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    Computer tomography apparatus having a partial ring x-ray source and a partial ring detector
    1.
    发明授权
    Computer tomography apparatus having a partial ring x-ray source and a partial ring detector 失效
    具有部分环X射线源和部分环检测器的计算机断层摄影装置

    公开(公告)号：US5377249A

    公开(公告)日：1994-12-27

    申请号：US980974

    申请日：1992-11-24

    申请人： Karl Wiesent ,  Ernstpeter Ruehrnschopf ,  Johannes Ebersberger

    发明人： Karl Wiesent ,  Ernstpeter Ruehrnschopf ,  Johannes Ebersberger

    IPC分类号： A61B6/03 ,  G01T1/29 ,  G01N23/083

    CPC分类号： A61B6/032 ,  A61B6/4028 ,  G01T1/2985 ,  Y10S378/901

    摘要： A computer tomography apparatus has an anode in the form of a partial ring along which a focus is electronically moved to generate a scan beam from different directions, and a partial ring detector which generates a number of data sets from the attenuated radiation at the different directions, includes a computer wherein the data sets are weighted independently of the measured values so that image reconstruction can be undertaken with a standard computer tomography method, such as convolution and back-projection. The weighting is selected so that the boundaries of regions having constant values represent smooth curves in the sinogram. The image can thereby be reconstructed without complementary interpolation, which is normally required in computer tomography systems having a partial ring x-ray source and detector.

    摘要翻译： 计算机断层摄影装置具有呈部分环形式的阳极，沿着该阳极电子移动聚焦以从不同方向产生扫描光束;以及部分环形检测器，其从不同方向的衰减辐射产生多个数据集 包括计算机，其中数据集被独立于测量值加权，使得可以使用诸如卷积和反投影的标准计算机断层摄影方法进行图像重建。 选择加权使得具有恒定值的区域的边界表示正弦图中的平滑曲线。 因此，无需互补插值即可重建图像，这是在具有部分环X射线源和检测器的计算机断层摄影系统中通常需要的。

    Tomosynthetic image reconstruction method, and diagnostic device operating according to the method
    4.
    发明授权
    Tomosynthetic image reconstruction method, and diagnostic device operating according to the method 有权
    复合图像重建方法，诊断装置按照该方法操作

    公开(公告)号：US07558366B2

    公开(公告)日：2009-07-07

    申请号：US11685280

    申请日：2007-03-13

    申请人： Karl Barth ,  Wolfgang Haerer ,  Thomas Mertelmeier ,  Karl Wiesent

    发明人： Karl Barth ,  Wolfgang Haerer ,  Thomas Mertelmeier ,  Karl Wiesent

    IPC分类号： A61B6/04 ,  H05G1/60

    CPC分类号： G06T11/006 ,  G06T2211/421

    摘要： In a tomosynthetic image reconstruction method and diagnostic device operating with such a method, a tomosynthetic 3D x-ray image is reconstructed by a discrete filtered back projection from a number of individual digital projection data recorded from different project angles within a restricted angular range, in which at least one filtering is performed with a convolution kernel that, in the local area outside of its central value, corresponds to an exponential function.

    摘要翻译： 在使用这种方法操作的断层合成图像重建方法和诊断装置中，通过离散的滤波反投影，从在受限角度范围内的不同投影角度记录的多个单独的数字投影数据重构断层合成3D X射线图像， 其中使用在其中心值之外的局部区域中对应于指数函数的卷积核进行至少一个滤波。

    Method for reconstructing 3D image data with respect to a volume of interest of an examination subject
    7.
    发明授权
    Method for reconstructing 3D image data with respect to a volume of interest of an examination subject 有权
    相对于检查对象的兴趣体重建3D图像数据的方法

    公开(公告)号：US06720966B2

    公开(公告)日：2004-04-13

    申请号：US09742117

    申请日：2000-12-22

    申请人： Karl Barth ,  Thomas Brunner ,  Matthias Mitschke ,  Karl Wiesent

    发明人： Karl Barth ,  Thomas Brunner ,  Matthias Mitschke ,  Karl Wiesent

    IPC分类号： G06T1700

    CPC分类号： G06T11/005

    摘要： In a method for reconstructing 3D image data, a number of 2D central projections from different projection directions is acquired with a planar detector and radiation emanating from a radiation source, and a volume of interest of an examination subject to be three-dimensionally reconstructed is identified by mixing in variable and mutually dependent marks into at least two 2D central projections.

    摘要翻译： 在重建3D图像数据的方法中，使用平面检测器和从辐射源发出的辐射来获取来自不同投影方向的多个2D中心投影，并且识别经受三维重建的检查的感兴趣体积被识别 通过将可变和相互依赖的标记混合到至少两个2D中心突起中。

    3D image reconstruction method for use in computed tomography
    8.
    发明授权
    3D image reconstruction method for use in computed tomography 有权
    用于计算机断层扫描的3D图像重建方法

    公开(公告)号：US6125163A

    公开(公告)日：2000-09-26

    申请号：US236046

    申请日：1999-01-22

    申请人： Karl Barth ,  Karl Wiesent

    发明人： Karl Barth ,  Karl Wiesent

    IPC分类号： A61B6/03 ,  G06T1/00 ,  G06T11/00

    CPC分类号： G06T11/006 ,  G06T2211/421 ,  Y10S378/901

    摘要： In an image reconstruction method for 3-d image reconstruction, particularly a fast reconstruction method for rotational angiography employing a pyramidal X-ray beam and a surface detector, image reconstruction is accomplished in a computer using an algorithm of the filtered back-projection type, and, outside the zero component, the components of the convolution kernel correspond to an exponential function. A particularly fast image reconstruction is achieved with such a convolution kernel by using recursive filtering.

    摘要翻译： 在用于3-d图像重建的图像重建方法中，特别是使用锥体X射线束和表面检测器的旋转血管造影的快速重建方法，在使用滤波反投影型算法的计算机中完成图像重建， 并且在零分量之外，卷积核的分量对应于指数函数。 通过使用递归滤波，通过这样的卷积核实现特别快速的图像重建。