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71. 发明授权

US09044187B2 Post-patient dynamic filter for computed tomography (CT) 有权
标题翻译：用于计算机断层扫描（CT）的患者后动态滤波器
公开(公告)号：US09044187B2
公开(公告)日：2015-06-02
申请号：US13992302
申请日：2011-12-02
申请人： Thomas Koehler , Holger Schmitt , Roland Proksa
发明人： Thomas Koehler , Holger Schmitt , Roland Proksa
IPC分类号： A61B6/00 , A61B6/03 , G21K1/10 , A61B6/06
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/06 , A61B6/4241 , A61B6/4291 , A61B6/488 , A61B6/544 , G21K1/10
摘要： An imaging system includes a radiation source (310) configured to rotate around an examination region about a z-axis and having a focal spot that emits a radiation beam that traverses the examination region. The system further includes a radiation sensitive detector array (314) with a plurality of detector pixels that detects radiation traversing the examination region and generates projection data indicative of the detected radiation. The system further includes a dynamic post-patient filter (316) including one or more filter segments (402, 802, 902, 1004, 1102). The filter is configured to selectively and dynamically move in front of the detector array between the detector array and the examination region and into and out of a path of the radiation beam illuminating the detector pixels during scanning an object or subject based on a shape of the object or subject, thereby filtering unattenuated radiation and radiation traversing a periphery of the object or subject.
摘要翻译：成像系统包括被配置为围绕z轴围绕检查区域旋转并具有发射穿过检查区域的辐射束的焦点的辐射源（310）。该系统还包括具有多个检测器像素的辐射敏感检测器阵列（314），其检测穿过检查区域的辐射，并产生指示检测到的辐射的投影数据。该系统还包括动态的患者后过滤器（316），其包括一个或多个过滤器段（402,802,902,1004,1102）。滤波器被配置为在检测器阵列和检查区域之间选择性地和动态地在检测器阵列之前移动，并且在扫描对象或被摄体期间，在扫描对象或被摄体期间进入和离开照射检测器像素的辐射束的路径，物体或物体，从而过滤未被衰减的辐射和穿过物体或物体的周边的辐射。

72. 发明授权

US09002090B2 Forward projection apparatus 有权
标题翻译：前投投影仪
公开(公告)号：US09002090B2
公开(公告)日：2015-04-07
申请号：US13988349
申请日：2011-11-16
申请人： Thomas Koehler , Bernhard Johannes Brendel , Holger Schmitt , Rolf Dieter Bippus
发明人： Thomas Koehler , Bernhard Johannes Brendel , Holger Schmitt , Rolf Dieter Bippus
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/005 , G06T11/008 , G06T2211/424
摘要： The invention relates to a forward projection apparatus for performing a forward projection through an image (22), wherein at least one of a number of rays (20, 21) for performing the forward projection, a ray spacing between the rays and a kernel width of an interpolation kernel for calculating interpolated values located on the rays is varied depending on the ray width relative to an effective image element spacing between image elements (24) of the image. This allows reducing artifacts in simulated projection data and, thus, in an image, which is iteratively reconstructed by using the simulated projection data. For example, if the number of provided rays and/or the ray spacing between the provided rays is varied, aliasing artifacts can be reduced. Moreover, if the ray spacing between the provided rays and/or the kernel width of the interpolation kernel is varied, artifacts caused by varying effective kernel widths may be reduced.
摘要翻译：本发明涉及一种用于通过图像（22）进行向前投影的前投影装置，其中，用于执行向前投影的多个光线（20,21）中的至少一个，光线之间的光线间隔和核宽度用于计算位于光线上的内插值的插值内核根据相对于图像的图像元素（24）之间的有效图像元素间隔的光线宽度而变化。这允许减少模拟投影数据中的伪影，并因此减少通过使用模拟投影数据迭代重建的图像。例如，如果提供的光线的数量和/或所提供的光线之间的光线间隔变化，则可以减少混叠伪影。此外，如果所提供的光线之间的光线间距和/或内插核的内核宽度发生变化，则可能会降低由变化的有效内核宽度引起的伪影。

73. 发明授权

US08873823B2 Motion compensation with tissue density retention 有权
标题翻译：运动补偿与组织密度保留
公开(公告)号：US08873823B2
公开(公告)日：2014-10-28
申请号：US13510153
申请日：2010-11-18
申请人： Thomas Koehler , Tobias Klinder , Sven Kabus
发明人： Thomas Koehler , Tobias Klinder , Sven Kabus
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/008 , G06T2211/412
摘要： A method includes reconstructing the projection data based on a reconstruction algorithm that compensates for both motion and tissue density changes of the moving organ across different motion phases, thereby generating motion and density compensated image data. A data compensator includes a reconstructor that reconstructs motion compensated image data based on an reconstruction algorithm that compensates for tissue density changes in a moving object.
摘要翻译：一种方法包括基于补偿运动器官在不同运动相位上的运动和组织密度变化的重建算法重建投影数据，从而产生运动和密度补偿图像数据。数据补偿器包括重建器，其基于补偿移动物体中的组织密度变化的重建算法重建运动补偿图像数据。

74. 发明申请

US20140295287A1 LITHIUM ION-CONDUCTING GARNET-LIKE COMPOUNDS 有权
标题翻译：锂离子导电GARNET-LIKE化合物
公开(公告)号：US20140295287A1
公开(公告)日：2014-10-02
申请号：US14233940
申请日：2012-05-21
申请人： Ulrich Eisele , Thomas Koehler , Stefan Hinderberger , Boris Kozinsky , Alan Logeat
发明人： Ulrich Eisele , Thomas Koehler , Stefan Hinderberger , Boris Kozinsky , Alan Logeat
IPC分类号： H01M10/0562 , H01M10/052
CPC分类号： H01M10/0562 , C01G25/006 , C01G33/006 , C01G35/006 , C04B35/481 , C04B35/486 , C04B35/495 , C04B35/62675 , C04B2235/3203 , C04B2235/3213 , C04B2235/322 , C04B2235/3227 , C04B2235/3244 , C04B2235/3251 , C04B2235/3418 , C04B2235/6562 , C04B2235/764 , H01M10/052 , H01M2300/0071
摘要： A lithium ion-conducting compound, having a garnet-like crystal structure, and having the general formula: Lin[A(3-a′-a″)A′(a′)A″(a″)][B(2-b′-b″)B′(b′)B″(b″)][C′(c′)C″(c″)]O12, where A, A′, A″ stand for a dodecahedral position of the crystal structure, where A stands for La, Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and/or Yb, A′ stands for Ca, Sr and/or Ba, A″ stands for Na and/or K, 0
摘要翻译：具有石榴石状晶体结构的锂离子导电化合物，具有以下通式：Lin [A（3-a'-a“）A'（a'）A”（a“）] [B（2 B'（b'）B“（b”）] [C'（c'）C“（c”）] O 12，其中A，A'，A“代表十二面体位置晶体结构，其中A代表La，Y，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm和/或Yb，A'代表Ca，Sr和/或Ba，A“ 代表Na和/或K，0

75. 发明申请

US20130315373A1 DIFFERENTIAL PHASE-CONTRAST IMAGING WITH FOCUSSING DEFLECTION STRUCTURE PLATES 审中-公开
标题翻译：具有聚焦偏转结构板的差分相位成像
公开(公告)号：US20130315373A1
公开(公告)日：2013-11-28
申请号：US13982781
申请日：2012-01-30
申请人： Ewald Rössl , Thomas Koehler
发明人： Ewald Rössl , Thomas Koehler
IPC分类号： G21K1/06 , G01N23/04
摘要： The present invention relates to X-ray differential phase-contrast imaging, in particular to a deflection device for X-ray differential phase-contrast imaging. In order to provide differential phase-contrast imaging with improved dose efficiency, a deflection device (28) for X-ray differential phase-contrast imaging is provided, comprising a deflection structure (41) with a first plurality (44) of first areas (46), and a second plurality (48) of second areas (50). The first areas are provided to change the phase and/or amplitude of an X-ray radiation; and wherein the second areas are X-ray transparent. The first and second areas are arranged periodically such that, in the cross section, the deflection structure is provided with a profile arranged such that the second areas are provided in form of groove-like recesses (54) formed between first areas provided as projections (56). The adjacent projections form respective side surfaces (58) partly enclosing the respective recess arranged in between. The side surfaces of each recess have a varying distance (60) across the depth (62) of the recess.
摘要翻译：本发明涉及X射线差分相位对比成像，特别涉及用于X射线差分相位对比成像的偏转装置。为了提供具有改进的剂量效率的差分相位对比成像，提供了一种用于X射线差分相位对比成像的偏转装置（28），包括具有第一多个第一区域（44）的偏转结构（41） 46）和第二多个（48）第二区域（50）。提供第一区域以改变X射线辐射的相位和/或幅度; 并且其中所述第二区域是X射线透明的。第一和第二区域周期性地布置，使得在横截面中，偏转结构设置有轮廓，轮廓布置成使得第二区域以形成在作为突起的第一区域之间形成的凹槽状凹部（54） 56）。相邻的突起形成部分地围绕设置在其间的相应凹部的相应侧表面（58）。每个凹部的侧表面具有穿过凹部的深度（62）的变化的距离（60）。

76. 发明申请

US20130259191A1 POST-PATIENT DYNAMIC FILTER FOR COMPUTED TOMOGRAPHY (CT) 有权
标题翻译：用于计算机图像（CT）的患者动态过滤器
公开(公告)号：US20130259191A1
公开(公告)日：2013-10-03
申请号：US13992302
申请日：2011-12-02
申请人： Thomas Koehler , Holger Schmidt , Roland Proksa
发明人： Thomas Koehler , Holger Schmidt , Roland Proksa
IPC分类号： A61B6/00
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/06 , A61B6/4241 , A61B6/4291 , A61B6/488 , A61B6/544 , G21K1/10
摘要： An imaging system includes a radiation source (310) configured to rotate around an examination region about a z-axis and having a focal spot that emits a radiation beam that traverses the examination region. The system further includes a radiation sensitive detector array (314) with a plurality of detector pixels that detects radiation traversing the examination region and generates projection data indicative of the detected radiation. The system further includes a dynamic post-patient filter (316) including one or more filter segments (402, 802, 902, 1004, 1102). The filter is configured to selectively and dynamically move in front of the detector array between the detector array and the examination region and into and out of a path of the radiation beam illuminating the detector pixels during scanning an object or subject based on a shape of the object or subject, thereby filtering unattenuated radiation and radiation traversing a periphery of the object or subject.
摘要翻译：成像系统包括被配置为围绕z轴围绕检查区域旋转并具有发射穿过检查区域的辐射束的焦点的辐射源（310）。该系统还包括具有多个检测器像素的辐射敏感检测器阵列（314），其检测穿过检查区域的辐射，并产生指示检测到的辐射的投影数据。该系统还包括动态的患者后过滤器（316），其包括一个或多个过滤器段（402,802,902,1004,1102）。滤波器被配置为在检测器阵列和检查区域之间选择性地和动态地在检测器阵列之前移动，并且在扫描对象或被摄体期间，在扫描对象或被摄体期间进入和离开照射检测器像素的辐射束的路径，物体或物体，从而过滤未被衰减的辐射和穿过物体或物体的周边的辐射。

77. 发明申请

US20130202166A1 APPARATUS AND METHOD FOR HYBRID RECONSTRUCTION OF AN OBJECT FROM PROJECTION DATA 有权
标题翻译：投影数据混合重构对象的装置和方法
公开(公告)号：US20130202166A1
公开(公告)日：2013-08-08
申请号：US13879655
申请日：2011-10-17
申请人： Thomas Koehler , Axel Thran
发明人： Thomas Koehler , Axel Thran
IPC分类号： G06T5/00
CPC分类号： G06T5/001 , G06T11/006 , G06T2211/421 , G06T2211/424
摘要： The invention relates to an imaging apparatus for imaging an object of interest. An analytical reconstruction unit (12) analytically reconstructs an analytical image of the object from detection data, in particular, from projection data, and an iterative reconstruction unit (13) iteratively reconstructs an iterative image of the object from the detection data, wherein a combination unit (14) combines the analytical image and the iterative image for generating a combination image. An iterative image can comprises shading artifacts, which may be caused by preprocessing the detection data before performing the iterative reconstruction. An analytical image shows reduced shading artifacts, in particular, shows no shading artifacts at all. Thus, by combining the analytical image and the iterative image a combination image can be generated, in which the shading artifacts are reduced in comparison to an iterative image, thereby improving the quality of the reconstructed final image of the object of interest.
摘要翻译：本发明涉及一种用于对感兴趣对象进行成像的成像装置。分析重建单元（12）特别是从投影数据中分析地从检测数据重建对象的分析图像，迭代重建单元（13）从检测数据中迭代地重建对象的迭代图像，其中组合单元（14）组合分析图像和用于生成组合图像的迭代图像。迭代图像可以包括遮蔽伪像，这可能是由于在执行迭代重构之前对检测数据进行预处理而引起的。分析图像显示减少的着色伪像，特别是根本不显示阴影伪影。因此，通过组合分析图像和迭代图像，可以生成组合图像，其中与迭代图像相比减少了阴影伪像，从而提高了感兴趣对象的重建的最终图像的质量。

78. 发明授权

US08396274B2 Imaging system 有权
标题翻译：成像系统
公开(公告)号：US08396274B2
公开(公告)日：2013-03-12
申请号：US12438559
申请日：2007-08-28
申请人： Claas Bontus , Michael Grass , Thomas Koehler
发明人： Claas Bontus , Michael Grass , Thomas Koehler
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/027
摘要： The present invention relates to an imaging system for imaging a field of interest, in particular to a computed tomography system. The imaging system comprises an irradiation unit (2) which moves relative to a field of interest along a first trajectory (501) and along a second trajectory (503). While the irradiation unit (2) moves along the first trajectory (501), first detection data are acquired and, while the irradiation unit (2) moves along the second trajectory (503), second detection data are acquired. An intermediate image of the field of interest is reconstructed from at least the second detection data, and virtual detection data are determined by forward projection through the intermediate image. Finally, an image of the field of interest is reconstructed from the first detection data and the virtual detection data.
摘要翻译：本发明涉及用于对感兴趣的领域，特别是计算机断层摄影系统进行成像的成像系统。成像系统包括沿着第一轨迹（501）并沿第二轨迹（503）相对于感兴趣的场移动的照射单元（2）。当照射单元（2）沿着第一轨迹（501）移动时，获取第一检测数据，并且当照射单元（2）沿着第二轨迹（503）移动时，获取第二检测数据。至少从第二检测数据重建感兴趣区域的中间图像，并且通过中间图像的向前投影确定虚拟检测数据。最后，从第一检测数据和虚拟检测数据重建感兴趣区域的图像。

79. 发明申请

US20120294414A1 COMPUTED TOMOGRAPHY APPARATUS 有权
标题翻译：计算机摄影装置
公开(公告)号：US20120294414A1
公开(公告)日：2012-11-22
申请号：US13503870
申请日：2010-10-26
申请人： Thomas Koehler
发明人： Thomas Koehler
IPC分类号： A61B6/03 , G21K1/02
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4233 , A61B6/5264 , A61B6/542 , G06T11/006
摘要： The invention relates to a computed tomography apparatus comprising a radiation source (2) and a detector (6) for generating detection values depending on a conical radiation beam (4). A weight providing unit (12) provides, for combinations of voxels of an image and detection values, weights for weighting the detection values, and a beam shaper shapes the conical radiation beam (4) such that for at least a part of the detection values the inverse of the variance of a respective detection value is positively correlated with an average of the weights corresponding to the combinations of the voxels, which correspond to the respective detection value, and the respective detection value. This shaping of the conical radiation beam improves the signal-to-noise ratio of the weighted detection values.
摘要翻译：本发明涉及一种包括辐射源（2）和检测器（6）的计算机断层摄影装置，用于根据锥形辐射束（4）产生检测值。权重提供单元（12）为图像的体素和检测值的组合提供用于加权检测值的权重，并且束形成器使得锥形辐射束（4）成形，使得对于至少一部分检测值相应检测值的方差的逆与与对应于各个检测值的体素的组合对应的权重的平均值以及相应的检测值正相关。锥形辐射束的这种成形改善了加权检测值的信噪比。

80. 发明申请

US20120177274A1 SYSTEM AND METHOD FOR GENERATING AN IMAGE OF A REGION OF INTEREST 失效
标题翻译：用于生成兴趣区域的图像的系统和方法
公开(公告)号：US20120177274A1
公开(公告)日：2012-07-12
申请号：US13394819
申请日：2010-09-21
申请人： Thomas Koehler , Roland Proksa
发明人： Thomas Koehler , Roland Proksa
IPC分类号： G06K9/46
CPC分类号： G06T11/008 , G06T5/50 , G06T2211/421 , G06T2211/424
摘要： The invention relates to an image generation system for generating an image of a region of interest. The image generation system comprises a measured data providing unit for providing measured data of the region of interest, a reconstruction unit (12) for reconstructing a first and a second image of the region of interest from the measured data using a first and a second reconstruction method, a noise determination unit (13) for determining first and second noise values for first and second image elements of the first and second image, and an image element combining unit (14) for combining corresponding first and second image elements into combined image elements forming a combined image based on the first and second noise values. By combining corresponding image elements of two differently reconstructed images based on determined noise values, a combined image of a region of interest can be generated with an improved quality.
摘要翻译：本发明涉及一种用于产生感兴趣区域的图像的图像生成系统。图像生成系统包括测量数据提供单元，用于提供感兴趣区域的测量数据;重建单元（12），用于使用第一和第二重构从所测量的数据重构感兴趣区域的第一和第二图像方法，用于确定第一和第二图像的第一和第二图像元素的第一和第二噪声值的噪声确定单元（13）和用于将对应的第一和第二图像元素组合成组合图像元素的图像元素合成单元（14）基于第一和第二噪声值形成组合图像。通过基于确定的噪声值组合两个不同重建图像的相应图像元素，可以以改进的质量生成感兴趣区域的组合图像。

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