开(公告)号:US06585412B2

    公开(公告)日:2003-07-01

    申请号:US09960313

    申请日:2001-09-24

    申请人: Matthias Mitschke

    发明人: Matthias Mitschke

    IPC分类号: G01D1800

    CPC分类号: A61B6/583 A61B6/547

    摘要: An X-ray calibration dummy (RP) having markings (4) that may be acquired by a position-acquisition system (30). The invention also concerns a method for nonmarker-based registration for use in navigation-guided operations employing the X-ray calibration dummy (RP). A medical system for carrying out the method has a C-shaped X-ray machine (10), a position-acquisition system, 30, and the X-ray calibration dummy (RP).

    摘要翻译: 具有可由位置采集系统(30)获取的标记(4)的X射线校准虚拟(RP)。 本发明还涉及用于使用X射线校准虚拟(RP)的导航指导操作中的基于非标记的注册的方法。 用于执行该方法的医疗系统具有C形X射线机(10),位置采集系统(30)和X射线校准虚拟(RP)。

    X-ray apparatus for producing a 3D image from a set of 2D projections
    10.
    发明授权
    X-ray apparatus for producing a 3D image from a set of 2D projections 有权
    用于从一组2D投影产生3D图像的X射线装置

    公开(公告)号:US06379041B1

    公开(公告)日:2002-04-30

    申请号:US09532073

    申请日:2000-03-21

    IPC分类号: A61B603

    CPC分类号: A61B6/583 A61B6/547

    摘要: An X-ray apparatus has an X-ray examination system with an X-ray source and an X-ray detector which can be displaced relative to a subject for the pickup of 2D projections, an arrangement for determining extrinsic imaging parameters and an arrangement for determining intrinsic imaging parameters, for determining the projection geometry in the examination system for each 2D projection, and having a control and computing stage for reconstructing 3D images from the 2D projections using the extrinsic and intrinsic imaging parameters. The arrangement for determining the intrinsic imaging parameters includes X-ray-positive marks which are allocated to the X-ray source and which are in the path of an X-ray beam emanating from the X-ray source, these marks following displacement of the X-ray system.

    摘要翻译: X射线装置具有X射线检查系统,X射线源和X射线检测器可相对于被摄体移位以用于2D投影的拾取,用于确定非本征成像参数的装置和用于 确定固有成像参数,用于确定用于每个2D投影的检查系统中的投影几何,以及具有用于使用外在和内在成像参数从2D投影重建3D图像的控制和计算阶段。 用于确定固有成像参数的布置包括分配给X射线源并且位于从X射线源发出的X射线束的路径中的X射线正的标记, X光系统。