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    Method for evaluating projection datasets of an object undergoing examination
    1.
    发明授权
    Method for evaluating projection datasets of an object undergoing examination 有权
    评估正在进行检查的物体的投影数据集的方法

    公开(公告)号：US07916827B2

    公开(公告)日：2011-03-29

    申请号：US11824456

    申请日：2007-06-29

    申请人： Jan Boese ,  Günter Lauritsch ,  Thomas Redel

    发明人： Jan Boese ,  Günter Lauritsch ,  Thomas Redel

    IPC分类号： A61B6/03

    CPC分类号： A61B6/032 ,  A61B6/4441 ,  Y10S378/901

    摘要： The invention relates to a method for evaluating projection datasets of an object undergoing examination. Each projection dataset is assigned a swiveling angle and a recording instant. Each data element of each projection dataset defines a projection line along which an X-ray beam has traveled from an X-ray source to an X-ray detector. The projection datasets form recording groups each of which corresponds with the projection datasets that were recorded during a single swiveling action. A computer determines reconstruction datasets using the projection datasets. Each reconstruction dataset contains at least one reconstruction data value assigned to a reconstruction line. Using a temporal interpolation, the computer determines the reconstruction datasets in such a way that they refer to a uniform reconstruction time. The computer determines a reconstruction of the object undergoing examination using the reconstruction datasets.

    摘要翻译： 本发明涉及一种用于评估正在进行检查的对象的投影数据集的方法。 每个投影数据集被分配一个旋转角度和一个记录时刻。 每个投影数据集的每个数据元素定义了X射线束从X射线源行进到X射线检测器的投影线。 投影数据集形成记录组，每个记录组与在单次旋转动作期间记录的投影数据集相对应。 计算机使用投影数据集确定重建数据集。 每个重建数据集包含分配给重建线的至少一个重建数据值。 使用时间插值，计算机以这样的方式确定重建数据集，即它们指的是统一的重建时间。 计算机使用重建数据集确定正在进行检查的对象的重建。

    Operating method for X-ray equipment
    3.
    发明授权
    Operating method for X-ray equipment 有权
    X射线设备的操作方法

    公开(公告)号：US07599466B2

    公开(公告)日：2009-10-06

    申请号：US11400833

    申请日：2006-04-07

    申请人： Jan Boese ,  Günter Lauritsch

    发明人： Jan Boese ,  Günter Lauritsch

    IPC分类号： A61B6/00

    CPC分类号： A61B6/4441 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541

    摘要： A control device pivots an X-ray arrangement repeatedly between two final angular positions about a pivot axis. Projections of an object arranged in the region of the pivot axis and moving iteratively are detected at a plurality of angular positions and supplied to the control device. The control device also receives a phase position referring to the object and assigns the phase position to each projection. A computer selects one or more projections whose phase position corresponds at least approximately to a reconstruction phase position. If the computer has selected one projection for an angular position, it determines this projection as a reconstruction projection. If the computer has selected a plurality of projections for an angular position, it detects the reconstruction projection using these projections. The computer then detects a three-dimensional reconstruction of the object based on the reconstruction projection.

    摘要翻译： 控制装置在关于枢转轴线的两个最终角位置之间重复地枢转X射线装置。 在多个角位置处检测布置在枢轴轴线的区域并且迭代地移动的物体的投影并提供给控制装置。 控制装置还接收参考对象的相位位置，并将相位位置分配给每个投影。 计算机选择其相位位置至少近似于重建相位位置的一个或多个投影。 如果计算机已经为角位置选择了一个投影，则它将该投影确定为重建投影。 如果计算机已经为角位置选择了多个投影，则使用这些投影来检测重建投影。 然后，计算机基于重建投影检测对象的三维重建。

    Method and device for generating a three-dimensional image data record of a moving object by means of X-ray tomography
    4.
    发明授权
    Method and device for generating a three-dimensional image data record of a moving object by means of X-ray tomography 有权
    用于通过X射线层析成像生成运动物体的三维图像数据记录的方法和装置

    公开(公告)号：US07899223B2

    公开(公告)日：2011-03-01

    申请号：US11238552

    申请日：2005-09-29

    申请人： Jan Boese ,  Günter Lauritsch

    发明人： Jan Boese ,  Günter Lauritsch

    IPC分类号： G06K9/00 ,  A61B6/00

    CPC分类号： G06T11/005 ,  A61B5/0402 ,  A61B5/0456 ,  A61B5/7207 ,  A61B6/02 ,  A61B6/032 ,  A61B6/503 ,  A61B6/504 ,  A61B6/541 ,  G06T2211/412 ,  G06T2211/421

    摘要： A precise and comparatively simple method for generating a three-dimensional image data record of a moving object using X-ray tomography and a device that is particularly suitable for implementing the method with an X-ray emitter/detector unit supported such that it can be rotated and with an evaluation unit are specified. According to the invention a number of two-dimensional raw images are grouped according to a cyclical relative time, at least two preliminary 3D image data records respectively are generated from raw images that correspond to one another according to this grouping, at least one movement matrix is derived by comparing two preliminary 3D image data records used as the source data record and the target data record respectively, a 3D image data record with compensation for movement corresponding to a reference time of the source data record is generated by applying the or each movement matrix to the associated target data record and the or each 3D image data record with compensation for movement is added to at least one further 3D image data record with compensation for movement or to another preliminary 3D-image data record corresponding to the same reference time.

    摘要翻译： 一种用于使用X射线层析成像生成运动物体的三维图像数据记录的精确且相对简单的方法，以及特别适合于利用支持X射线发射器/检测器单元来实现该方法的装置，使得其可以 指定了旋转和评估单元。 根据本发明，根据循环相对时间对多个二维原始图像进行分组，根据该分组，从原始图像分别生成至少两个初步3D图像数据记录，至少一个运动矩阵 是通过比较分别用作源数据记录和目标数据记录的两个初步3D图像数据记录，通过应用该或每个运动来生成具有与源数据记录的参考时间相对应的运动补偿的3D图像数据记录 矩阵到相关联的目标数据记录，并且具有用于移动补偿的每个3D图像数据记录被添加到具有补偿移动的至少一个另外的3D图像数据记录或对应于相同参考时间的另一初步3D图像数据记录。

    Method and device for reconstructing a 3D image data set of a moving object
    8.
    发明授权
    Method and device for reconstructing a 3D image data set of a moving object 有权
    用于重建移动物体的3D图像数据集的方法和装置

    公开(公告)号：US07315605B2

    公开(公告)日：2008-01-01

    申请号：US11453604

    申请日：2006-06-15

    申请人： Jan Boese ,  Günter Lauritsch

    发明人： Jan Boese ,  Günter Lauritsch

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/5217 ,  A61B6/541 ,  G06T11/005 ,  G06T2211/404 ,  G06T2211/412 ,  Y10S378/901

    摘要： The invention relates to a method and device for reconstructing a 3D image data set of a moving object from a set of projection images, which were recorded at least partially one after the other from different projection directions. The projection images are hereby assigned by ECG gating to a motion phase of the object in each instance and an incomplete 3D image of the object is computed in this motion phase from these few projection images using local tomography. Motion fields are determined from these 3D images and are used during the final 3D image reconstruction for motion correction.

    摘要翻译： 本发明涉及一种用于从一组投影图像重建运动物体的3D图像数据集的方法和装置，其从不同的投影方向至少部分地一个接一个地记录。 因此，通过ECG门控将投影图像分配给每个实例中的对象的运动相位，并且使用局部断层摄影从这些几个投影图像在该运动相位中计算对象的不完整3D图像。 运动场由这些3D图像确定，并在运动校正的最终3D图像重建期间使用。