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131. 发明授权

US08131040B2 Artifact correction for motion artifacted images associated with the pulmonary cycle 有权
标题翻译：与肺循环相关的运动伪影图像的伪像校正
公开(公告)号：US08131040B2
公开(公告)日：2012-03-06
申请号：US12377915
申请日：2007-07-24
申请人： Thomas Koehler , Peter Koken
发明人： Thomas Koehler , Peter Koken
IPC分类号： G06K9/00
CPC分类号： A61B6/466 , A61B6/032 , A61B6/037 , A61B6/5235 , A61B6/541
摘要： A diagnostic imaging system (8) images a subject at a preselected phase point (46) which occurs in one or more successive pulmonary cycles. A breathing monitor (44) monitors a cyclic physiological parameter in the pulmonary cycle and generates a cyclic pulmonary phase indicative signal. A CT scanner (12) is disposed adjacent an examination region (28) to generate transmission radiation data. A data processor (60) reconstructs an attenuation map (96) from the transmission data by weighting the transmission radiation data such that each of the pulmonary phases contributes substantially equally to the attenuation map.
摘要翻译：诊断成像系统（8）在一个或多个连续肺循环中发生的预选相位点（46）对受试者进行成像。呼吸监测器（44）监测肺循环中的循环生理参数并产生循环肺动脉指示信号。 CT扫描器（12）邻近检查区域（28）设置以产生透射辐射数据。数据处理器（60）通过对发射辐射数据进行加权来重建来自发射数据的衰减图（96），使得每个肺相位基本上等于衰减图。

132. 发明申请

US20110311024A1 INTERFACE DEVICE, IMAGING SYSTEM AND METHOD FOR RIM-IMAGING 有权
标题翻译：界面装置，成像系统和RIM成像方法
公开(公告)号：US20110311024A1
公开(公告)日：2011-12-22
申请号：US13148323
申请日：2010-02-05
申请人： Thomas Koehler
发明人： Thomas Koehler
IPC分类号： A61B6/04 , G01T1/36
CPC分类号： A61B6/484 , A61B5/0091 , A61B6/0414 , A61B6/502 , A61B8/0825
摘要： The invention relates to imaging systems in which during imaging of an object a matching medium is used to match the object to its surroundings. An interface device is used for phase contrast rim-imaging of the object, which comprises a compartment in which a deformable matching material is contained which can be pushed to the side when the object to be imaged is compressed. Thus, a lateral field of view for X-ray phase contrast mammography may be increased.
摘要翻译：本发明涉及成像系统，其中在物体成像期间使用匹配介质来将物体与其周围环境相匹配。接口装置用于对象的相位对比边缘成像，其包括容纳可变形匹配材料的隔间，当被成像对象被压缩时，可以将其推向一侧。因此，可以增加用于X射线相位乳房X线照相术的横向视场。

133. 发明申请

US20110095197A1 IMAGING APPARATUS FOR GENERATING AN IMAGE OF A REGION OF INTEREST 有权
标题翻译：用于产生一个利益区域的图像的成像装置
公开(公告)号：US20110095197A1
公开(公告)日：2011-04-28
申请号：US12992285
申请日：2009-05-15
申请人： Peter Forthmann , Thomas Koehler , Holger Schmitt
发明人： Peter Forthmann , Thomas Koehler , Holger Schmitt
IPC分类号： A61B6/00 , G06K9/00
CPC分类号： A61B6/027 , A61B6/032 , A61B6/14 , A61B6/4085 , A61B6/5258 , G06T11/005 , G06T2211/421
摘要： The present invention relates to an imaging apparatus for generating an image of a region of interest. The imaging apparatus comprises a radiation source (2), a detection unit (6) for generating detection data and a moving unit (1, 7, 8) for moving the radiation source (2) and the region of interest relative to each other, while the detection data are generated. The imaging apparatus further comprises an identification unit (13) for identifying in the detection data high density detection data and non-high density detection data. A density weighting unit (14) density weights the detection data, wherein at least a part of the high density detection data has a smaller density weight than the non-high density detection data, and a reconstruction unit (15) reconstructs an image of the region of interest from the weighted detection data.
摘要翻译：本发明涉及一种用于产生感兴趣区域的图像的成像装置。成像装置包括辐射源（2），用于产生检测数据的检测单元（6）和用于使辐射源（2）和感兴趣区域相对于彼此移动的移动单元（1,7,8）同时生成检测数据。该成像装置还包括用于在检测数据中识别高密度检测数据和非高密度检测数据的识别单元（13）。密度加权单元（14）密度对检测数据进行加权，其中至少一部分高密度检测数据具有比非高密度检测数据更小的密度权重，并且重建单元（15）重建来自加权检测数据的感兴趣区域。

134. 发明申请

US20110064202A1 METHOD AND SYSTEM FOR GENERATING AN X-RAY BEAM 审中-公开
标题翻译：用于产生X射线光束的方法和系统
公开(公告)号：US20110064202A1
公开(公告)日：2011-03-17
申请号：US12992409
申请日：2009-05-08
申请人： Axel Thran , Peter Forthmann , Roland Proksa , Thomas Koehler
发明人： Axel Thran , Peter Forthmann , Roland Proksa , Thomas Koehler
IPC分类号： H01J35/08 , H01J35/00 , H01J35/06 , H01J35/30
CPC分类号： H01J35/10 , H01J35/30 , H01J2235/086 , H05G1/52 , H05G1/58
摘要： To scan an object with differently shaped cone beams (112, 122), the present invention provides a CT scanner with a moveable X-ray tube (the meaning of “move the x-ray tube among a plurality of predefined positions” also covers the situation that the anode disk is moved among a plurality of corresponding positions, while the shell of the x-ray tube does not move). The X-ray tube is not only moveable along the axial direction, but also along the radial direction of the CT scanner gantry. The scanner comprises an X-ray tube, which X-ray tube further comprises: an anode disk (100), comprising a plurality of focal tracks (110, 120) each focal track being cone-shaped with an anode angle (114, 124) different from the anode angle(s) of the other focal track(s); and a first cathode (210), configured to emanate an electron beam targeting at least one of the plurality of focal tracks. When different focal tracks are bombarded by electron beams, different X-ray beams (112, 122) with differently shaped cone beams are generated.
摘要翻译：为了扫描具有不同形状的锥形束（112,122）的物体，本发明提供具有可移动X射线管的CT扫描器（“在多个预定位置中移动x射线管”的含义也覆盖使得阳极盘在多个对应位置之间移动，而X射线管的外壳不移动的情况）。 X射线管不仅可以沿轴向移动，而且可沿CT扫描仪台架的径向方向移动。所述扫描器包括X射线管，所述X射线管还包括：阳极盘（100），包括多个焦点轨道（110,120），每个焦点轨道呈圆锥形，具有阳极角（114,124 ）不同于另一个焦点轨道的阳极角度; 以及第一阴极（210），被配置为发射靶向所述多个焦点轨道中的至少一个的电子束。当不同的焦点轨道被电子束轰击时，产生具有不同形状的锥形束的不同的X射线束（112,122）。

135. 发明申请

US20110038516A1 UNCERTAINTY MAPS FOR SEGMENTATION IN THE PRESENCE OF METAL ARTIFACTS 有权
标题翻译：不确定性在金属制品存在下分配
公开(公告)号：US20110038516A1
公开(公告)日：2011-02-17
申请号：US12673779
申请日：2008-08-12
申请人： Thomas Koehler , Holger Schmitt , Heinrich Schulz
发明人： Thomas Koehler , Holger Schmitt , Heinrich Schulz
IPC分类号： G06K9/00
CPC分类号： A61B6/5258 , G06T7/11 , G06T7/149 , G06T2207/10081 , G06T2207/20012 , G06T2207/30052
摘要： When performing model-based segmentation on a 3D patient image (80), metal artifacts in the patient image (80), caused by metal in the patient's body, are detected, and a metal artifact reduction technique is performed to reduce the artifact(s) by interpolation projection data in the region of the artifact(s). The interpolated data is used to generate an uncertainty map for artifact-affected voxels in the image, and a mesh model (78) is conformed to the image to facilitate segmentation thereof. Internal and external energies applied to push and pull the model (78) are weighted as a function of the uncertainty associated with one or more voxels in the image (80). Iteratively, mathematical representations of the energies and respective weights are solved to describe an updated model shape that more closely aligns to the image (80).
摘要翻译：当在3D患者图像（80）上执行基于模型的分割时，检测由患者身体中的金属引起的患者图像（80）中的金属伪像，并且执行金属伪像减少技术以减少伪像）通过伪像区域内的插值投影数据。内插数据用于为图像中的假象影响的像素生成不确定性图，并且网格模型（78）符合图像以便于其分割。作为与图像（80）中的一个或多个体素相关联的不确定度的函数，加权用于推动和拉动模型（78）的内部和外部能量。迭代地，解决能量和相应权重的数学表示以描述与图像更接近地对准的更新的模型形状（80）。

136. 发明申请

US20100296624A1 HIGH-FREQUENCY SADDLE-TRAJECTORY FOR AXIAL CARDIAC CT 审中-公开
标题翻译：用于轴向心脏CT的高频脊索
公开(公告)号：US20100296624A1
公开(公告)日：2010-11-25
申请号：US12445765
申请日：2007-10-16
申请人： Claas Bontus , Roland Proksa , Thomas Koehler
发明人： Claas Bontus , Roland Proksa , Thomas Koehler
IPC分类号： A61B6/03
CPC分类号： A61B6/503 , A61B6/027 , A61B6/032 , A61B6/4021 , A61B6/4085 , A61B6/541
摘要： If, in cardiac CT, the time window becomes shorter than the time required for a complete rotation of the gantry, the volume that can be reconstructed becomes small due to the non-existence of related pi-lines. According to an exemplary embodiment of the present invention, an examination apparatus is provided which generates a radiation beam oscillating in z-direction with an oscillation frequency higher than the rotational frequency of the source. This may provide for an exact image reconstruction of large volumes.
摘要翻译：如果在心脏CT中，时间窗口变得比台架完全旋转所需的时间短，则由于不存在相关的pi线，可重构的体积变小。根据本发明的示例性实施例，提供了一种检查装置，其产生以比源的旋转频率高的振荡频率在z方向上振荡的辐射束。这可以提供大体积的精确图像重建。

137. 发明申请

US20100239134A1 ARTIFACT CORRECTION FOR MOTION ARTIFACTED IMAGES 有权
标题翻译：运动矫正图像的文艺校正
公开(公告)号：US20100239134A1
公开(公告)日：2010-09-23
申请号：US12377915
申请日：2007-07-24
申请人： Thomas Koehler , Peter Koken
发明人： Thomas Koehler , Peter Koken
IPC分类号： G06K9/00
CPC分类号： A61B6/466 , A61B6/032 , A61B6/037 , A61B6/5235 , A61B6/541
摘要： A diagnostic imaging system (8) images a subject at a preselected phase point (46) which occurs in one or more successive pulmonary cycles. A breathing monitor (44) monitors a cyclic physiological parameter in the pulmonary cycle and generates a cyclic pulmonary phase indicative signal. A CT scanner (12) is disposed adjacent an examination region (28) to generate transmission radiation data. A data processor (60) reconstructs an attenuation map (96) from the transmission data by weighting the transmission radiation data such that each of the pulmonary phases contributes substantially equally to the attenuation map.
摘要翻译：诊断成像系统（8）在一个或多个连续肺循环中发生的预选相位点（46）对受试者进行成像。呼吸监测器（44）监测肺循环中的循环生理参数并产生循环肺动脉指示信号。 CT扫描器（12）邻近检查区域（28）设置以产生透射辐射数据。数据处理器（60）通过对发射辐射数据进行加权来重建来自发射数据的衰减图（96），使得每个肺相位基本上等于衰减图。

138. 发明申请

US20100189331A1 APPARATUS FOR DETERMINING A HIGH DENSITY REGION IN AN IMAGE 审中-公开
标题翻译：用于确定图像中高密度区域的装置
公开(公告)号：US20100189331A1
公开(公告)日：2010-07-29
申请号：US12664662
申请日：2008-06-11
申请人： Peter Forthmann , Thomas Koehler , Holger Schmitt
发明人： Peter Forthmann , Thomas Koehler , Holger Schmitt
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , A61B6/5258
摘要： The invention relates to an apparatus for determining a high density region in an image, wherein the apparatus comprises a provision unit (1, 2, 6, 7, 8) for providing projection data for reconstructing the image. The apparatus comprises further a high density shadow determination unit (12) for determining a high density shadow in the projection data and a backprojection unit (13) for backprojecting the determined high density shadow resulting in a high density image showing the high density region. The inventions relates further to a corresponding method and computer program for determining a high density region in an image.
摘要翻译：本发明涉及一种用于确定图像中的高密度区域的装置，其中该装置包括用于提供用于重构图像的投影数据的提供单元（1,2,6,7,8）。该装置还包括用于确定投影数据中的高密度阴影的高密度阴影确定单元（12）和用于反向投影确定的高密度阴影的反投影单元（13），导致显示高密度区域的高密度图像。本发明进一步涉及用于确定图像中的高密度区域的相应方法和计算机程序。

139. 发明申请

US20090268863A1 RECONSTRUCTION METHOD FOR HELICAL CONE-BEAM CT 失效
标题翻译：螺旋CT梁的重建方法
公开(公告)号：US20090268863A1
公开(公告)日：2009-10-29
申请号：US11913821
申请日：2006-05-03
申请人： Thomas Koehler , Claas Bontus , Peter Koken
发明人： Thomas Koehler , Claas Bontus , Peter Koken
IPC分类号： H05G1/60 , G06K9/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421
摘要： The invention relates to a method and a system for the reconstruction of an object function (f(x)) based on projections acquired during the motion of a radiation source on a helical trajectory (17). The method is particularly suited for an n-PI+ acquisition which by definition completely comprises an n-PI and additionally some overscan data from the (n+2)−PI window. According to the method, two sets (Σ≧m, Σ≧m) of filtered projections are generated from the measuring values and separately back-projected to yield two absorption functions. The first absorption function (flf(x)) is based on contributions of Radon-planes with at most m intersections with the source trajectory (17), while the second absorption function (fhf(x)) is based on Radon-planes with more than m intersections with the source trajectory (17). The two absorption functions are added to yield the final absorption function (f(x)) of an object in the examination zone. In an approximative version of the method, the sets (Σ≧m, Σ≧m) of filtered projections are first added and then back-projected.
摘要翻译：本发明涉及一种用于基于在螺旋轨迹（17）上的辐射源的运动期间获取的投影来重建对象函数（f（x））的方法和系统。该方法特别适用于n-PI +采集，其通过定义完全包括n-PI，并且另外还包括来自（n + 2）-PI窗口的一些过扫描数据。根据该方法，从测量值产生经滤波的投影的两组（Sigma> = m，Sigma> = m），并单独反投影以产生两个吸收函数。第一吸收函数（flf（x））基于与源轨迹（17）最多m个交点的氡面的贡献，而第二吸收函数（fhf（x））基于具有更多的氡面而不是与源轨迹（17）的交点。添加两个吸收函数以产生检查区中物体的最终吸收函数（f（x））。在该方法的近似版本中，首先添加滤波投影的集合（Sigma> = m，Sigma> = m），然后反投影。

140. 发明申请

US20090110189A1 Apparatus and method for operating a symmetric cipher engine in cipher-block chaining mode 失效
标题翻译：用于在密码块链接模式下操作对称密码引擎的装置和方法
公开(公告)号：US20090110189A1
公开(公告)日：2009-04-30
申请号：US12257439
申请日：2008-10-24
申请人： Ulrich Mayer , Thomas Koehler , Bernd Nerz
发明人： Ulrich Mayer , Thomas Koehler , Bernd Nerz
IPC分类号： H04L9/06
CPC分类号： H04L9/0637 , H04L2209/12
摘要： An apparatus is disclosed for operating a symmetric cipher engine (SCE) in cipher-block chaining (CBC) mode, the apparatus comprises a crypto operation hardware comprising said SCE, an XOR stage, an apparatus for storing a chaining value comprising a state register of said SCE, an input latch supplying said crypto operation hardware with data, and an output latch. The data may be reordered for decipher operations. Furthermore, a method is disclosed for operating a SCE in CBC mode, wherein the method involves a crypto operation hardware that comprises said SCE and an XOR stage supplied with data. The method may also comprise using a state register of said SCE to apply a chaining value. Said method may comprise reordering data supplied to said crypto operation hardware for decipher operations.
摘要翻译：公开了一种用于在密码块链接（CBC）模式下操作对称密码引擎（SCE）的装置，该装置包括包含所述SCE的加密操作硬件，XOR级，用于存储链接值的装置，包括状态寄存器所述SCE，向所述加密操作硬件提供数据的输入锁存器和输出锁存器。数据可以被重新排序用于解密操作。此外，公开了一种用于以CBC模式操作SCE的方法，其中所述方法涉及包括所述SCE和提供有数据的XOR级的密码操作硬件。该方法还可以包括使用所述SCE的状态寄存器来应用链接值。所述方法可以包括将提供给所述密码操作硬件的数据重新排序以进行解密操作。

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