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    COMPUTER TOMOGRAPHY APPARATUS, METHOD OF EXAMINING AN OBJECT OF INTEREST WITH A COMPUTER TOMOGRAPHY APPARATUS, COMPUTER-READABLE MEDIUM AND PROGRAM ELEMENT
    22.
    发明申请
    COMPUTER TOMOGRAPHY APPARATUS, METHOD OF EXAMINING AN OBJECT OF INTEREST WITH A COMPUTER TOMOGRAPHY APPARATUS, COMPUTER-READABLE MEDIUM AND PROGRAM ELEMENT 审中-公开
    计算机断层摄影设备，用于检查计算机断层摄影设备，计算机可读介质和程序元件的感兴趣对象的方法

    公开(公告)号：WO2006085253A2

    公开(公告)日：2006-08-17

    申请号：PCT/IB2006050374

    申请日：2006-02-06

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  MANZKE ROBERT ,  GRASS MICHAEL

    Inventor： MANZKE ROBERT ,  GRASS MICHAEL

    IPC: A61B6/03

    CPC classification number: A61B6/5217 ,  A61B6/027 ,  A61B6/032 ,  A61B6/5288

    Abstract: A computer tomography apparatus (100) for examination of a moving object of interest (130), comprising an electromagnetic radiation source (104) adapted to emit electromagnetic radiation to the object of interest (130) and adapted to rotate around the object of interest (130), detecting elements (123) adapted to detect electromagnetic radiation emitted by the electromagnetic radiation source (104) and passed through the object of interest (130), adapted to rotate around the object of interest (130) and adapted to detect first data related to a first motion interval of the object of interest (130) and to detect second data related to a second motion interval of the object of interest (130), and a determination unit (118) adapted to determine images of the structure of the object of interest (130) in the first motion interval and in the second motion interval and to determine motion information concerning the object of interest (130) between the first motion interval and the second motion interval based on an analysis of the determined images.

    Abstract translation: 1。一种用于检查感兴趣移动物体（130）的计算机断层摄影装置（100），包括适于向感兴趣物体（130）发射电磁辐射并且适于围绕感兴趣物体旋转的电磁辐射源（104） 130）;适于检测由所述电磁辐射源（104）发射并穿过所述感兴趣对象（130）的电磁辐射的检测元件（123），适于围绕所述感兴趣对象（130）旋转并适于检测第一数据 （130）的第一运动区间相关联并且检测与所述感兴趣对象（130）的第二运动区间有关的第二数据;以及确定单元（118），适于确定所述感兴趣对象（130）的所述结构的图像 在第一运动区间和第二运动区间中感兴趣对象（130），并且在第一运动区间和第二运动区间之间确定关于感兴趣对象（130）的运动信息 n间隔基于所确定的图像的分析。

    RECONSTRUCTION OF AN IMAGE OF A MOVING OBJECT FROM VOLUMETRIC DATA
    23.
    发明申请
    RECONSTRUCTION OF AN IMAGE OF A MOVING OBJECT FROM VOLUMETRIC DATA 审中-公开
    从体积数据重建运动对象的图像

    公开(公告)号：WO2005008597A3

    公开(公告)日：2005-08-25

    申请号：PCT/IB2004051150

    申请日：2004-07-07

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  KOEHLER THOMAS ,  GRASS MICHAEL ,  KUHN MICHAEL HARALD ,  PROKSA ROLAND

    Inventor： KOEHLER THOMAS ,  GRASS MICHAEL ,  KUHN MICHAEL HARALD ,  PROKSA ROLAND

    IPC: G06T7/20 ,  G06T11/00

    CPC classification number: G06T7/20 ,  G06T11/005 ,  G06T2207/10081 ,  G06T2207/30048 ,  G06T2211/404 ,  G06T2211/412

    Abstract: 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 qualify maybe provided.

    Abstract translation: 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。

    24.
    发明专利
    未知

    公开(公告)号：DE602004011834T2

    公开(公告)日：2009-02-12

    申请号：DE602004011834

    申请日：2004-11-26

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： BUELOW THOMAS ,  GRASS MICHAEL ,  LORENZ CHRISTIAN ,  MANZKE ROBERT

    IPC: G06T5/00

    Abstract: Coronary artery segmentation is a crucial task in cardiac CT image processing. This is often a tedious task performed manually by an operator. According to the present invention, a method is provided which combines data from multiple cardiac phases during the segmentation process in order to deliver a complete and continuous coronary vessel tree. Advantageously, this may allow for an improved visualization and segmentation of vessels, for example, in coronary CTA.

    25.
    发明专利
    未知

    公开(公告)号：DE50109118D1

    公开(公告)日：2006-05-04

    申请号：DE50109118

    申请日：2001-04-26

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： GRASS MICHAEL ,  KOEHLER THOMAS ,  PROKSA ROLAND

    IPC: G01B15/00 ,  G06T11/00 ,  A61B6/03 ,  G06T1/00

    Abstract: The invention relates to a computed tomography method which involves a conical radiation beam which irradiates the examination zone along at least two trajectories that are offset relative to one another in the direction of the axis of rotation, the distance between the trajectories being chosen to be so large that voxels in an intermediate region are not completely irradiated neither in one trajectory nor in the other trajectory. The absorption distribution in this intermediate region can be reconstructed without loss of image quality when measuring data from both trajectories are combined.

    28.
    发明专利
    未知

    公开(公告)号：DE602004015503D1

    公开(公告)日：2008-09-11

    申请号：DE602004015503

    申请日：2004-12-01

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： MANZKE ROBERT ,  GRASS MICHAEL

    IPC: A61B6/00 ,  A61B6/03

    Abstract: The invention relates to a computer tomography method in which a bundle of rays passes through an object that is moving periodically, in particular a heart. During the acquisition of measured values, a movement signal dependent on the movement of the object is sensed. From this movement signal are determined periodically repeated phases of movement, after which a plurality of intermediate images of a region of the object are reconstructed, in particular at a low resolution, using measured values whose times of acquisition were situated in different phases of movement, thus enabling each intermediate image to be assigned to a phase of movement. The phase of movement in which the object moved least in the region is then identified by determining the intermediate image having the fewest motion artifacts. Finally, a computer tomographic image of the region is reconstructed, in particular with a high spatial resolution, from measured values whose times of acquisition were situated in the phase of movement in which there was the least movement by the object in said region.

    29.
    发明专利
    未知

    公开(公告)号：DE602004011834D1

    公开(公告)日：2008-03-27

    申请号：DE602004011834

    申请日：2004-11-26

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： BUELOW THOMAS ,  GRASS MICHAEL ,  LORENZ CHRISTIAN ,  MANZKE ROBERT

    IPC: G06T5/00

    Abstract: Coronary artery segmentation is a crucial task in cardiac CT image processing. This is often a tedious task performed manually by an operator. According to the present invention, a method is provided which combines data from multiple cardiac phases during the segmentation process in order to deliver a complete and continuous coronary vessel tree. Advantageously, this may allow for an improved visualization and segmentation of vessels, for example, in coronary CTA.

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