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    RECONSTRUCTION OF AN IMAGE OF A MOVING OBJECT FROM VOLUMETRIC DATA
    1.
    发明申请
    RECONSTRUCTION OF AN IMAGE OF A MOVING OBJECT FROM VOLUMETRIC DATA 有权
    从体积数据重建运动对象的图像

    公开(公告)号：US20090232379A1

    公开(公告)日：2009-09-17

    申请号：US12471511

    申请日：2009-05-26

    申请人： Thomas Kohler ,  Michael Grass ,  Michael Harald Kuhn ,  Roland Proksa

    发明人： Thomas Kohler ,  Michael Grass ,  Michael Harald Kuhn ,  Roland Proksa

    IPC分类号： G06K9/00

    CPC分类号： G06T7/20 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2211/404 ,  G06T2211/412

    摘要： In the CT imaging of non-homogeneously moving objects such as the heart or the coronary vessel tree, there is a problem that different parts of the objects are at rest at different points in time. Thus, a gated reconstruction with a globally selected time point does not yield a sharp image of such objects. According to the present invention, a motion of the object is estimated, describing the motion of selected regions of these objects. Then, on the basis of the estimated motion, time points are determined, where these areas have minimal motion. Then, an image is reconstructed, wherein the data from which the respective regions are reconstructed, correspond to the respective time points, where the regions have minimal motion. Due to this, an improved image quality may be provided.

    摘要翻译： 在诸如心脏或冠状血管树之类的非均匀运动物体的CT成像中，存在不同部分的物体在不同时间点处于静止状态的问题。 因此，具有全局选择的时间点的门控重构不会产生这样的对象的清晰图像。 根据本发明，估计对象的运动，描述这些对象的选定区域的运动。 然后，在估计运动的基础上，确定这些区域具有最小运动的时间点。 然后，重建图像，其中各个区域被重构的数据对应于各个时间点，其中区域具有最小的运动。 由此，可以提供改善的图像质量。

    Reconstruction of an image of a moving object from volumetric data
    2.
    发明授权
    Reconstruction of an image of a moving object from volumetric data 有权
    从体积数据重建移动物体的图像

    公开(公告)号：US07545903B2

    公开(公告)日：2009-06-09

    申请号：US10564572

    申请日：2004-07-07

    申请人： Thomas Köhler ,  Michael Grass ,  Michael Harald Kuhn ,  Roland Proksa

    发明人： Thomas Köhler ,  Michael Grass ,  Michael Harald Kuhn ,  Roland Proksa

    IPC分类号： A61B6/03

    CPC分类号： G06T7/20 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2211/404 ,  G06T2211/412

    摘要： In the CT imaging of non-homogeneously moving objects such as the heart or the coronary vessel tree, there is a problem that different parts of the objects are at rest at different points in time. Thus, a gated reconstruction with a globally selected time point does not yield a sharp image of such objects. According to the present invention, a motion of the objects is estimated, describing the motion of selected regions of these objects. Then, on the basis of the estimated motion, time points are determined, where these areas have minimal motion. Then, an image is reconstructed, wherein the data from which the respective regions are reconstructed, correspond to the respective time points, where the regions have minimal motion. Due to this, an improved image qualify maybe provided.

    摘要翻译： 在诸如心脏或冠状血管树之类的非均匀运动物体的CT成像中，存在不同部分的物体在不同时间点处于静止状态的问题。 因此，具有全局选择的时间点的门控重构不会产生这样的对象的清晰图像。 根据本发明，估计对象的运动，描述这些对象的选定区域的运动。 然后，在估计运动的基础上，确定这些区域具有最小运动的时间点。 然后，重建图像，其中各个区域被重构的数据对应于各个时间点，其中区域具有最小的运动。 因此，可以提供改进的图像资格。

    Reconstruction of an image of a moving object from volumetric data
    3.
    发明授权
    Reconstruction of an image of a moving object from volumetric data 有权
    从体积数据重建移动物体的图像

    公开(公告)号：US07924972B2

    公开(公告)日：2011-04-12

    申请号：US12471511

    申请日：2009-05-26

    申请人： Thomas Koehler ,  Michael Grass ,  Michael Harald Kuhn ,  Roland Proksa

    发明人： Thomas Koehler ,  Michael Grass ,  Michael Harald Kuhn ,  Roland Proksa

    IPC分类号： A61B6/03

    CPC分类号： G06T7/20 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2211/404 ,  G06T2211/412

    摘要： In the CT imaging of non-homogeneously moving objects such as the heart or the coronary vessel tree, there is a problem that different parts of the objects are at rest at different points in time. Thus, a gated reconstruction with a globally selected time point does not yield a sharp image of such objects. According to the present invention, a motion of the object is estimated, describing the motion of selected regions of these objects. Then, on the basis of the estimated motion, time points are determined, where these areas have minimal motion. Then, an image is reconstructed, wherein the data from which the respective regions are reconstructed, correspond to the respective time points, where the regions have minimal motion. Due to this, an improved image quality may be provided.

    摘要翻译： 在诸如心脏或冠状血管树之类的非均匀运动物体的CT成像中，存在不同部分的物体在不同时间点处于静止状态的问题。 因此，具有全局选择的时间点的门控重构不会产生这样的对象的清晰图像。 根据本发明，估计对象的运动，描述这些对象的选定区域的运动。 然后，在估计运动的基础上，确定这些区域具有最小运动的时间点。 然后，重建图像，其中各个区域被重构的数据对应于各个时间点，其中区域具有最小的运动。 由此，可以提供改善的图像质量。

    IMAGE GUIDED THERAPY
    6.
    发明申请
    IMAGE GUIDED THERAPY 有权
    图像指导治疗

    公开(公告)号：US20100179414A1

    公开(公告)日：2010-07-15

    申请号：US12602795

    申请日：2008-06-04

    申请人： Michael Harald Kuhn ,  Julius Cohen

    发明人： Michael Harald Kuhn ,  Julius Cohen

    IPC分类号： A61B5/055 ,  G06K9/00

    CPC分类号： A61N7/02 ,  A61B5/015 ,  A61B5/055 ,  A61B18/14 ,  A61B18/20 ,  A61B34/20 ,  A61B2017/00084 ,  A61B2090/376 ,  A61B2090/3904 ,  A61B2090/3954

    摘要： A therapeutic system comprises a therapy module to direct a therapeutic action, e.g. focused ultrasound or RF energy to a target. An imaging module such as an magnetic resonance examination system generates image information of a therapy region that includes the target. By way of a motion analysis module a motion vector field is derived from the image information of the therapy region. A control module controls the therapy module on the basis of the motion vector field. Notably, on the basis of the motion vector field an accurate temperature distribution is derived from magnetic resonance signals and the motion vector field. Also magnetic resonance elastography data may be employed to improve the accuracy of the temperature distribution.

    摘要翻译： 一种治疗系统包括用于引导治疗作用的治疗模块，例如， 聚焦超声或射频能量到目标。 诸如磁共振检查系统的成像模块生成包括目标的治疗区域的图像信息。 通过运动分析模块，从治疗区域的图像信息导出运动矢量场。 控制模块基于运动矢量场控制治疗模块。 值得注意的是，基于运动矢量场，从磁共振信号和运动矢量场导出准确的温度分布。 也可以使用磁共振弹性成像数据来提高温度分布的精度。

    Diagnostic imaging system with ultrasound probe
    7.
    发明授权
    Diagnostic imaging system with ultrasound probe 有权
    超声探头诊断成像系统

    公开(公告)号：US06505063B2

    公开(公告)日：2003-01-07

    申请号：US09736014

    申请日：2000-12-13

    申请人： Johan Samuel Van Den Brink ,  Frederik Visser ,  Michael Harald Kuhn

    发明人： Johan Samuel Van Den Brink ,  Frederik Visser ,  Michael Harald Kuhn

    IPC分类号： A61B500

    CPC分类号： G01R33/4814 ,  A61B8/00 ,  A61B8/5238 ,  Y10S128/922

    摘要： A diagnostic imaging system, notably a magnetic resonance imaging system comprises a receiver antenna for picking-up magnetic resonance signals and an ultrasound probe for receiving ultrasound echoes. A reconstruction unit is arranged to reconstruct a diagnostic image from the magnetic resonance signals and the ultrasound echoes in particular, the magnetic resonance image and ultrasound images are registered in a common reference frame and geometric distortions in the ultrasound image are corrected on the basis of the magnetic resonance image. Different tissues types are distinguished in the magnetic resonance image and corrections are made for differences between ultrasound sound velocities in these tissue types. Further, information contained in the magnetic resonance signals can be displayed in combination in the ultrasound echoes.

    摘要翻译： 诊断成像系统，特别是磁共振成像系统包括用于拾取磁共振信号的接收器天线和用于接收超声回波的超声波探头。 重建单元被布置成特别地从磁共振信号和超声回波重构诊断图像，磁共振图像和超声图像被登记在公共参考帧中，并且基于超声波图像校正超声图像中的几何失真 磁共振图像。 在磁共振图像中区分不同的组织类型，并且对这些组织类型中的超声声速之间的差异进行校正。 此外，包含在磁共振信号中的信息可以组合显示在超声回波中。

    REDUCTION OF HEART MOTION ARTIFACTS IN THORACIC CT IMAGING
    9.
    发明申请
    REDUCTION OF HEART MOTION ARTIFACTS IN THORACIC CT IMAGING 有权
    减少心脏CT成像中心脏运动的影响

    公开(公告)号：US20100014736A1

    公开(公告)日：2010-01-21

    申请号：US12438952

    申请日：2007-08-27

    申请人： Hans Barschdorf ,  Jens Von Berg ,  Michael Harald Kuhn ,  Cristian Lorenz ,  Thomas Blaffert

    发明人： Hans Barschdorf ,  Jens Von Berg ,  Michael Harald Kuhn ,  Cristian Lorenz ,  Thomas Blaffert

    IPC分类号： G06K9/32 ,  G06K9/00

    CPC分类号： G06T7/251 ,  G06T7/149 ,  G06T7/33 ,  G06T2200/04 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2207/30061 ,  G06T2211/412

    摘要： The invention relates to a system (100) for adapting a plurality of model meshes to a plurality of image data, the system comprising a registration unit (110) for registering the plurality of model meshes with the plurality of image data on the basis of a computation of a registration transformation for transforming the plurality of model meshes, and an adaptation unit (120) for adapting the plurality of registered model meshes to the plurality of image data on the basis of a computation of locations of mesh vertices of the plurality of model meshes. The system (100) may further comprise a computing unit (130) for computing sparse vector fields comprising vectors of displacements of vertices of the adapted model meshes, an approximation unit (140) for computing dense vector fields on the basis of the sparse vector fields, a merge unit (150) for merging image data sets by means of the computed dense vector fields, and a reconstruction unit (155) for reconstructing a motion-compensated image data from the computed dense vector fields. The described system (100) is capable of reducing motion artifacts in tomographic images computed from data acquired at a plurality of different cardiac cycle phases.

    摘要翻译： 本发明涉及一种用于将多个模型网格适配到多个图像数据的系统（100），该系统包括：注册单元（110），用于基于多个图像数据登记多个模型网格与多个图像数据 用于变换多个模型网格的注册变换的计算;以及适应单元，用于根据多个模型的网格顶点的位置的计算来将多个注册模型网格适配到多个图像数据 网格 系统（100）还可以包括计算单元（130），用于计算包括适应模型网格的顶点位移矢量的稀疏矢量场，用于基于稀疏矢量场计算密集矢量场的近似单元（140） ，用于通过所计算的密集矢量场合并图像数据组的合并单元（150），以及用于从所计算的密集矢量场重构运动补偿图像数据的重建单元（155）。 所描述的系统（100）能够减少从在多个不同的心动周期阶段获取的数据计算的断层图像中的运动伪影。