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1. 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。

2. 发明申请

WO2008026153A3 IMAGING SYSTEM 审中-公开
标题翻译：成像系统
公开(公告)号：WO2008026153A3
公开(公告)日：2008-07-17
申请号：PCT/IB2007053442
申请日：2007-08-28
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , 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：本发明涉及一种用于对感兴趣的区域成像的成像系统，具体涉及一种计算机断层摄影系统。该成像系统包括照射单元（2），其沿着第一轨迹（501）并且沿着第二轨迹（503）相对于感兴趣的区域移动。在照射单元（2）沿着第一轨道（501）移动期间，获取第一检测数据，并且在照射单元（2）沿着第二轨迹（503）移动的同时获取第二检测数据。至少从第二检测数据重构感兴趣区域的中间图像，并且通过经由中间图像的前向投影来确定虚拟检测数据。最后，根据第一检测数据和虚拟检测数据重建感兴趣区域的图像。

3. 发明申请

WO2005023114A2 COMPUTER TOMOGRAPHY METHOD USING A CONE-SHAPED BUNDLE OF RAYS 审中-公开
标题翻译：计算机层析成像方法，使用锥形束
公开(公告)号：WO2005023114A2
公开(公告)日：2005-03-17
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射线束。射线束来自辐射源位置，其在整个轨迹上围绕检查区域移动。整个轨迹由第一闭合部分轨迹，至少一个第二闭合部分轨迹以及将第一部分轨迹和至少一个第二部分轨迹彼此连接的至少一个第三部分轨迹组成。在辐射源位置在整个轨迹上移动的同时，借助于检测器单元获取取决于检查区域的另一侧的光线束中的强度的测量值，并且重建检查区域的CT图像从这些测量值。

4. 发明申请

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。

5. 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。

6. 发明申请

WO2007129244A3 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：WO2007129244A3
公开(公告)日：2008-01-10
申请号：PCT/IB2007051525
申请日：2007-04-25
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , FORTHMANN PETER , BONTUS CLAAS , KOEHLER THOMAS
发明人： FORTHMANN PETER , BONTUS CLAAS , KOEHLER 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), in particular for use in computed tomography, comprising an electron source (250), for generating an electron beam (255), 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 deflection, and an anode (206), which is arranged 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.
摘要翻译：描述了一种特别用于计算机断层摄影的X射线管（205），包括用于产生电子束（255）的电子源（250），用于使所产生的电子束偏转的电子偏转装置（256）（255），耦合到电子偏转装置（256）的空间控制偏转的控制单元（257）和阳极（206），其布置成使得电子束（255）撞击到阳极的表面（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坐标的第一焦斑位置（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。

7. 发明申请

WO2008075267A3 DEVICE AND METHOD FOR IMAGING AN OBJECT 审中-公开
标题翻译：用于成像对象的设备和方法
公开(公告)号：WO2008075267A3
公开(公告)日：2008-08-14
申请号：PCT/IB2007055083
申请日：2007-12-13
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , 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
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：用于对受试者（4,44）感兴趣的体积（5,45）进行成像的成像装置（100,200）包括用于发射辐射（6）的辐射源（1），其布置成围绕轴线（8 ），用于在穿过被摄体（4,44）之前至少在被检体（4,44）的轴向上校准辐射（6）的准直器（3），检测器（4,44） 2），用于接收已经穿过被摄体的准直辐射（11,12,13,14,15,16），以及用于至少基于控制单元（7）控制准直仪（3）的控制单元（7）一个几何参数，其定义感兴趣的体积（5,45）和成像装置（100,200）之间的几何关系。成像装置（100,200）提供施加到对象的减少剂量的辐射（4,44）。

8. 发明申请

WO2005091216A2 MULTIPLE FOCUS ACQUISITION 审中-公开
标题翻译：多重焦点收购
公开(公告)号：WO2005091216A2
公开(公告)日：2005-09-29
申请号：PCT/IB2005050824
申请日：2005-03-07
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KOEHLER THOMAS , BONTUS CLAAS
发明人： KOEHLER THOMAS , BONTUS CLAAS
IPC分类号： G01T1/164 , G06T5/00 , G06T11/00
CPC分类号： G06T11/005 , G01T1/1647 , Y10S378/901
摘要： Image quality is an important feature for CT scanning, in particular for helical cone-beam CT scanning. By using projection data acquired at two different positions of the focal spot of the radiation beam and rebinning that projection data from a first geometry to a second geometry the two sub-sets of projection data are combined to one rebinned projection data set, thereby improving the radial resolution of the data set. Advantageously, according to an aspect of the present invention, a further rebinning may be performed, from the second geometry back to the first geometry, therefore resulting in a projection data set in the initial geometry with a higher radial resolution.
摘要翻译：图像质量是CT扫描的重要特征，特别是螺旋锥束CT扫描。通过使用在辐射束的焦斑的两个不同位置处获取的投影数据，并将投影数据从第一几何重新组合到第二几何形状，将两个投影数据子集组合成一个重新投影的投影数据集，从而改善数据集的径向分辨率。有利地，根据本发明的一个方面，可以从第二几何体到第一几何形状进行进一步的重新组合，因此导致在初始几何形状中以更高的径向分辨率设置的投影数据。

9. 发明申请

WO2007072286A3 METHOD FOR MOVEMENT COMPENSATION OF IMAGE DATA 审中-公开
标题翻译：图像数据运动补偿方法
公开(公告)号：WO2007072286A3
公开(公告)日：2007-10-18
申请号：PCT/IB2006054727
申请日：2006-12-11
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , GRASS MICHAEL , KOEHLER THOMAS
发明人： GRASS MICHAEL , KOEHLER THOMAS
IPC分类号： G06T11/00
CPC分类号： A61B6/032 , A61B6/541 , G06T11/005 , G06T2211/412
摘要： According to an exemplary embodiment a method for movement compensation of image data of an object of interest comprises receiving projection data, receiving motion vector field data, and dividing the motion vector field data into a number of layers of motion vector field data. Furthermore, the method comprises generating motion compensated projection data by projecting at least one of the number of layered motion vector field data onto the projection data and applying a two dimensional motion compensation on the projection, and generating image data of at least one voxel by back-projecting the movement compensated projection data.
摘要翻译：根据示例性实施例，感兴趣对象的图像数据的移动补偿的方法包括接收投影数据，接收运动矢量场数据，以及将运动矢量场数据分成多个运动矢量场数据层。此外，该方法包括通过将多个分层运动矢量场数据中的至少一个投影到投影数据上并在投影上应用二维运动补偿来生成运动补偿投影数据，并且通过返回生成至少一个体素的图像数据 - 投影运动补偿投影数据。

10. 发明申请

WO2006067671A3 METHOD AND APPARATUS FOR CARDIAC COMPUTED TOMOGRAPHY 审中-公开
标题翻译：心脏计算机图像的方法和装置
公开(公告)号：WO2006067671A3
公开(公告)日：2006-09-14
申请号：PCT/IB2005054198
申请日：2005-12-13
申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , FORTHMANN PETER , KOEHLER THOMAS , MANZKE ROBERT , GRASS MICHAEL , ZIEGLER ANDY
发明人： FORTHMANN PETER , KOEHLER THOMAS , MANZKE ROBERT , GRASS MICHAEL , ZIEGLER ANDY
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503
摘要： A method of recording images of the heart in computed tomography is provided in which, in order to prevent movement artifacts, the images are reconstructed on the basis of similar movement states of the heart and different radiation intensities are used for different movement states. During recording operation low-resolution images are continually reconstructed from the recorded data. The movement state of the heart is determined from the low- resolution images, preferably by comparing successive images. During the desired heart phase with little heart movement the power of the X-ray tube is increased. A high-resolution reconstruÌtion is carried out retrospectively from data recorded with a high radiation intensity in similar movement states with little heart movement. Also disclosed are a CT apparatus and a computer program for carrying out the method.
摘要翻译：提供了一种在计算机断层摄影中记录心脏图像的方法，其中为了防止运动伪像，基于心脏的相似运动状态重建图像，并且不同的辐射强度用于不同的运动状态。在记录操作期间，从记录的数据中连续重建低分辨率图像。优选地，通过比较连续图像，从低分辨率图像确定心脏的移动状态。在期望的心脏移动期间，X射线管的功率增加。从具有较小的心脏运动的相似运动状态下以高辐射强度记录的数据追溯地进行高分辨率重建。还公开了一种用于执行该方法的CT装置和计算机程序。

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