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    13.
    发明专利
    未知

    公开(公告)号：DE50109483D1

    公开(公告)日：2006-05-24

    申请号：DE50109483

    申请日：2001-09-25

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

    Inventor： ROESCH PETER ,  WEESE JUERGEN

    IPC: A61B6/03 ,  G06T7/00 ,  A61B5/055 ,  G06K9/64 ,  G06T1/00 ,  G06T17/40

    Abstract: According to the method, local transformation parameters are determined for partial areas (1-5) of the whole image (10) that is to be translated into a second image (10'). Successive calculation of the local transformation parameters for the partial regions is determined as follows: the transformation for the first partial area (1) is given or calculated; for the remaining areas (2-5) one area is chosen; a transformation is calculated in which the local transformation parameters from an already successful transformation of an adjoining area used as a start value for its transformation; the previous steps are repeated until a sufficient division of partial areas and transformations have been calculated. The invention also relates to a computer program and a device for implementing the preceding method.

    15.
    发明专利
    未知

    公开(公告)号：DE602005014214D1

    公开(公告)日：2009-06-10

    申请号：DE602005014214

    申请日：2005-03-04

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： WEESE JUERGEN ,  ROSE GEORG

    IPC: A61B6/03 ,  A61B6/00 ,  G06T11/00

    Abstract: The invention relates to an apparatus and a method for the reconstruction of time-dependent cross-sectional images and may be applied for example in perfusion imaging in the vessel system (2) of a patient. According to the method, projections p i j are generated from a number M of different directions d i and at different times t i j . Moreover, the time-dependent intensity function I(x,t) of the reconstructed volume is approximated by a predetermined model function I*( a (x),t), wherein the unknown parameter vector a (x) is estimated for each voxel x. This estimation may be done using the update functions of known reconstruction algorithms like ART for at least N projections p i j in each iteration step.

    GENERATING VIEWS OF MEDICAL IMAGES
    18.
    发明申请
    GENERATING VIEWS OF MEDICAL IMAGES 审中-公开
    产生医学图像的观点

    公开(公告)号：WO2010070585A2

    公开(公告)日：2010-06-24

    申请号：PCT/IB2009055765

    申请日：2009-12-15

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  LEHMANN HELKO ,  WEESE JUERGEN ,  BOUGHORBEL SABRI ,  QIAN YUECHEN ,  SEVENSTER MERLIJN ,  SILFEN ERIC Z

    Inventor： LEHMANN HELKO ,  WEESE JUERGEN ,  BOUGHORBEL SABRI ,  QIAN YUECHEN ,  SEVENSTER MERLIJN ,  SILFEN ERIC Z

    IPC: G06T17/40 ,  A61B5/00

    CPC classification number: G06T19/00 ,  G06T2210/41

    Abstract: A system for generating a view of a medical image comprises an input (1) for receiving information indicative of a suspected diagnosis of a patient. An input (2) for receiving a medical image of the patient. A mapper (3) for mapping the suspected diagnosis of the patient to a set of viewing parameters for viewing the medical image. A view generator (8) for providing a view of the medical image in accordance with the set of viewing parameters. A database (4) for mapping a suspected diagnosis into a set of generic viewing parameters. A transformer (5) for transforming the set of generic viewing parameters into a set of image-specific viewing parameters based on content of the medical image.

    Abstract translation: 用于产生医学图像的视图的系统包括用于接收指示患者的疑似诊断的信息的输入（1）。 一种用于接收患者的医学图像的输入（2）。 用于将患者的疑似诊断映射到用于观看医学图像的一组观察参数的映射器（3）。 一种视图发生器（8），用于根据观看参数的集合提供医学图像的视图。 用于将可疑诊断映射到一组通用查看参数的数据库（4）。 一种变换器（5），用于基于所述医学图像的内容将所述一般观看参数集合变换成一组特定于图像的观看参数。

    A METHOD OF GENERATING A 2-D IMAGE OF A 3-D OBJECT
    19.
    发明申请
    A METHOD OF GENERATING A 2-D IMAGE OF A 3-D OBJECT 审中-公开
    一种生成三维物体的二维图像的方法

    公开(公告)号：WO2007023459A2

    公开(公告)日：2007-03-01

    申请号：PCT/IB2006052911

    申请日：2006-08-23

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  KIEFER GUNDOLF ,  WEESE JUERGEN

    Inventor： KIEFER GUNDOLF ,  WEESE JUERGEN

    IPC: G06T11/00 ,  G06T15/50

    CPC classification number: G06T15/50

    Abstract: There is described a method for generating a 2-D image of a 3-D object represented by a volume data set comprising a multiplicity of data points each having an opacity value. A plurality of notional rays are cast through the 3-D object and for each ray, a ray path is divided into a plurality of base sampling intervals defined by data points on the path. If it is determined that a difference in opacity values across a base sampling interval can become greater than a pre-determined value, successively smaller sampling regions are generated within the base sampling interval until it is determined that a difference in opacity values across each generated smaller sampling interval in the base interval is less than the pre¬ determined threshold. Values indicative of an interaction between the ray and the 3-D object in the sampling intervals along the path are accumulated using a direct volume rendering procedure to determine a pixel value in the 2-D image.

    Abstract translation: 描述了一种用于生成由包括多个数据点的体数据集表示的3-D对象的2-D图像的方法，每个数据点具有不透明度值。 多个假想射线投射通过3D目标，并且对于每条射线，射线路径被分成由路径上的数据点定义的多个基本抽样间隔。 如果确定横跨基本采样间隔的不透明度值中的差异可能变得大于预定值，则在基本采样间隔内生成连续较小的采样区域，直到确定跨每个所生成的较小的不透明度值的差异 基本区间中的采样间隔小于预定阈值。 指示沿着路径的采样间隔中的光线和3-D对象之间的相互作用的值使用直接体积渲染过程来累积以确定2-D图像中的像素值。

    SYSTEM AND METHOD FOR THE GUIDANCE OF A CATHETER IN ELECTROPHYSIOLOGIC INTERVENTIONS
    20.
    发明申请
    SYSTEM AND METHOD FOR THE GUIDANCE OF A CATHETER IN ELECTROPHYSIOLOGIC INTERVENTIONS 审中-公开
    用于指导电生理干预中导管的系统和方法

    公开(公告)号：WO2006079965A3

    公开(公告)日：2006-10-12

    申请号：PCT/IB2006050239

    申请日：2006-01-23

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  WEESE JUERGEN ,  MOLLUS SABINE ,  ECK KAI ,  BREDNO JOERG

    Inventor： WEESE JUERGEN ,  MOLLUS SABINE ,  ECK KAI ,  BREDNO JOERG

    IPC: A61B6/12 ,  A61B5/044 ,  A61B5/05

    CPC classification number: A61B5/042 ,  A61B6/12 ,  A61B6/4441 ,  A61B6/487 ,  A61B6/503 ,  A61B6/5288

    Abstract: The invention relates to a system and a method for the guidance of a catheter (20) with an electrode (21) in an electrophysiological procedure. A sequence of images (I1, ... Ik, ...) of the catheter (20) and of a resting reference catheter (30) is generated with an X-ray device (10) and stored together with the associated electrographic recordings from the electrodes (21, 31). A reference image (Ik) may then be selected from said sequence that corresponds to a desired electrographic pattern (Ek). In a next step, the positions (T, R) of the catheters (20, 30) are localized on the reference image (Ik), wherein the position (R) of the reference catheter (30) can be identified with the position of this catheter (30) on an actual image (I). Thus it is possible to determine on the actual image also a target position (T') for the catheter (20) that corresponds to the position (T) of this catheter (20) on the reference image (Ik). Said target position (T) may finally be indicated on a monitor (60) to assist the guidance of the catheter (20) to a desired location.

    Abstract translation: 本发明涉及用于在电生理学过程中引导具有电极（21）的导管（20）的系统和方法。 利用X射线装置（10）产生导管（20）和静止参考导管（30）的一系列图像（I 1，...，I k，...），并将其与相关联的电子照相记录 来自电极（21,31）。 然后可以从对应于期望的电子照相图案（Ek）的所述序列中选择参考图像（Ik）。 在下一个步骤中，导管（20,30）的位置（T，R）位于参考图像（Ik）上，其中参考导管（30）的位置（R）可以用 该导管（30）位于实际图像（I）上。 因此，有可能在实际图像上还确定与参考图像（Ik）上的该导管（20）的位置（T）对应的导管（20）的目标位置（T'）。 所述目标位置（T）最终可以在监视器（60）上指示以辅助将导管（20）引导至期望的位置。

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