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111. 发明申请

US20130329851A1 DETECTION APPARATUS 有权
标题翻译：检测装置
公开(公告)号：US20130329851A1
公开(公告)日：2013-12-12
申请号：US14000414
申请日：2012-02-20
申请人： Ewald Rossl , Thomas Koehler , Roland Proksa
发明人： Ewald Rossl , Thomas Koehler , Roland Proksa
IPC分类号： G21K1/00
CPC分类号： G21K1/00 , A61B6/027 , A61B6/032 , A61B6/4035 , A61B6/4078 , A61B6/4233 , A61B6/482
摘要： The invention relates to a detection apparatus comprising a filter (20) for filtering a conical radiation beam (4) such that at least a first region (22) and a second region (23) of the radiation beam are generated having different energy spectra, wherein the first region of the radiation beam illuminates a first detector area (25) on a detection surface (21) of a detector, thereby generating a first set of detection values, and the second region of the radiation beam illuminates a second detector area (26) on the detection surface, thereby generating a second set of detection values. For example, by using the filter the detection apparatus can be used as dual-energy computed tomography apparatus, wherein, for instance, a standard computed tomography apparatus can be transformed to a dual-energy computed tomography apparatus by adding the filter to the standard computed tomography apparatus, preferentially without modifying the radiation source and the detector.
摘要翻译：本发明涉及一种检测装置，其包括用于过滤锥形辐射束（4）的过滤器（20），使得产生具有不同能谱的辐射束的至少第一区域（22）和第二区域（23）其中辐射束的第一区域照射检测器的检测表面（21）上的第一检测器区域（25），从而产生第一组检测值，并且辐射束的第二区域照亮第二检测器区域 26），从而产生第二组检测值。例如，通过使用滤波器，检测装置可以用作双能计算机断层摄影装置，其中，例如，标准计算机断层摄影装置可以通过将滤波器加到标准计算机断层摄影装置优选不改变辐射源和检测器的断层摄影装置。

112. 发明申请

US20130308751A1 DIFFERENTIAL PHASE-CONTRAST IMAGING WITH INCREASED DYNAMIC RANGE 有权
标题翻译：具有增加的动态范围的差分相位对比成像
公开(公告)号：US20130308751A1
公开(公告)日：2013-11-21
申请号：US13983063
申请日：2012-02-02
申请人： Thomas Koehler , Ewald Rössl
发明人： Thomas Koehler , Ewald Rössl
IPC分类号： G21K1/06
CPC分类号： G21K1/067 , A61B6/0407 , A61B6/4035 , A61B6/4078 , A61B6/4291 , A61B6/4441 , A61B6/484 , A61B6/508 , G21K1/06 , G21K2201/067 , G21K2207/005
摘要： The present invention relates to X-ray differential phase-contrast imaging. In order to enhance the information acquired by phase-contrast imaging, an analyzer grating (34) for X-ray differential phase-contrast imaging is provided with an absorption structure (48). The latter comprises a first plurality (50) of first areas (52) with a first X-ray attenuation, and a second plurality (54) of second areas (56) with a second X-ray attenuation. The second X-ray attenuation is smaller than the first X-ray attenuation, and the first and second areas are arranged periodically in an alternating manner. A third plurality (58) of third areas (60) is provided with a third X-ray attenuation, which lies in a range from the second X-ray attenuation to the first X-ray attenuation, wherein every second of the first or second areas is replaced by one of the third areas.
摘要翻译：本发明涉及X射线差分相位成像。为了增强通过相位对比成像获得的信息，用于X射线差分相位对比成像的分析器光栅（34）具有吸收结构（48）。后者包括具有第一X射线衰减的第一多个（50）第一区域（52）和具有第二X射线衰减的第二多个（54）第二区域（56）。第二X射线衰减小于第一X射线衰减，并且第一和第二区域以交替方式周期性地布置。第三多个（58）的第三区域（60）设置有第三X射线衰减，其位于从第二X射线衰减到第一X射线衰减的范围内，其中第一或第二地区被第三个地区之一所取代。

113. 发明授权

US08582855B2 Apparatus, method and computer program for producing a corrected image of a region of interest from acquired projection data 失效
标题翻译：用于从所获取的投影数据产生感兴趣区域的校正图像的装置，方法和计算机程序
公开(公告)号：US08582855B2
公开(公告)日：2013-11-12
申请号：US12521599
申请日：2007-12-19
申请人： Thomas Koehler
发明人： Thomas Koehler
IPC分类号： G06K9/00 , G06F9/40
CPC分类号： G06T11/005 , A61B6/5258
摘要： The present invention relates to an apparatus for producing a corrected image of a region of interest from acquired projection data (60), wherein an uncorrected intermediate image (74) is reconstructed. The uncorrected intermediate image (74) is corrected and image elements of the corrected intermediate image (85) are classified. Image elements of the corrected 5 intermediate image (85) that are of a high density or low density class are replaced by image elements having values depending on values of the low density class to generate a synthetic image (90). Synthetic projection data (96) are generated by forward projecting the synthetic image (90), and acquired projection data contributing to the high density class are replaced by corresponding synthetic projection data (96) to generate corrected projection data (112). 10 The corrected projection data (112) are used for reconstructing the corrected image.
摘要翻译：本发明涉及一种用于从所获取的投影数据（60）产生感兴趣区域的校正图像的装置，其中重建未校正的中间图像（74）。对未校正的中间图像（74）进行校正，校正的中间图像（85）的图像元素被分类。具有高密度或低密度等级的校正的5中间图像（85）的图像元素由具有取决于低密度等级的值的值的图像元素代替以产生合成图像（90）。合成投影数据（96）通过前向投影合成图像（90）产生，并且由相应的合成投影数据（96）代替有助于高密度等级的获取的投影数据以产生校正投影数据（112）。校正投影数据（112）用于重建校正图像。

114. 发明授权

US08526757B2 Imaging system and imaging method for imaging a region of interest 有权
标题翻译：用于成像感兴趣区域的成像系统和成像方法
公开(公告)号：US08526757B2
公开(公告)日：2013-09-03
申请号：US12600062
申请日：2008-05-13
申请人： Thomas Koehler , Peter Forthmann
发明人： Thomas Koehler , Peter Forthmann
IPC分类号： G06K9/40
CPC分类号： G06T11/006 , G06T2211/424
摘要： The invention relates to an imaging system for imaging a region of interest, in particular to a computed tomography system. First data for generating an image of the region of interest are provided, which are used by a reconstruction unit (12) for reconstructing an image of the region of interest using an adaptable artefact correction method. Second data are provided by simulating the providing of the first data using the reconstructed image of the region of interest by a second data providing unit (13). A deviation determination unit (14) determines a deviation between the first and second data. An adaptation unit (15) adapts the artefact correction method such that the deviation between the first and second data is reduced and the reconstruction unit (12) reconstructs an image of the region of interest from first the data using the adapted artefact correction method.
摘要翻译：本发明涉及用于对感兴趣的区域，特别是计算机断层摄影系统进行成像的成像系统。提供了用于生成感兴趣区域的图像的第一数据，其被重建单元（12）用于使用适应性伪影校正方法重建感兴趣区域的图像。通过由第二数据提供单元（13）模拟使用感兴趣区域的重建图像来提供第一数据来提供第二数据。偏差确定单元（14）确定第一和第二数据之间的偏差。适应单元（15）适应伪影校正方法，使得第一和第二数据之间的偏差减小，并且重建单元（12）使用适应的人工制品校正方法从第一数据重建感兴趣区域的图像。

115. 发明授权

US08410448B2 Imaging apparatus for generating an image of a region of interest 有权
标题翻译：用于产生感兴趣区域的图像的成像装置
公开(公告)号：US08410448B2
公开(公告)日：2013-04-02
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： G01T1/16
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。

116. 发明申请

US20120243658A1 PHASE CONTRAST IMAGING 有权
标题翻译：相位对比成像
公开(公告)号：US20120243658A1
公开(公告)日：2012-09-27
申请号：US13514682
申请日：2010-12-03
申请人： Dieter Geller , Klaus Juergen Engel , Gereon Vogtmeier , Thomas Koehler , Ewald Roessl
发明人： Dieter Geller , Klaus Juergen Engel , Gereon Vogtmeier , Thomas Koehler , Ewald Roessl
IPC分类号： G01N23/04
CPC分类号： A61B6/00 , A61B6/4291 , A61B6/4441 , A61B6/484
摘要： X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV, this invention suggests to combine a traditional absorption X-ray-imaging system with large-FOV with an insertable low-cost PCI system with small-FOV, The invention supports the user to direct the PCI system with reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-ray dose exposure for scanning regions not interesting for a radiologist. The PCI scan may be generated on the basis of local tomography.
摘要翻译：用于相位对比成像（PCI）的X射线装置通常在光栅的帮助下构建。对于大视野（FOV）来说，这些光栅的生产成本和复杂性可能会因为需要聚焦几何而显着增加。本发明不是采用具有大FOV的纯PCI，而是将传统的吸收X射线成像系统与大型FOV结合，并具有小FOV的可插入低成本PCI系统。本发明支持用户指导PCI 系统将FOV降低到他认为对于执行PCI扫描最有趣的区域，从而消除了用于放射科医生不感兴趣的扫描区域的X射线剂量曝光。可以基于局部断层摄影产生PCI扫描。

117. 发明申请

US20120236992A1 SCANNING SYSTEM FOR DIFFERENTIAL PHASE CONTRAST IMAGING 有权
标题翻译：扫描系统进行差分相位成像
公开(公告)号：US20120236992A1
公开(公告)日：2012-09-20
申请号：US13514312
申请日：2010-12-08
申请人： Klaus Juergen Engel , Dieter Geller , Gereon Vogtmeier , Thomas Koehler
发明人： Klaus Juergen Engel , Dieter Geller , Gereon Vogtmeier , Thomas Koehler
IPC分类号： G01N23/04 , B82Y99/00
CPC分类号： A61B6/00 , A61B6/032 , A61B6/4291 , A61B6/484 , A61B6/488 , A61B6/5241
摘要： The invention relates to the field of X-ray differential phase contrast imaging. For scanning large objects and for an improved contrast to noise ration, an X-ray device (10) for imaging an object (18) is provided. The X-ray device (10) comprises an X-ray emitter arrangement (12) and an X-ray detector arrangement (14), wherein the X-ray emitter arrangement (14) is adapted to emit an X-ray beam (16) through the object (18) onto the X-ray detector arrangement (14). The X-ray beam (16) is at least partial spatial coherent and fan-shaped. The X-ray detector arrangement (14) comprises a phase grating (50) and an absorber grating (52). The X-ray detector arrangement (14) comprises an area detector (54) for detecting X-rays, wherein the X-ray device is adapted to generate image data from the detected X-rays and to extract phase information from the X-ray image data, the phase information relating to a phase shift of X-rays caused by the object (18). The object (18) has a region of interest (32) which is larger than a detection area of the X-ray detector (18) and the X-ray device (10) is adapted to generate image data of the region of interest (32) by moving the object (18) and the X-ray detector arrangement (14) relative to each other.
摘要翻译：本发明涉及X射线差分相位成像领域。为了扫描大型物体并改善与噪音比较的对比度，提供了用于对物体（18）成像的X射线装置（10）。 X射线装置（10）包括X射线发射器装置（12）和X射线检测器装置（14），其中X射线发射器装置（14）适于发射X射线束（16））通过物体（18）到X射线检测器装置（14）上。 X射线束（16）至少部分空间相干和扇形。 X射线检测器装置（14）包括相位光栅（50）和吸收光栅（52）。 X射线检测器装置（14）包括用于检测X射线的区域检测器（54），其中X射线装置适于从检测到的X射线产生图像数据，并从X射线图像数据，与由对象（18）引起的X射线的相移相关的相位信息。物体（18）具有大于X射线检测器（18）的检测区域的感兴趣区域（32），并且X射线装置（10）适于产生感兴趣区域的图像数据（ 32）通过相对于彼此移动物体（18）和X射线检测器装置（14）。

118. 发明申请

US20120148136A1 APPARATUS AND METHOD FOR PROCESSING PROJECTION DATA 失效
标题翻译：用于处理投影数据的装置和方法
公开(公告)号：US20120148136A1
公开(公告)日：2012-06-14
申请号：US13390525
申请日：2010-09-01
申请人： Tim Nielsen , Thomas Koehler , Bernhard Brendel
发明人： Tim Nielsen , Thomas Koehler , Bernhard Brendel
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , A61B6/5258 , G06T2211/412
摘要： The invention relates to a projection values processing apparatus (1) for processing acquired projection values. A first image is reconstructed from acquired projection values under consideration of a reconstruction assumption by a reconstruction unit (13). A simulated projection values determining unit (14) determines simulated projection values by simulating a projection through the reconstructed first image under consideration of the reconstruction assumption, and inconsistency values are determined for the acquired projection values by an inconsistency determining unit (15), wherein an inconsistency value is indicative of a degree of inconsistency of a respective acquired projection value with the reconstruction assumption, by comparing the acquired projection values and the simulated projection values. The inconsistency values can be used for different purposes, for example, improving the quality of a reconstructed image or indicating image elements being affected by an inconsistency between reconstruction assumption and acquired projection values.
摘要翻译：本发明涉及一种用于处理所获取的投影值的投影值处理装置（1）。在由重建单元（13）考虑重建假设的情况下，从获取的投影值重建第一图像。模拟投影值确定单元（14）通过在考虑重构假设的情况下模拟通过重构的第一图像的投影来确定模拟投影值，并且通过不一致性确定单元（15）为所获取的投影值确定不一致值，其中，通过比较所获取的投影值和模拟投影值，不一致值表示相应的获得的投影值与重建假设的不一致程度。不一致值可以用于不同的目的，例如，改善重建图像的质量或指示图像元素受到重建假设和所获取的投影值之间的不一致的影响。

119. 发明授权

US08135960B2 Multiprocessor electronic circuit including a plurality of processors and electronic data processing system 有权
标题翻译：多处理器电子电路包括多个处理器和电子数据处理系统
公开(公告)号：US08135960B2
公开(公告)日：2012-03-13
申请号：US12248549
申请日：2008-10-09
申请人： Thomas Koehler , Thomas Fuchs , Ulrich Mayer , Chung-Lung Kevin Shum , Scott Barnett Swaney
发明人： Thomas Koehler , Thomas Fuchs , Ulrich Mayer , Chung-Lung Kevin Shum , Scott Barnett Swaney
IPC分类号： G06F12/14
CPC分类号： G06F21/72
摘要： A multiprocessor electronic circuit and an electronic data processing system comprising such circuit are disclosed for reducing the power consumption and the chip area consumption of a multiprocessor system having cryptographic functionality. In one embodiment, the multiprocessor electronic circuit comprises a plurality of processors, a single cryptographic processing unit that comprises a plurality of input/output buffer pairs and two cryptographic engines, a cipher engine and a hash engine, and associated control logic.
摘要翻译：公开了一种包括这种电路的多处理器电子电路和电子数据处理系统，用于降低具有加密功能的多处理器系统的功耗和芯片面积消耗。在一个实施例中，多处理器电子电路包括多个处理器，包括多个输入/输出缓冲器对和两个加密引擎，密码引擎和哈希引擎以及相关控制逻辑的单个密码处理单元。

120. 发明申请

US20120057676A1 GRATING FOR PHASE-CONTRAST IMAGING 有权
标题翻译：用于相位对比成像的图像
公开(公告)号：US20120057676A1
公开(公告)日：2012-03-08
申请号：US13266692
申请日：2010-05-17
申请人： Thomas Koehler , Ewald Roessl
发明人： Thomas Koehler , Ewald Roessl
IPC分类号： G21K1/06
CPC分类号： G21K1/06 , G21K2207/005
摘要： The invention relates to gratings for X-ray differential phase-contrast imaging, a focus detector arrangement and X-ray system for generating phase-contrast images of an object and a method of phase-contrast imaging for examining an object of interest. In order to provide gratings with a high aspect ratio but low costs, a grating for X-ray differential phase-contrast imaging is proposed, comprising a first sub-grating (112), and at least a second sub- grating (114; 116; 118), wherein the sub-gratings each comprise a body structure (120) with bars (122) and gaps (124) being arranged periodically with a pitch (a), wherein the sub-gratings (112; 114; 116; 118) are arranged consecutively in the direction of the X-ray beam, and wherein the sub-gratings (112; 114; 116; 118) are positioned displaced to each other perpendicularly to the X-ray beam.
摘要翻译：本发明涉及用于X射线差分相位对比成像的光栅，用于产生对象的相位对比图像的焦点检测器布置和X射线系统以及用于检查感兴趣对象的相位对比成像方法。为了提供具有高纵横比但成本较低的光栅，提出了一种用于X射线差分相位对比成像的光栅，包括第一子光栅（112）和至少第二子光栅（114; 116 ; 118），其中所述子光栅各自包括具有杆（122）和间隙（124）的主体结构（120），所述杆具有间距（a）周期性地布置，其中所述子光栅（112; 114; 116; 118 ）沿X射线束的方向连续布置，并且其中子光栅（112; 114; 116; 118）被定位成垂直于X射线束彼此位移。

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