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    1.
    发明专利
    未知

    公开(公告)号：DE602006005137D1

    公开(公告)日：2009-03-26

    申请号：DE602006005137

    申请日：2006-01-31

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： BONTUS CLAAS ,  GRASS MICHAEL ,  KOEHLER THOMAS

    IPC: G06T11/00

    Abstract: The invention relates to a computed tomography method in which a periodically moving object is irradiated by a conical beam bundle. An nPi-relative movement is generated between a radiation source, which generates the conical beam bundle, and the object. During the nPi-relative movement, measured values are acquired, which depend on the intensity in the beam bundle on the other side of the object and from these measured values filter values are determined, which are divided into different groups. The filter values of at least one group are weighted in dependence on the movement of the object, wherein, when filter values of several groups are weighted, filter values of different groups are weighted differently in dependence on the movement of the object. Finally, a CT image of the object is reconstructed from the filter values.

    RECONSTRUCTING AN OBJECT OF INTEREST
    2.
    发明申请
    RECONSTRUCTING AN OBJECT OF INTEREST 审中-公开
    重建感兴趣的对象

    公开(公告)号：WO2011073864A3

    公开(公告)日：2011-08-11

    申请号：PCT/IB2010055714

    申请日：2010-12-10

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  ERHARD KLAUS ,  GRASS MICHAEL ,  BUELOW THOMAS ,  HANSIS EBERHARD SEBASTIAN

    Inventor： ERHARD KLAUS ,  GRASS MICHAEL ,  BUELOW THOMAS ,  HANSIS EBERHARD SEBASTIAN

    IPC: G06T11/00

    CPC classification number: G06T11/006 ,  G06T2211/436

    Abstract: A system for generating a reconstruction of an object of interest comprises a shape model generator (1) for generating a shape model representing a shape of the object in dependence on a plurality of projections of the object, and a reconstructor (2) for reconstructing the object, based on the projections, in dependence on the shape model to obtain the reconstruction of the object. The reconstructor (2) comprises a soft-tissue reconstructor (4) for generating a reconstruction favoring soft tissue, based on the plurality of projections, and a sparse reconstructor (5) for generating a reconstruction of sparse objects, based on the plurality of projections. The reconstructor (2) comprises a clipping subsystem (3) for clipping an outside of the object from the reconstruction, based on the shape model, or the reconstructor (2) is arranged for reconstructing only an inside and/or boundary of the object as defined by the shape model.

    Abstract translation: 一种用于生成感兴趣对象的重建的系统包括：形状模型生成器（1），用于根据对象的多个投影生成表示对象的形状的形状模型;以及重建器（2），用于重建 对象，基于投影，依赖于形状模型来获得对象的重构。 重建器（2）包括用于基于多个投影产生有利于软组织的重构的软组织重建器（4），以及用于基于多个投影产生稀疏对象的重建的稀疏重构器（5） 。 所述重建器（2）包括用于基于所述形状模型从所述重建中剪切所述对象的外部的剪裁子系统（3），或者所述重建器（2）被设置为仅将所述对象的内部和/或边界重建为 由形状模型定义。

    METHOD AND APPARATUS FOR CARDIAC COMPUTED TOMOGRAPHY
    4.
    发明申请
    METHOD AND APPARATUS FOR CARDIAC COMPUTED TOMOGRAPHY 审中-公开
    心脏计算机图像的方法和装置

    公开(公告)号：WO2006067671A3

    公开(公告)日：2006-09-14

    申请号：PCT/IB2005054198

    申请日：2005-12-13

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  FORTHMANN PETER ,  KOEHLER THOMAS ,  MANZKE ROBERT ,  GRASS MICHAEL ,  ZIEGLER ANDY

    Inventor： FORTHMANN PETER ,  KOEHLER THOMAS ,  MANZKE ROBERT ,  GRASS MICHAEL ,  ZIEGLER ANDY

    IPC: A61B6/00 ,  A61B6/03

    CPC classification number: A61B6/541 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/503

    Abstract: A method of recording images of the heart in computed tomography is provided in which, in order to prevent movement artifacts, the images are reconstructed on the basis of similar movement states of the heart and different radiation intensities are used for different movement states. During recording operation low-resolution images are continually reconstructed from the recorded data. The movement state of the heart is determined from the low- resolution images, preferably by comparing successive images. During the desired heart phase with little heart movement the power of the X-ray tube is increased. A high-resolution reconstruÌtion is carried out retrospectively from data recorded with a high radiation intensity in similar movement states with little heart movement. Also disclosed are a CT apparatus and a computer program for carrying out the method.

    Abstract translation: 提供了一种在计算机断层摄影中记录心脏图像的方法，其中为了防止运动伪像，基于心脏的相似运动状态重建图像，并且不同的辐射强度用于不同的运动状态。 在记录操作期间，从记录的数据中连续重建低分辨率图像。 优选地，通过比较连续图像，从低分辨率图像确定心脏的移动状态。 在期望的心脏移动期间，X射线管的功率增加。 从具有较小的心脏运动的相似运动状态下以高辐射强度记录的数据追溯地进行高分辨率重建。 还公开了一种用于执行该方法的CT装置和计算机程序。

    COMPUTER TOMOGRAPHY METHOD USING A CONE-SHAPED BUNDLE OF RAYS
    5.
    发明申请
    COMPUTER TOMOGRAPHY METHOD USING A CONE-SHAPED BUNDLE OF RAYS 审中-公开
    计算机图形方法使用一个锥形的组合

    公开(公告)号：WO2005023114A8

    公开(公告)日：2006-06-29

    申请号：PCT/IB2004051523

    申请日：2004-08-23

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  BONTUS CLAAS ,  KOEHLER THOMAS ,  GRASS MICHAEL

    Inventor： BONTUS CLAAS ,  KOEHLER THOMAS ,  GRASS MICHAEL

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

    CPC classification number: A61B6/5217 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/5264 ,  A61B6/527 ,  A61B6/541 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/412

    Abstract: The invention relates to a computer tomography method in which an examination area is passed through by a cone-shaped bundle of rays. The bundle of rays comes from a radiation source location which moves around the examination area on an overall trajectory. The overall trajectory consists of a first, closed partial trajectory, at least one second, closed partial trajectory and at least one third partial trajectory which connects the first and the at least one second partial trajectories to one another. Measured values which depend on the intensity in the bundle of rays on the other side of the examination area are acquired by means of a detector unit while the radiation source location is moving on the overall trajectory, and a CT image of the examination area is reconstructed from these measured values.

    Abstract translation: 本发明涉及一种计算机断层摄影方法，其中检查区域通过锥形束的光束通过。 一束光线来自在总体轨迹上围绕检查区域移动的辐射源位置。 整个轨迹由第一，闭合的部分轨迹，至少一个第二，闭合的部分轨迹和至少一个将第一和第二部分轨迹相互连接的第三部分轨迹组成。 在辐射源位置在整个轨迹上移动的同时，通过检测器单元获取取决于检查区另一侧的光线束强度的测量值，并且重建检查区域的CT图像 从这些测量值。

    COMPUTED TOMOGRAPHY DEVICE AND METHOD WITH THREE-DIMENSIONAL BACKPROJECTION
    6.
    发明申请
    COMPUTED TOMOGRAPHY DEVICE AND METHOD WITH THREE-DIMENSIONAL BACKPROJECTION 审中-公开
    计算机图像设备和具有三维反射的方法

    公开(公告)号：WO2004044848A8

    公开(公告)日：2005-04-21

    申请号：PCT/IB0304749

    申请日：2003-10-24

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  SCHLOMKA JENS-PETER ,  GRASS MICHAEL

    Inventor： SCHLOMKA JENS-PETER ,  GRASS MICHAEL

    IPC: A61B6/03 ,  G06T11/00

    CPC classification number: A61B6/032 ,  A61B6/4085 ,  A61B6/4291 ,  G06T11/006 ,  G06T2211/421

    Abstract: The invention relates to a computed tomography method in which an examination zone is irradiated along a circular trajectory by a fan-shaped radiation beam. Radiation coherently scattered in the examination zone is measured by a detector unit, the variation in space of the scatter intensity in the examination zone being reconstructed from said measuring values. Reconstruction is performed by back projection in a volume which is defined by two linearly independent vectors of the rotational plane and a wave vector transfer.

    Abstract translation: 本发明涉及一种计算机断层摄影方法，其中通过扇形辐射束沿着圆形轨迹照射检查区。 通过检测器单元测量在检查区域中相干散射的辐射，从所述测量值重建检查区域中的散射强度的空间变化。 通过由旋转平面的两个线性独立向量和波矢量传递限定的体积中的反投影执行重建。

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