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1. 发明授权

US08150131B2 Computer tomography method for determining an object region with the aid of projection images 有权
标题翻译：借助于投影图像确定对象区域的计算机断层摄影方法
公开(公告)号：US08150131B2
公开(公告)日：2012-04-03
申请号：US12317061
申请日：2008-12-18
申请人： Wolfgang Härer , Ernst-Peter Rührnschopf , Bernhard Scholz
发明人： Wolfgang Härer , Ernst-Peter Rührnschopf , Bernhard Scholz
IPC分类号： G06K9/00 , G06K9/48 , H01L27/00
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4441 , G01N2223/401 , G01N2223/419 , G01N2223/421 , G01N2223/612
摘要： In a computer tomography method an object region of the object being examined is determined in that projection beams that are linked with maximum attenuation are sought in cropped projection images. A central point of the object region is then determined and the object sections associated with the projection beams plotted on the central point. The object region can be at least approximately determined using the end points of the object sections.
摘要翻译：在计算机断层摄影方法中，确定被检查物体的物体区域是在裁切的投影图像中寻找与最大衰减相关联的投影光束。然后确定对象区域的中心点，并将与投影光束相关联的对象部分绘制在中心点上。可以使用对象部分的端点至少近似地确定对象区域。

2. 发明授权

US08045774B2 Method for creating material-selective volume images 有权
标题翻译：创建材料选择性体积图像的方法
公开(公告)号：US08045774B2
公开(公告)日：2011-10-25
申请号：US12283418
申请日：2008-09-11
申请人： Wolfgang Härer , Ernst-Peter Rührnschopf , Bernhard Scholz
发明人： Wolfgang Härer , Ernst-Peter Rührnschopf , Bernhard Scholz
IPC分类号： G06K9/00
CPC分类号： A61B6/405 , A61B6/032 , A61B6/482
摘要： A method for creating material-selective volume images of various material components of an object to be examined is proposed. The method is based on multi-spectral projected images captured from various directions of projection, the images being captured using an X-ray machine, and makes it possible to quantitively exactly determine the material-selective volume images by way of iteration.
摘要翻译：提出了一种用于创建要检查的对象的各种材料部件的材料选择性体积图像的方法。该方法基于从各种投影方向拍摄的多光谱投影图像，使用X射线机捕获图像，并且可以通过迭代定量地精确地确定材料选择性体积图像。

3. 发明申请

US20090086883A1 Method for creating material-selective volume images 有权
标题翻译：创建材料选择性体积图像的方法
公开(公告)号：US20090086883A1
公开(公告)日：2009-04-02
申请号：US12283418
申请日：2008-09-11
申请人： Wolfgang Härer , Ernst-Peter Rührnschopf , Bernhard Scholz
发明人： Wolfgang Härer , Ernst-Peter Rührnschopf , Bernhard Scholz
IPC分类号： H05G1/64
CPC分类号： A61B6/405 , A61B6/032 , A61B6/482
摘要： A method for creating material-selective volume images of various material components of an object to be examined is proposed. The method is based on multi-spectral projected images captured from various directions of projection, the images being captured using an X-ray machine, and makes it possible to quantitively exactly determine the material-selective volume images by way of iteration.
摘要翻译：提出了一种用于创建要检查的对象的各种材料部件的材料选择性体积图像的方法。该方法基于从各种投影方向拍摄的多光谱投影图像，使用X射线机捕获图像，并且可以通过迭代定量地精确地确定材料选择性体积图像。

4. 发明授权

US07916829B2 Computed tomography method 有权
标题翻译：计算机断层扫描法
公开(公告)号：US07916829B2
公开(公告)日：2011-03-29
申请号：US12313638
申请日：2008-11-21
申请人： Wolfgang Härer , Alois Nöttling , Ernst-Peter Rührnschopf
发明人： Wolfgang Härer , Alois Nöttling , Ernst-Peter Rührnschopf
IPC分类号： G01N23/083 , G01N23/00 , G21K1/00
CPC分类号： A61B6/032 , A61B6/4291 , A61B6/5282 , A61B6/585 , A61B6/589
摘要： The invention relates to a computed tomography method. The airgap associated with a projection direction is determined by determining, in the projection images, edge pixels which map object edges on a detector. By back-projecting the edge pixels in an object image space it is possible to determine an envelope polygon for an outline contour of the examination object. The width of the airgap associated with a specific projection direction can then be determined on the basis of the envelope polygon. Exact knowledge of the current airgap serves to improve the scattered radiation correction.
摘要翻译：本发明涉及一种计算机断层摄影方法。通过在投影图像中确定在检测器上映射物体边缘的边缘像素来确定与投影方向相关联的气隙。通过将边缘像素反投影在对象图像空间中，可以确定检查对象的轮廓轮廓的包络多边形。然后可以基于包络多边形来确定与特定投影方向相关联的气隙的宽度。对当前气隙的准确了解有助于改善散射辐射校正。

5. 发明授权

US08121372B2 Method for reducing image noise in the context of capturing an image using two different radiation spectra 有权
标题翻译：在使用两个不同的辐射光谱拍摄图像的上下文中降低图像噪声的方法
公开(公告)号：US08121372B2
公开(公告)日：2012-02-21
申请号：US12229755
申请日：2008-08-26
申请人： Wolfgang Härer , Dr. Klaus Klingenbeck-Regn , Ernst-Peter Rührnschopf
发明人： Wolfgang Härer , Dr. Klaus Klingenbeck-Regn , Ernst-Peter Rührnschopf
IPC分类号： G01K9/00
CPC分类号： G06K9/40 , A61B6/032 , A61B6/4035 , A61B6/482 , G06T5/002 , G06T5/50 , G06T2207/10116 , G06T2207/30004
摘要： The invention relates to a method for reducing image noise in the context of capturing at least one radiation-based image of a region of interest using two different radiation spectra, in particular two different x-ray radiation spectra, comprising the following steps: capturing raw images of the region of interest using the two different radiation spectra with in each case mutually paired measured values; and to separate different materials in the region of interest, applying to the captured raw images at least one inversion operator with integrated noise filtering, said operator describing a transition from a measured value pair to an assigned reconstruction value pair.
摘要翻译：本发明涉及一种用于在使用两个不同的辐射光谱，特别是两个不同的X射线辐射光谱捕获感兴趣区域的至少一个基于辐射的图像的上下文中降低图像噪声的方法，包括以下步骤：使用两种不同辐射光谱的感兴趣区域的图像，在每种情况下彼此成对测量值; 并且在感兴趣区域中分离不同的材料，将具有集成噪声滤波的至少一个反演算子应用于所捕获的原始图像，所述算子描述从测量值对到分配的重建值对的转变。

6. 发明授权

US08036453B2 Analytical method for a number of two-dimensional projection images of a three-dimensional examination object 有权
标题翻译：用于三维检查对象的多个二维投影图像的分析方法
公开(公告)号：US08036453B2
公开(公告)日：2011-10-11
申请号：US11986857
申请日：2007-11-27
申请人： Wolfgang Härer , Marcus Pfister
发明人： Wolfgang Härer , Marcus Pfister
IPC分类号： G06K9/00
CPC分类号： G06T11/006
摘要： A number of two-dimensional projection images of a three-dimensional examination object are assigned image times and imaging parameters. The projection images are combined into reconstruction groups including projection images with image times specifically assigned or within a time interval specific to the reconstruction groups. The reconstruction groups are determined in such a way that three-dimensional reconstructions of the examination object with direction-dependent local resolution can be determined based on the projection images of the reconstruction groups; it is not possible to determine three-dimensional reconstructions of the examination object with direction-independent local resolution. Three-dimensional reconstructions of the examination are determined based on the projection images of the reconstruction groups. Reconstruction times are determined based on the image times assigned to the projection images of the reconstruction groups and assigned to the three-dimensional reconstructions. Further analyses are performed as a function of the temporal sequence of the three-dimensional reconstructions.
摘要翻译：将三维检查对象的多个二维投影图像分配给图像时间和成像参数。将投影图像组合成重建组，包括具有特定分配的图像时间的投影图像或者在重建组特有的时间间隔内。确定重建组，使得可以基于重建组的投影图像来确定具有方向依赖性局部分辨率的检查对象的三维重建; 不可能用方向独立的局部分辨率来确定检查对象的三维重建。根据重建组的投影图像确定检查的三维重建。基于分配给重建组的投影图像的图像时间并分配给三维重建来确定重建时间。作为三维重建的时间序列的函数进行进一步的分析。

7. 发明授权

US08126236B2 Method and device for the separate three-dimensional representation of arteries and veins in an examination object and device 有权
标题翻译：用于检查对象和装置中动脉和静脉的单独三维表示的方法和装置
公开(公告)号：US08126236B2
公开(公告)日：2012-02-28
申请号：US12283419
申请日：2008-09-11
申请人： Wolfgang Härer , Michael Zellerhoff
发明人： Wolfgang Härer , Michael Zellerhoff
IPC分类号： A61B6/03
CPC分类号： A61B6/504 , A61B6/466 , A61B6/481 , Y10S378/901
摘要： Method for three-dimensional representation of arteries and/or veins in an object by a tomography x-ray device is proposed. A mask pass with N projections at N angular positions without contrast agent is implemented. A first filler pass with M projections at M angular positions after injecting a contrast agent, where M
摘要翻译：提出了一种通过层析X射线装置对物体中动脉和/或静脉进行三维表示的方法。实现具有N个投影在N个角位置的无造影剂的掩模通过。在注射造影剂之后的M个角位置的M个投影的第一填充物通过，其中实施M

8. 发明授权

US07796723B2 Method for providing 3D image data and system for taking x-ray images 有权
标题翻译：提供3D图像数据的方法和用于摄取X射线图像的系统
公开(公告)号：US07796723B2
公开(公告)日：2010-09-14
申请号：US11888882
申请日：2007-08-02
申请人： Wolfgang Härer , Michael Zellerhoff
发明人： Wolfgang Härer , Michael Zellerhoff
IPC分类号： A61B6/03
CPC分类号： A61B6/02 , A61B6/4458
摘要： In a known type of tomosynthesis x-ray source and x-ray detector are linearly moved and x-rays images are taken for a large number of positions, the images being reconstructed to give a 3D image record. According to the invention x-ray source and x-ray detector are swiveled and a sequence of x-rays is subsequently taken again, x-ray source and x-ray detector again being moved in a straight line. One drawback of simple tomosynthesis with movement in a straight line is suppressed thereby, the drawback being that the quality of reconstruction is particularly poor in a certain direction.
摘要翻译：在已知类型的断层合成中，X射线源和X射线检测器被线性移动，并且对于大量的位置拍摄X射线图像，重建图像以给出3D图像记录。根据本发明，X射线源和X射线检测器被旋转，并且随后再次取得一系列X射线，x射线源和X射线检测器再次以直线移动。抑制了直线运动的简单断层合成的一个缺点在于其重要性在一定方向上特别差。

9. 发明授权

US07899152B2 Method for the three-dimensional representation of a moving structure by a tomographic method 有权
标题翻译：通过断层摄影法对移动结构进行三维表示的方法
公开(公告)号：US07899152B2
公开(公告)日：2011-03-01
申请号：US12221938
申请日：2008-08-07
申请人： Jan Boese , Wolfgang Härer , Michael Zellerhoff
发明人： Jan Boese , Wolfgang Härer , Michael Zellerhoff
IPC分类号： A61B6/00
CPC分类号： A61B6/025 , A61B6/027 , A61B6/4441 , A61B6/466 , A61B6/481 , A61B6/503 , A61B6/504 , A61B6/507 , G06T11/006 , G06T2211/404 , G06T2211/412 , G06T2211/436
摘要： The invention relates to a method for a three-dimensional representation of a moving structure by a tomographic method, in which during one recording pass a series of projection recordings is registered by an imaging unit at different recording angles between a start position and an end position, it being possible to reconstruct three-dimensional image data from the projection recordings with the following steps: a) generation of tomosynthesis projection recordings along a tomosynthesis scanning path; b) interpolation of the data of the tomosynthesis projection recordings in accordance with an interpolation algorithm in order to generate a projection data set; c) use of a tomosynthesis reconstruction method on the projection data set in order to generate a tomosynthesis volume image; d) repetition of steps b) and c) for all times of interest, and e) display of tomosynthesis representations from the tomosynthesis volume images.
摘要翻译：本发明涉及一种用于通过断层摄影方法对运动结构进行三维表示的方法，其中在一次记录通过期间，成像单元以起始位置和结束位置之间的不同记录角度登记一系列投影记录可以通过以下步骤从投影记录重建三维图像数据：a）沿着断层合成扫描路径生成断层合成投影记录; b）根据插值算法对所述断层合成投影记录的数据进行插值，以生成投影数据集; c）在投影数据集上使用断层合成重建方法，以便产生断层合成体积图像; d）对所有感兴趣的时间重复步骤b）和c），以及e）从断层合成体积图像显示断层合成表示。

10. 发明授权

US07653172B2 Method for generating tomographical recordings of a partially cyclically moving examination object 有权
标题翻译：用于产生部分循环运动的检查对象的断层记录的方法
公开(公告)号：US07653172B2
公开(公告)日：2010-01-26
申请号：US11903941
申请日：2007-09-25
申请人： Wolfgang Härer , Holger Kunze
发明人： Wolfgang Härer , Holger Kunze
IPC分类号： A61B6/00
CPC分类号： A61B8/5276 , A61B6/032 , A61B6/503 , A61B6/527 , A61B6/541 , G06T11/006 , G06T2211/412 , G06T2211/424
摘要： The invention relates to a method for generating tomographical recordings of a partially cyclically moving examination object by a tomography system and a tomography system, comprising the steps of: a spatial scanning of the examination object taking place using at least one detector, which generates detector output data; movement information of the moving subarea of the examination object being recorded during the scanning and being assigned to the detector output data or stored in a manner which correlates to the detector output data; and tomographical image data being reconstructed from the measured detector output data in a number of iteration steps. The invention is characterized in that iteration takes place in at least two iteration stages, with data records being used from the detector output data of different cycle phase regions in at least two iteration stages.
摘要翻译：本发明涉及一种用于通过断层摄影系统和断层摄影系统产生部分循环运动的检查对象的断层记录的方法，包括以下步骤：使用至少一个检测器进行检查对象的空间扫描，所述检测器产生检测器输出数据; 在扫描期间被记录的检查对象的移动子区域的运动信息被分配给检测器输出数据或以与检测器输出数据相关的方式存储; 并且在多个迭代步骤中从所测量的检测器输出数据重构断层图像数据。本发明的特征在于迭代发生在至少两个迭代阶段，其中在至少两个迭代阶段中从不同周期相位区域的检测器输出数据使用数据记录。

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