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1. 发明申请

US20130004051A1 METHOD FOR ACQUIRING A 3D IMAGE DATASET FOR AN IMAGE OBJECT 有权
标题翻译：用于获取图像对象的3D图像数据的方法
公开(公告)号：US20130004051A1
公开(公告)日：2013-01-03
申请号：US13527843
申请日：2012-06-20
申请人： Klaus Klingenbeck , Ernst-Peter Rührnschopf , Bernhard Scholz
发明人： Klaus Klingenbeck , Ernst-Peter Rührnschopf , Bernhard Scholz
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/416 , G06T2211/424
摘要： A method for acquiring a 3D image dataset for an image object based on a plurality of 2D image datasets relating to the image object is proposed. A scattered radiation is taken into account in an acquisition operator used in the method for the optimum reconstruction of the 3D image dataset. The acquisition operator should be as close as possible to the real mapping operator.
摘要翻译：提出了一种基于与图像对象相关的多个2D图像数据集获取图像对象的3D图像数据集的方法。在用于3D图像数据集的最佳重建的方法中使用的采集算子中考虑散射辐射。采集操作员应尽可能靠近真实的映射运算符。

2. 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。

3. 发明授权

US07711083B2 Method for reconstructing a three-dimensional image volume and x-ray devices 有权
标题翻译：重建三维图像体积和x射线装置的方法
公开(公告)号：US07711083B2
公开(公告)日：2010-05-04
申请号：US11897348
申请日：2007-08-30
申请人： Benno Heigl , Stefan Hoppe , Joachim Hornegger , Ernst-Peter Rührnschopf , Holger Scherl , Bernhard Scholz , Michael Zellerhoff
发明人： Benno Heigl , Stefan Hoppe , Joachim Hornegger , Ernst-Peter Rührnschopf , Holger Scherl , Bernhard Scholz , Michael Zellerhoff
IPC分类号： A61B6/00
CPC分类号： G01N23/046 , A61B6/027 , A61B6/032 , A61B6/4458 , G01N2223/419 , G01N2223/612
摘要： To enable an artifact free reconstruction even in the case of large regions of interest and with scanning paths of below 360°, provision is made for a method, with which a three-dimensional image volume is reconstructed from a number of two-dimensional projection images of a region of interest, which were recorded about the region of interest during a rotation of a recording system, comprising an x-ray source with a focal point and a detector, by calculating the gray scale values of the voxels of the image volume by back projection of the projection images, with which each two-dimensional projection images is composed in each instance from at least two individual projection images to form an extended two-dimensional projection image, with the respectively at least two individual projection images being recorded with a constant relative position between the focal point and the region of interest.
摘要翻译：为了即使在感兴趣的大区域和360度以下的扫描路径的情况下也能够实现无伪影重建，提供一种方法，利用该方法从多个二维投影图像重建三维图像体积通过计算图像体积的体素的灰度值，通过计算图像体积的体素的灰度值，记录关于记录系统旋转期间的感兴趣区域的感兴趣区域，其包括具有焦点和检测器的x射线源投影图像的背投影，每个二维投影图像在每个实例中由至少两个单独的投影图像组成，以形成扩展的二维投影图像，分别具有至少两个单独的投影图像被记录有焦点和感兴趣区域之间的常数相对位置。

4. 发明授权

US08885908B2 Method for acquiring a 3D image dataset for an image object 有权
标题翻译：用于获取图像对象的3D图像数据集的方法
公开(公告)号：US08885908B2
公开(公告)日：2014-11-11
申请号：US13527843
申请日：2012-06-20
申请人： Klaus Klingenbeck , Ernst-Peter Rührnschopf , Bernhard Scholz
发明人： Klaus Klingenbeck , Ernst-Peter Rührnschopf , Bernhard Scholz
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/006 , G06T2211/416 , G06T2211/424
摘要： A method for acquiring a 3D image dataset for an image object based on a plurality of 2D image datasets relating to the image object is proposed. A scattered radiation is taken into account in an acquisition operator used in the method for the optimum reconstruction of the 3D image dataset. The acquisition operator should be as close as possible to the real mapping operator.
摘要翻译：提出了一种基于与图像对象相关的多个2D图像数据集获取图像对象的3D图像数据集的方法。在用于3D图像数据集的最佳重建的方法中使用的采集算子中考虑散射辐射。采集操作员应尽可能靠近真实的映射运算符。

5. 发明申请

US20120140875A1 METHOD FOR OBTAINING A 3D RECONSTRUCTION OF AN OBJECT, AND X-RAY DEVICE 有权
标题翻译：用于获取对象的3D重建的方法和X射线装置
公开(公告)号：US20120140875A1
公开(公告)日：2012-06-07
申请号：US13308747
申请日：2011-12-01
申请人： Frank Dennerlein , Ernst-Peter Rührnschopf
发明人： Frank Dennerlein , Ernst-Peter Rührnschopf
IPC分类号： A61B6/03 , G21K3/00
CPC分类号： A61B6/4007 , A61B6/03 , A61B6/032 , A61B6/4028 , A61B6/4035 , A61B6/4233 , A61B6/4441 , A61B6/482 , G06T11/005 , G06T2211/408
摘要： 3D reconstructions can be calculated from grayscale X-ray images taken at different angular positions of an X-ray source and detector rotatable about a common axis. In the present case, X-ray radiation is applied to the object to be imaged such that one half of the X-ray detector receives radiation which differs in one characteristic from the radiation received by the second half of the detector via the object. A kind of dual-energy imaging can then be carried out in a single pass through the angular positions, enabling two 3D reconstructions to be generated simultaneously and then merged.
摘要翻译：可以从在X射线源的不同角度位置拍摄的灰度X射线图像和可围绕公共轴可旋转的检测器计算3D重建。在这种情况下，X射线辐射被施加到待成像的物体上，使得X射线检测器的一半接收到一个特性与通过物体的检测器的后半部分接收的辐射不同的辐射。然后可以在单个通过角位置中执行一种双能量成像，使得能够同时产生两个3D重建，然后合并。

6. 发明授权

US08041096B2 Method for creating mass density images on the basis of attenuation images captured at different energy levels 有权
标题翻译：基于在不同能级捕获的衰减图像创建质量密度图像的方法
公开(公告)号：US08041096B2
公开(公告)日：2011-10-18
申请号：US12148791
申请日：2008-04-22
申请人： Philipp Bernhardt , Ernst-Peter Rührnschopf
发明人： Philipp Bernhardt , Ernst-Peter Rührnschopf
IPC分类号： G06K9/00 , G01N23/04
CPC分类号： A61B6/00 , A61B6/4035 , A61B6/482 , A61B6/583
摘要： The invention relates to a method for creating scatter-corrected mass density image in dual energy X-ray absorptiometry. The mass density image is created using additional information provided by attenuation images at different energy levels in an inhomogeneous correction image area. A multi-dimensional mass density is found that is consistent for a plurality of the attenuation images by inverting a primary radiation function. A scatter fraction is determined on the basis of the multi-dimensional mass density.
摘要翻译：本发明涉及一种用于在双能X射线吸收测定法中产生散射校正质量密度图像的方法。使用由不均匀校正图像区域中的不同能量级别的衰减图像提供的附加信息来创建质量密度图像。发现通过反转主辐射函数对多个衰减图像是一致的多维质量密度。基于多维质量密度确定散射分数。

7. 发明授权

US07760855B2 Method for scattered radiation correction 有权
标题翻译：散射辐射校正方法
公开(公告)号：US07760855B2
公开(公告)日：2010-07-20
申请号：US11906068
申请日：2007-09-28
申请人： Ernst-Peter Rührnschopf , Philipp Bernhardt
发明人： Ernst-Peter Rührnschopf , Philipp Bernhardt
IPC分类号： G01N23/201
CPC分类号： A61B6/505 , A61B6/4035 , A61B6/4291 , A61B6/482 , A61B6/50 , A61B6/5282
摘要： For scattered radiation correction in dual X-ray absorptiometry it is proposed to use the additional information supplied by the attenuation images in different energy ranges in a correction image area with homogeneous attenuation coefficients in order to determine the respective scattered radiation fraction. Toward that end, the inverse of the primary radiation function is considered and a search conducted for that scatter-to-primary ratio which leads to consistent mass per unit areas for the attenuation images recorded in different energy ranges.
摘要翻译：对于双重X射线吸收测量中的散射辐射校正，建议在具有均匀衰减系数的校正图像区域中使用由不同能量范围内的衰减图像提供的附加信息，以确定相应的散射辐射分数。为此，考虑了初级辐射函数的倒数，并且对于该分散原理比进行了搜索，这导致在不同能量范围内记录的衰减图像的每单位面积的质量一致。

8. 发明授权

US07856134B2 Method for generating image data relating to a virtually prescribable X-ray tube voltage from first and second CT image data 有权
标题翻译：用于从第一和第二CT图像数据生成与虚拟规定的X射线管电压有关的图像数据的方法
公开(公告)号：US07856134B2
公开(公告)日：2010-12-21
申请号：US12457973
申请日：2009-06-26
申请人： Ernst-Peter Rührnschopf , Martin Sedlmair , Karl Stierstorfer
发明人： Ernst-Peter Rührnschopf , Martin Sedlmair , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/482
摘要： A method for generating image data relating to a virtually prescribable X-ray tube voltage U3 from first and second dual energy CT image data is disclosed. In at least one embodiment, the method includes providing the first and second CT image data; prescribing the virtual X-ray tube voltage U3 with U3≠U1 and U3≠U2, on the basis of the first and second CT image data for two prescribable base materials A, B; determining in each case a spatial density distribution ρA(x), ρB(x), assigned to the base materials A, B, in the reconstructed object volume, ρ(x)=ρA(x)+ρB(x) holds true for a density ρ(x) of a voxel x in the reconstructed object volume; providing an effective mass attenuation coefficient U3 for the base material A, and an effective mass attenuation coefficient U3 for the base material B, the effective mass attenuation coefficients U3 and U3 respectively being valid for an X-ray spectrum S(E, U3) assigned to the virtual X-ray tube voltage U3; and determining the image data as a third distribution of linear attenuation coefficients μ3(x) in the reconstructed object volume on the basis of the following relationship: μ3(x)= U3·ρA(x)+ U3·ρB(x).
摘要翻译：公开了一种从第一和第二双能量CT图像数据生成与虚拟规定的X射线管电压U3有关的图像数据的方法。在至少一个实施例中，该方法包括提供第一和第二CT图像数据; 以U3≠U1和U3≠U2的虚拟X射线管电压U3为基础，基于两个可处方的基材A，B的第一和第二CT图像数据; 在每种情况下确定分配给重建对象体积中的基础材料A，B的空间密度分布和（r）A（x），（r），（x），（x）=＆rgr; A（x）+ ＆rgr; B（x）对于重建对象体积中的体素x的密度和（r）（x）是正确的; 为基材A提供有效的质量衰减系数<αA> U3，对于基材B有效的质量衰减系数<αB> U3，有效质量衰减系数αA> U3和<αB> U3分别对分配给虚拟X射线管电压U3的X射线光谱S（E，U3）基于以下关系，将图像数据确定为重建对象体积中的线性衰减系数μ3（x）的第三分布：μ3（x）= <αA> U3·＆rgr; A（x）+ <αB> U3·＆rgr; B（x）。

9. 发明授权

US07751525B2 Method for correcting x-ray scatter in projection radiography and computer tomography 有权
标题翻译：用于校正投影射线照相术和计算机断层扫描中的X射线散射的方法
公开(公告)号：US07751525B2
公开(公告)日：2010-07-06
申请号：US11903145
申请日：2007-09-20
申请人： Ernst-Peter Rührnschopf
发明人： Ernst-Peter Rührnschopf
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/583
摘要： The invention relates to a method for correcting x-ray scatter in projection radiography or in x-ray computer tomography, in which, for different observed objects, different scatter-correction convolution cores G are determined and in the examination of the respective objects object-specific scatter-correction convolution cores are applied to detector data which is created during the x-raying of these objects. The invention also relates to a projection radiography or x-ray computer tomography system which features programs in a processing system which executes the method described above when the system is operating.
摘要翻译：本发明涉及一种用于校正投影射线照相术或X射线计算机断层摄影术中的X射线散射的方法，其中，对于不同的观察对象，确定不同的散射校正卷积核G，并且在各个物体的检查中，特定的分散校正卷积核应用于在这些物体的x射线期间产生的检测器数据。本发明还涉及一种在系统运行时执行上述方法的处理系统中具有程序的投影射线照相或X射线计算机断层摄影系统。

10. 发明申请

US20100014737A1 Method for generating image data relating to a virtually prescribable x-ray tube voltage from first and second CT image data 有权
标题翻译：用于从第一和第二CT图像数据产生与虚拟规定的X射线管电压有关的图像数据的方法
公开(公告)号：US20100014737A1
公开(公告)日：2010-01-21
申请号：US12457973
申请日：2009-06-26
申请人： Ernst-Peter Rührnschopf , Martin Sedlmair , Karl Stierstorfer
发明人： Ernst-Peter Rührnschopf , Martin Sedlmair , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/482
摘要： A method for generating image data relating to a virtually prescribable X-ray tube voltage U3 from first and second dual energy CT image data is disclosed. In at least one embodiment, the method includes providing the first and second CT image data; prescribing the virtual X-ray tube voltage U3 with U3≠U1 and U3≠U2, on the basis of the first and second CT image data for two prescribable base materials A, B; determining in each case a spatial density distribution ρA(x), ρB(x), assigned to the base materials A, B, in the reconstructed object volume, ρ(x)=ρA(x)+ρB(x) holds true for a density ρ(x) of a voxel x in the reconstructed object volume; providing an effective mass attenuation coefficient U3 for the base material A, and an effective mass attenuation coefficient U3 for the base material B, the effective mass attenuation coefficients U3 and U3 respectively being valid for an X-ray spectrum S(E, U3) assigned to the virtual X-ray tube voltage U3; and determining the image data as a third distribution of linear attenuation coefficients μ3(x) in the reconstructed object volume on the basis of the following relationship: μ3(x)= U3·ρA(x)+ U3·ρB(x).
摘要翻译：公开了一种从第一和第二双能量CT图像数据生成与虚拟规定的X射线管电压U3有关的图像数据的方法。在至少一个实施例中，该方法包括提供第一和第二CT图像数据; 以U3U1和U3U2为基础的虚拟X射线管电压U3，根据两个可处方基材A，B的第一和第二CT图像数据; 在每种情况下确定分配给重建对象体积中的基材A，B的空间密度分布rhoA（x），rhoB（x），rho（x）= rhoA（x）+ rhoB（x）对于重建对象体积中体素x的密度rho（x）; 为基材A提供有效的质量衰减系数3和基材B的有效质量衰减系数3，有效质量衰减系数3和3分别对于分配的X射线光谱S（E，U3）有效到虚拟X射线管电压U3; 并根据以下关系确定图像数据为重建对象体积中的线性衰减系数mu3（x）的第三分布：mu3（x）= 3.rhoA（x）+ 3.rhoB（x）。

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