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1. 发明申请

WO2009066201A3 IMAGING APPARATUS, IMAGING METHOD AND COMPUTER PROGRAM FOR DETERMINING AN IMAGE OF A REGION OF INTEREST 审中-公开
公开(公告)号：WO2009066201A3
公开(公告)日：2009-05-28
申请号：PCT/IB2008/054711
申请日：2008-11-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BONTUS, Claas
发明人： BONTUS, Claas
IPC分类号： G01T1/29
摘要： The present invention relates to an imaging apparatus for determining an image of a region of interest, wherein a motion generation unit (1, 7, 8) moves the radiation source (2) and a region of interest relative to each other along a first trajectory (32), while a detection unit (6) detects first detection data. A reconstruction data determination unit (12) determines reconstruction data among the first detection data and a second trajectory determination unit (13) determines a second trajectory (32) depending on the reconstruction data. After that the motion generation unit (1, 7, 8) moves the radiation source (2) and the region of interest relative to each other along the second trajectory (32), while the detection unit (6) detects second detection data. The reconstruction data and the second detection data are used by a reconstruction unit (14) for reconstructing an image of the region of interest.

2. 发明申请

WO2008149281A1 COMPUTED TOMOGRAPHY APPARATUS FOR IMAGING A REGION OF INTEREST 审中-公开
标题翻译：用于成像感兴趣区域的计算机图形设备
公开(公告)号：WO2008149281A1
公开(公告)日：2008-12-11
申请号：PCT/IB2008/052151
申请日：2008-06-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BONTUS, Claas
发明人： BONTUS, Claas
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , G06T2211/421
摘要： The invention relates to a computed tomography apparatus for imaging a region of interest comprising a projection data values generation unit and an image generation device (10). The projection data values generation unit comprises a radiation source (2) for emitting radiation (4) for traversing the region of interest, a detection unit (6) for generating projection data values depending on the radiation (4) after having traversed the region of interest, and a driving unit (1, 7) for rotating the radiation source (2) and the region of interest relative to each other around a rotational axis along a trajectory. The image generation device (10) generates an image of the region of interest from the projection data values, wherein the image generation device (10) is adapted for giving projection data values of a short-scan interval a larger weight than projection data values outside of the short-scan interval during the generation of the image.
摘要翻译：本发明涉及一种用于对包括投影数据值生成单元和图像生成装置（10）的投影区域成像的计算机断层摄影装置。投影数据值生成单元包括用于发射用于遍历感兴趣区域的辐射（4）的辐射源（2），用于在穿过该区域之后产生依赖于辐射（4）的投影数据值的检测单元（6）以及用于沿着轨迹围绕旋转轴线相对于彼此旋转辐射源（2）和感兴趣区域的驱动单元（1,7）。图像生成装置（10）从投影数据值生成感兴趣区域的图像，其中，图像生成装置（10）适于给出比外部的投影数据值更大的权重的短扫描间隔的投影数据值在图像生成期间的短扫描间隔。

3. 发明申请

WO2005023114A8 COMPUTER TOMOGRAPHY METHOD USING A CONE-SHAPED BUNDLE OF RAYS 审中-公开
标题翻译：计算机图形方法使用一个锥形的组合
公开(公告)号：WO2005023114A8
公开(公告)日：2006-06-29
申请号：PCT/IB2004051523
申请日：2004-08-23
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , BONTUS CLAAS , KOEHLER THOMAS , GRASS MICHAEL
发明人： BONTUS CLAAS , KOEHLER THOMAS , GRASS MICHAEL
IPC分类号： A61B6/00 , A61B6/03 , G06T11/00
CPC分类号： A61B6/5217 , A61B6/027 , A61B6/032 , A61B6/4028 , A61B6/5264 , A61B6/527 , A61B6/541 , G06T11/005 , G06T11/006 , G06T2211/412
摘要： The invention relates to a computer tomography method in which an examination area is passed through by a cone-shaped bundle of rays. The bundle of rays comes from a radiation source location which moves around the examination area on an overall trajectory. The overall trajectory consists of a first, closed partial trajectory, at least one second, closed partial trajectory and at least one third partial trajectory which connects the first and the at least one second partial trajectories to one another. Measured values which depend on the intensity in the bundle of rays on the other side of the examination area are acquired by means of a detector unit while the radiation source location is moving on the overall trajectory, and a CT image of the examination area is reconstructed from these measured values.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中检查区域通过锥形束的光束通过。一束光线来自在总体轨迹上围绕检查区域移动的辐射源位置。整个轨迹由第一，闭合的部分轨迹，至少一个第二，闭合的部分轨迹和至少一个将第一和第二部分轨迹相互连接的第三部分轨迹组成。在辐射源位置在整个轨迹上移动的同时，通过检测器单元获取取决于检查区另一侧的光线束强度的测量值，并且重建检查区域的CT图像从这些测量值。

4. 发明申请

WO2004044849A1 METHOD AND APPARATUS FOR EXACT CONE BEAM COMPUTED TOMOGRAPHY 审中-公开
标题翻译：用于精确计算光束计算机图像的方法和装置
公开(公告)号：WO2004044849A1
公开(公告)日：2004-05-27
申请号：PCT/IB2003/004952
申请日：2003-11-03
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , BONTUS, Claas , KÖHLER, Thomas
发明人： BONTUS, Claas , KÖHLER, Thomas
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416 , G06T2211/421 , Y10S378/901
摘要： The invention relates to a computed tomography method in which an examination zone is irradiated along a helical trajectory by a conical radiation beam. The radiation transmitted by the examination zone is measured by means of a detector unit and therefrom the absorption distribution in the examination zone is reconstructed without approximations. The reconstruction comprises a derivation of the measuring values of parallel rays of different projections, an integration of these values along K lines, a weighting of these values and a back projection.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中通过锥形辐射束沿着螺旋轨迹照射检查区。通过检测器单元测量由检查区传输的辐射，从而重建检查区中的吸收分布而不进行近似。重构包括不同投影的平行光线的测量值的推导，这些值沿K线的积分，这些值的加权和反投影。

5. 发明申请

WO2012077035A1 APPARATUS AND METHOD FOR INFLUENCING AND/OR DETECTING MAGNETIC PARTICLES 审中-公开
标题翻译：影响和/或检测磁性颗粒的装置和方法
公开(公告)号：WO2012077035A1
公开(公告)日：2012-06-14
申请号：PCT/IB2011/055456
申请日：2011-12-05
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BONTUS, Claas , GLEICH, Bernhard
发明人： BONTUS, Claas , GLEICH, Bernhard
IPC分类号： A61B5/05
CPC分类号： A61B5/0515
摘要： The present invention relates to an apparatus and a method for influencing and/or detecting magnetic particles in a field of view (28), in particular for magnetic particle imaging (MPI). The proposed apparatus comprises selection means for generating a magnetic selection field (50) and drive means for generating a magnetic drive field for moving a field- free point along a predetermined trajectory through the field of view so that the magnetization of the magnetic material changes locally. According to the present invention a time-dependent oscillating drive field current is provided per drive field coil for driving the respective drive field coil, each drive field current having one or more individual oscillating frequencies and one or more individual current amplitudes and being generated by a corresponding drive field voltage per drive field coil (136a, 136b, 136c), each drive field voltage being generated by a superposition of a number of drive field voltage components including a drive field voltage component per drive field coil, wherein a drive field voltage component corresponding to a particular drive field coil comprises one or more sub¬ components, a sub-component having an individual voltage amplitude and having the same individual oscillating frequency as the respective drive field current of said particular drive field coil.
摘要翻译：本发明涉及一种用于影响和/或检测视场（28）中的磁性颗粒的设备和方法，特别是用于磁性颗粒成像（MPI）。所提出的装置包括用于产生磁选区（50）的选择装置和用于产生磁驱动场的驱动装置，用于沿着预定轨迹沿视场移动无场点，使得磁性材料的磁化在局部变化。根据本发明，每个驱动励磁线圈提供时间依赖的振荡驱动场电流，用于驱动相应的驱动场线圈，每个驱动场电流具有一个或多个单个振荡频率和一个或多个单独的电流幅度，并由每个驱动场线圈（136a，136b，136c）的对应的驱动场电压，每个驱动场电压由多个驱动场电压分量的叠加产生，每个驱动场电压分量包括每个驱动场线圈的驱动场电压分量，其中驱动场电压分量对应于特定的驱动场线圈包括一个或多个子组件，具有单个电压振幅并且具有与所述特定驱动场线圈的相应驱动场电流相同的独立振荡频率的子分量。

6. 发明申请

WO2008075267A2 DEVICE AND METHOD FOR IMAGING AN OBJECT 审中-公开
标题翻译：用于成像对象的装置和方法
公开(公告)号：WO2008075267A2
公开(公告)日：2008-06-26
申请号：PCT/IB2007/055083
申请日：2007-12-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , SHECHTER, Gilad , GLASBERG, Shmuel , VAN STEVENDAAL, Udo , FORTHMANN, Peter , KOEHLER, Thomas , BONTUS, Claas
发明人： SHECHTER, Gilad , GLASBERG, Shmuel , VAN STEVENDAAL, Udo , FORTHMANN, Peter , KOEHLER, Thomas , BONTUS, Claas
IPC分类号： A61B6/06 , A61B6/00
CPC分类号： A61B6/06
摘要： An imaging device (100,200) for imaging a volume of interest (5,45) of a subject (4,44) comprises a radiation source (1) for emitting radiation (6), which is arranged for rotational movement around an axis (8) of the subject (4,44), a collimator (3) for collimating the radiation (6) at least in the axial direction of the subject (4,44) before traversing through the subject (4,44), a detector (2) for receiving the collimated radiation (11,12,13,14,15,16) that has traversed through the subject (4,44), and a control unit (7) for controlling the collimator (3) based on at least one geometry parameter that defines a geometrical relationship between the volume of interest (5,45) and the imaging device (100,200). The imaging device (100,200) provides for a reduced dose of radiation applied to the subject (4,44).
摘要翻译：用于对受检者（4,44）的感兴趣体积（5,45）成像的成像设备（100,200）包括用于发射辐射（6）的辐射源（1），该辐射源用于围绕对象（4,44）的轴线（8）进行旋转运动;准直器（3），用于在横穿对象（444）之前至少沿对象（4,44）的轴向方向校准辐射（6）（4,44），用于接收穿过对象（4,44）的准直辐射（11,12,13,14,15,16）的检测器（2），以及控制单元（7）（3），所述至少一个几何参数定义所述感兴趣体积（5,45）和所述成像装置（100,200）之间的几何关系。成像装置（100,200）为受试者提供减少的辐射剂量（4,44）。

7. 发明申请

WO2008026153A2 IMAGING SYSTEM 审中-公开
标题翻译：成像系统
公开(公告)号：WO2008026153A2
公开(公告)日：2008-03-06
申请号：PCT/IB2007/053442
申请日：2007-08-28
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , BONTUS, Claas , GRASS, Michael , KOEHLER, Thomas
发明人： BONTUS, Claas , GRASS, Michael , KOEHLER, Thomas
IPC分类号： A61B6/03
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。

8. 发明申请

WO2007129244A2 X-RAY TUBE WITH OSCILLATING ANODE 审中-公开
标题翻译：带振动阳极的X射线管
公开(公告)号：WO2007129244A2
公开(公告)日：2007-11-15
申请号：PCT/IB2007/051525
申请日：2007-04-25
申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , KONINKLIJKE PHILIPS ELECTRONICS N.V. , FORTHMANN, Peter , BONTUS, Claas , KÖHLER, Thomas
发明人： FORTHMANN, Peter , BONTUS, Claas , KÖHLER, Thomas
IPC分类号： A61B6/03 , H01J35/28
CPC分类号： A61B6/032 , A61B6/4021 , H01J35/101 , H01J35/26 , H01J35/28 , H01J2235/10
摘要： It is described an X-ray tube (205) comprising an electron source (250), adapted for generating an electron beam (255) projecting along a beam axis, an electron deflection device (256) for deflecting the generated electron beam (255), a control unit (257) being coupled to the electron deflection device (256) for spatially controlling the beam axis, and an anode (206), which is arranged within the beam axis such that the electron beam (255) impinges onto a focal spot of a surface of the anode (206). Thereby the anode (206) is movable along a z-axis in an oscillating manner, the surface of the anode (206) is oriented oblique with respect to the z-axis, and the control unit (257) is adapted to spatially control the focal spot (255 a) in such a manner that the focal spot moves essentially in a discrete manner between a first focal spot position (106a, 406a) having a first z-coordinate and a second focal spot position (106b, 406b) having a second z-coordinate being different from the first z-coordinate. It is further described a computed tomography system (100) being equipped with the X-ray tube (205) and a method for operating the X-ray tube (205).
摘要翻译：描述了包括适于产生沿着光束轴突出的电子束（255）的电子源（250）的X射线管（205），用于使所产生的电子束（255）偏转的电子偏转装置（256）耦合到电子偏转装置（256）的空间控制光束轴的控制单元（257）和布置在光束轴线内的阳极（206），使得电子束（255）撞击焦点阳极表面的光斑（206）。因此，阳极（206）可以以振荡方式沿Z轴移动，阳极（206）的表面相对于z轴倾斜定向，并且控制单元（257）适于空间控制焦点（255a），使得焦点基本上以离散的方式移动在具有第一z坐标的第一焦点位置（106a，406a）和具有第一焦点位置（106b，406b）之间的焦点第二z坐标与第一z坐标不同。进一步描述配备有X射线管（205）的计算机断层摄影系统（100）和用于操作X射线管（205）的方法。

9. 发明申请

WO2007004196A3 EXACT FBP TYPE ALGORITHM FOR ARBITRARY TRAJECTORIES 审中-公开
标题翻译：用于仲裁TRAJECTORIES的精确FBP类型算法
公开(公告)号：WO2007004196A3
公开(公告)日：2007-05-03
申请号：PCT/IB2006052248
申请日：2006-07-04
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KOEHLER THOMAS , BONTUS CLAAS , PROKSA ROLAND
发明人： KOEHLER THOMAS , BONTUS CLAAS , PROKSA ROLAND
IPC分类号： A61B6/03 , G01N23/04 , G06T11/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , G06T11/006 , G06T2211/416 , G06T2211/421
摘要： Exact methods of FBP reconstruction may have the restriction that the object point to be reconstructed and the first and last source position used for back- projection must lie on a line. According to an exemplary embodiment of the present invention, a method of FBP reconstruction is provided, comprising a filtering of the projection data along a projected M-line and a back-projecting of the filtered projection data over an interval larger than the PI interval of the object point. This may provide for an exact FBP type algorithm for arbitrary trajectories.
摘要翻译： FBP重建的精确方法可能具有要重构的对象点的限制，并且用于反投影的第一和最后一个源位置必须位于一行上。根据本发明的示例性实施例，提供了一种FBP重构的方法，包括沿着投影M线对投影数据进行滤波，并且在大于PI间隔的间隔上对经过滤的投影数据进行反投影对象点。这可以为任意轨迹提供精确的FBP类型算法。

10. 发明申请

WO2004075106A3 COMPUTERIZED TOMOGRAPHY METHOD WITH HELICAL RELATIVE MOVEMENT AND CONICAL BEAM 审中-公开
标题翻译：具有螺旋相对运动和环形梁的计算机图形方法
公开(公告)号：WO2004075106A3
公开(公告)日：2005-03-10
申请号：PCT/IB2004000346
申请日：2004-02-11
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , BONTUS CLAAS , KOEHLER THOMAS
发明人： BONTUS CLAAS , KOEHLER THOMAS
IPC分类号： G06T20060101 , G06T1/00 , G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416 , G06T2211/421
摘要： The invention relates to a computerized tomography method, in which an examination area is scanned radiographically along a helical trajectory by a conical beam. The radiation transmitted through the examination area is measured by means of a detector unit, wherein the absorption distribution in the examination area is reconstructed exactly or at least quasi-exactly from these measured values. Reconstruction uses redundant measured values and comprises derivation of the measured values from parallel rays of different projections, integration of these values along kappa -lines, weighting of these values and back-projection.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中通过锥形光束沿着螺旋轨迹对X射线照相检查区域进行扫描。透过检查区域的辐射通过检测器单元测量，其中检查区域中的吸收分布被准确地或至少准确地从这些测量值重建。重构使用冗余的测量值，并且包括从不同投影的平行光线导出的测量值，这些值沿着kappa线的积分，这些值的加权和反投影。

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