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61. 发明申请

WO2008047279A1 IMAGING SYSTEM, IMAGING METHOD AND COMPUTER PROGRAM FOR IMAGING A REGION OF INTEREST 审中-公开
标题翻译：成像系统，成像方法和计算机程序，用于成像一个利益区域
公开(公告)号：WO2008047279A1
公开(公告)日：2008-04-24
申请号：PCT/IB2007/054153
申请日：2007-10-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , PROKSA, Roland
发明人： KOEHLER, Thomas , PROKSA, Roland
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , G06T2211/421
摘要： The present invention relates to an imaging system for imaging a region of interest comprising an illumination unit and a detection unit. The imaging system further comprises a grouping unit for grouping the detection values, wherein each group comprises at least one alpha detection value and at least one beta detection value (103). At least one alpha aperture weighting value for the at least one alpha detection value of a group is determined by using at least one position of at least one ray within the aperture (104). Furthermore, at least one beta aperture weighting value for the at least one beta detection value of a group is approximately determined using the at least one alpha aperture weighting value of the group (105). The detection values are than aperture weighted using aperture weighting values (106). The region of interest is reconstructed by backprojecting the weighted detection values (107).
摘要翻译：本发明涉及一种用于对包括照明单元和检测单元的感兴趣区域成像的成像系统。成像系统还包括用于对检测值进行分组的分组单元，其中每组包括至少一个α检测值和至少一个β检测值（103）。通过使用孔径（104）内的至少一个射线的至少一个位置来确定组的至少一个α检测值的至少一个α孔径权重值。此外，使用组（105）的至少一个阿尔法孔径权重值近似确定组的至少一个β检测值的至少一个β孔径加权值。检测值比使用孔径加权值的孔径加权（106）。通过反投影加权检测值来重建感兴趣区域（107）。

62. 发明申请

WO2012077027A1 POST-PATIENT DYNAMIC FILTER FOR COMPUTED TOMOGRAPHY (CT) 审中-公开
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：WO2012077027A1
公开(公告)日：2012-06-14
申请号：PCT/IB2011/055435
申请日：2011-12-02
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , SCHMITT, Holger , PROKSA, Roland
发明人： KOEHLER, Thomas , PROKSA, Roland
IPC分类号： A61B6/03 , A61B6/06 , G01N23/04 , G21K1/10
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。

63. 发明申请

WO2012077014A1 METHOD OF PROVIDING A DISPLAYABLE PIXEL DATA SET FROM MEASUREMENT DATA PROVIDED BY A DIFFERENTIAL PHASE CONTRAST X-RAY IMAGING SYSTEM 审中-公开
标题翻译：通过差分相位X射线成像系统提供的测量数据提供可显示像素数据的方法
公开(公告)号：WO2012077014A1
公开(公告)日：2012-06-14
申请号：PCT/IB2011/055305
申请日：2011-11-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , WIEMKER, Rafael , CARLSEN, Ingwer-Curt , RÖSSL, Ewald , MARTENS, Gerhard , KOEHLER, Thomas
发明人： WIEMKER, Rafael , CARLSEN, Ingwer-Curt , RÖSSL, Ewald , MARTENS, Gerhard , KOEHLER, Thomas
IPC分类号： G06T11/00
CPC分类号： G06T11/001 , G06T2207/10116
摘要： A method for providing a displayable pixel data set (11) from measurement data (3) provided by a differential phase-contrast X-ray imaging system (1) and a device (7) adapted to perform such method are proposed. The measurement data (3) comprise three types of measurement information: an absorption representing image data set A, a differential phase-contrast representing image data set D and a coherence representing image data set C. Each of the image data sets A, D and C comprises a 2-dimensional or 3-dimensional set of pixels (5) and the three image data sets are spatially aligned with each other. In the method for providing a displayable pixel data set, a colour value corresponding to a position in a 3- dimensional colour space (9) is attributed to each pixel (13) in the displayable pixel data set (11), wherein each of three coordinates HSI of the position in the 3-dimensional colour space (9) is determined based on data values A ij , D ij , C ij of a corresponding pixel (5) in a respective one of the image data sets A, D, C. For example, the coordinates within the colour space (9) may be indicated by an intensity I, a saturation S and a hue H thereby allowing a very intuitive representation of the complex DPCI measurement data to a human observer.
摘要翻译：提出了一种从由差分相位对比度X射线成像系统（1）提供的测量数据（3）和适于执行该方法的装置（7）提供可显示像素数据组（11）的方法。测量数据（3）包括三种类型的测量信息：表示图像数据组A的吸收，表示图像数据组D的差分相位对照和表示图像数据组C的相干。每个图像数据组A，D和 C包括2维或3维像素集合（5），并且三个图像数据集在空间上彼此对准。在提供可显示像素数据集的方法中，与可显示像素数据集合（11）中的每个像素（13）相对应的与三维颜色空间（9）中的位置相对应的颜色值，其中三个基于图像数据组A，D，C的相应一个中的对应像素（5）的数据值A ij，D ij，C ij确定三维颜色空间（9）中的位置的坐标HSI 例如，颜色空间（9）内的坐标可以由强度I，饱和度S和色调H来表示，从而允许对人类观察者的复杂DPCI测量数据的非常直观的表示。

64. 发明申请

WO2012073167A1 ITERATIVE RECONSTRUCTION ALGORITHM WITH A CONSTANT VARIANCE BASED WEIGHTING FACTOR 审中-公开
标题翻译：基于恒定变量因子的迭代重构算法
公开(公告)号：WO2012073167A1
公开(公告)日：2012-06-07
申请号：PCT/IB2011/055307
申请日：2011-11-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
发明人： BRENDEL, Bernhard Johannes , KOEHLER, Thomas , SCHMITT, Holger , BIPPUS, Rolf Dieter , PROKSA, Roland
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
摘要： A method includes reconstructing measured projection data using an iterative statistical reconstruction algorithm that reduces image artifact caused by differences in variances in projections of the measured projection data used to update a voxel of the image for one or more voxels of the image. A reconstructor includes a processor that reconstructs measured projection data using an iterative statistical reconstruction algorithm that reduces or mitigates image artifact caused by differences in variances in projections used to update a voxel of the image for one or more voxels of the image. A computer readable storage medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to: reduce image artifact caused by differences in variances in projections used to update a voxel of an image for one or more voxels of the image using an iterative statistical reconstruction algorithm.
摘要翻译：一种方法包括使用迭代统计重建算法来重建测量的投影数据，所述迭代统计重构算法减少由用于更新图像的一个或多个体素的图像的体素的测量投影数据的投影方差的差异引起的图像伪像。重构器包括使用迭代统计重构算法来重建测量的投影数据的处理器，其减少或减轻由用于更新图像的一个或多个体素的图像的体素的投影方差的差异引起的图像伪像。一种用计算机可执行指令编码的计算机可读存储介质，其在由计算机的处理器执行时使处理器能够：减少由用于更新一个或多个体素的图像的体素的投影方差的差异引起的图像伪像的图像使用迭代统计重建算法。

65. 发明申请

WO2012069964A1 FORWARD PROJECTION APPARATUS 审中-公开
标题翻译：前进投影装置
公开(公告)号：WO2012069964A1
公开(公告)日：2012-05-31
申请号：PCT/IB2011/055123
申请日：2011-11-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , BRENDEL, Bernhard, Johannes , SCHMITT, Holger , BIPPUS, Rolf Dieter
发明人： KOEHLER, Thomas , BRENDEL, Bernhard, Johannes , SCHMITT, Holger , BIPPUS, Rolf Dieter
IPC分类号： 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 performining 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）执行向前投影的前投投影装置，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。

66. 发明申请

WO2012056361A1 APPARATUS AND METHOD FOR HYBRID RECONSTRUCTION OF AN OBJECT FROM PROJECTION DATA. 审中-公开
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：WO2012056361A1
公开(公告)日：2012-05-03
申请号：PCT/IB2011/054581
申请日：2011-10-17
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY&STANDARDS GMBH , KOEHLER, Thomas , THRAN, Axel
发明人： KOEHLER, Thomas , THRAN, Axel
IPC分类号： G06T11/00
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，阴影伪像被减少，从而提高感兴趣对象的重建的最终图像的质量。

67. 发明申请

WO2011073818A1 MOTION COMPENSATION WITH TISSUE DENSITY RETENTION 审中-公开
标题翻译：运动补偿与组织密度保持
公开(公告)号：WO2011073818A1
公开(公告)日：2011-06-23
申请号：PCT/IB2010/055266
申请日：2010-11-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KOEHLER, Thomas , KLINDER, Tobias , KABUS, Sven
发明人： KOEHLER, Thomas , KLINDER, Tobias , KABUS, Sven
IPC分类号： 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来重建投影数据，从而产生运动和密度补偿图像数据。数据补偿器包括重构器，其基于补偿移动物体中的组织密度变化的重建算法来重建运动补偿图像数据。

68. 发明申请

WO2010109368A1 DIFFERENTIAL PHASE-CONTRAST IMAGING WITH CIRCULAR GRATINGS 审中-公开
标题翻译：具有圆形光栅的差分相位对比成像
公开(公告)号：WO2010109368A1
公开(公告)日：2010-09-30
申请号：PCT/IB2010/051098
申请日：2010-03-15
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , ROESSL, Ewald , KOEHLER, Thomas , MARTENS, Gerhard
发明人： ROESSL, Ewald , KOEHLER, Thomas , MARTENS, Gerhard
IPC分类号： A61B6/03 , G01N23/04 , G21K7/00
CPC分类号： G21K7/00 , A61B6/4291 , A61B6/484 , A61B6/502
摘要： The invention relates to an X-ray differential phase-contrast imaging system which has three circular gratings. The circular gratings are aligned with the optical axis of the radiation beam and a phase stepping is performed along the optical axis with the focal spot, the phase grating and/or the absorber grating. The signal measured is the phase-gradient in radial direction away from the optical axis.
摘要翻译：本发明涉及一种具有三个圆形光栅的X射线差分相位对比成像系统。圆形光栅与辐射束的光轴对准，并且沿着光轴与焦斑，相位光栅和/或吸收光栅一起执行相位步进。测量的信号是远离光轴的径向相位梯度。

69. 发明申请

WO2010103440A1 IRRADIATING AN ABSORPTION CONTRAST AGENT CONTAINED IN A TURBID MEDIUM 审中-公开
标题翻译：吸收涡轮介质中含有的吸收剂对照剂
公开(公告)号：WO2010103440A1
公开(公告)日：2010-09-16
申请号：PCT/IB2010/050952
申请日：2010-03-05
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BRENDEL, Bernhard, J. , NIELSEN, Tim , KOEHLER, Thomas , ZIEGLER, Ronny
发明人： BRENDEL, Bernhard, J. , NIELSEN, Tim , KOEHLER, Thomas , ZIEGLER, Ronny
IPC分类号： A61B5/00
CPC分类号： A61B5/0073 , A61B5/0091 , A61B5/4312 , A61B2562/146 , A61B2562/228
摘要： The invention relates to a device and a method of irradiating an absorption contrast agent contained in a turbid medium (10). The absorption contrast agent has different absorption coefficients for light of a first wavelength (λ1) and light of a second wavelength (λ2), and the turbid medium (10) has similar optical properties for light of the first and second wavelengths (λ1, λ2). The turbid medium (10) is irradiated with light of the first wavelength (λ1) and light of the second wavelength (λ2) at the same source position, and an intensity of light having the first wavelength (λ1) emanating from the turbid medium (10) at at least one detection position, and an intensity of light having the second wavelength (λ2) emanating substantially simultaneously from the turbid medium (10) at the same detection position are measured. An image may be reconstructed from the measured intensities.
摘要翻译：本发明涉及一种照射包含在浑浊介质（10）中的吸收造影剂的装置和方法。吸收造影剂对于第一波长（λ1）的光和第二波长（λ2）的光具有不同的吸收系数，并且浑浊介质（10）对于第一和第二波长（λ2）的光具有相似的光学性质。 1，θ2）。在相同的源位置处照射第一波长（λ1）的光和第二波长的光（λ2）的混浊介质（10），并且从第一波长（λ1）发出的光的强度从测量至少一个检测位置处的混浊介质（10），并且测量在相同检测位置从混浊介质（10）基本同时发出的具有第二波长（λ2）的光强度。可以从测量的强度重建图像。

70. 发明申请

WO2010052615A2 MOTION INFORMATION EXTRACTION 审中-公开
标题翻译：运动信息提取
公开(公告)号：WO2010052615A2
公开(公告)日：2010-05-14
申请号：PCT/IB2009/054792
申请日：2009-10-28
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , FORTHMANN, Peter , SCHMITT, Holger , VAN STEVENDAAL, Udo , KOEHLER, Thomas
发明人： FORTHMANN, Peter , SCHMITT, Holger , VAN STEVENDAAL, Udo , KOEHLER, Thomas
IPC分类号： G06T7/20 , G06T11/00 , A61B6/00
CPC分类号： G06T11/005 , G06T7/11 , G06T7/174 , G06T7/215 , G06T2207/10081 , G06T2207/20224 , G06T2207/30004 , G06T2211/412
摘要： A method includes creating a second set of projection data that includes substantially only selected structure of interest based on a first set of projection data that includes the selected structure of interest and other structure. Another method includes generating a second plurality of sliding window slices for a last slice of a first plurality of slices, selecting a second sliding window slice from the second plurality of sliding window slices based on the last slice of the first plurality of slices, and generating a second plurality of slices, including a first slice and a last slice, from a range of projection data around projection data corresponding to the last slice of the first plurality of slices.
摘要翻译：一种方法包括创建第二组投影数据，该第二组投影数据基于包括所选择的兴趣结构和其他结构的第一组投影数据基本上仅包括所选择的兴趣结构。另一种方法包括为第一多个片段的最后片段生成第二多个滑动窗口片段，基于第一多个片段的最后片段从第二多个滑动窗口片段中选择第二个滑动窗口片段，并且生成从与所述第一多个片段的最后片段相对应的投影数据周围的投影数据范围的第二多个片段，包括第一片段和最后片段。

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