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21. 发明申请

US20110058644A1 SOURCE AND/OR DETECTOR POSITIONING SYSTEM 有权
标题翻译：源和/或检测器定位系统
公开(公告)号：US20110058644A1
公开(公告)日：2011-03-10
申请号：US12990278
申请日：2009-04-30
申请人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
发明人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
IPC分类号： A61B6/03 , G01T1/24
CPC分类号： A61B6/4447 , A61B6/06 , A61B6/4021
摘要： A medical imaging system includes a generally stationary gantry (102) and a rotating gantry (106), rotatably supported by the generally stationary gantry (102), that rotates about a longitudinal axis around an examination region. The medical imaging system further includes a radiation source (112) that emits a radiation beam that traverses the examination region. The radiation source (112) is moveably affixed to the rotating gantry (106) so as to translate in a direction of the longitudinal axis with respect to the rotating gantry (106) while scanning a subject in the examination region. The medical imaging system further includes a detector array (120) that detects the radiation beam that traverses the examination region and generates a signal indicative thereof. The detector array (120) is moveably affixed to the rotating gantry (106) so as to move in coordination with the radiation source (112) while scanning the subject in the examination region.
摘要翻译：医疗成像系统包括大致固定的机架（102）和旋转支架（106），旋转机架（106）由大体上固定的机架（102）可旋转地支撑，围绕检查区域围绕纵向轴线旋转。医疗成像系统还包括发射穿过检查区域的辐射束的辐射源（112）。辐射源（112）可移动地固定到旋转机架（106）上，以便在扫描检查区域中的被检体的同时相对于旋转台架（106）在纵向轴线的方向上平移。医疗成像系统还包括检测器阵列（120），其检测穿过检查区域的辐射束并产生指示其的信号。检测器阵列（120）可移动地固定到旋转机架（106），以在扫描检查区域中的对象时与辐射源（112）协调地移动。

22. 发明授权

US07580499B2 Coherent-scatter computed tomography 失效
标题翻译：相干散射计算机断层扫描
公开(公告)号：US07580499B2
公开(公告)日：2009-08-25
申请号：US10575584
申请日：2004-10-05
申请人： Udo Van Stevendaal , Claas Bontus , Peter Forthmann
发明人： Udo Van Stevendaal , Claas Bontus , Peter Forthmann
IPC分类号： A61B6/03
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416 , Y10S378/901
摘要： Known reconstruction techniques from coherent scattered x-rays apply non-exact reconstruction techniques. According to the present invention, a relatively wide spectrum of wave-vector transfers q of the scattered x-ray photons is acquired. The projection data is interpreted as line integrals in the x y-q space and the projection data is resorted to correspond to an acquisition along any source trajectory. Due to this, an exact helical reconstruction algorithms may be applied and redundant data may be used to obtain a better image quality.
摘要翻译：来自相干散射X射线的已知重建技术应用非精确重建技术。根据本发明，获得了散射的x射线光子的相对宽的波矢量传输q。投影数据被解释为x y-q空间中的线积分，并且投影数据被用来对应于沿着任何源轨迹的获取。因此，可以应用精确的螺旋重建算法，并且可以使用冗余数据来获得更好的图像质量。

23. 发明申请

US20080095299A1 Multiple focus acquisition 有权
标题翻译：多重对焦采集
公开(公告)号：US20080095299A1
公开(公告)日：2008-04-24
申请号：US10598866
申请日：2005-03-07
申请人： Thomas Kohler , Claas Bontus
发明人： Thomas Kohler , Claas Bontus
IPC分类号： G06T11/00 , G06T9/00
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，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。

24. 发明申请

US20090310825A1 IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST COMPRISING A MOVING OBJECT 有权
标题翻译：用于成像包含运动对象的兴趣区域的成像系统
公开(公告)号：US20090310825A1
公开(公告)日：2009-12-17
申请号：US12521899
申请日：2008-01-02
申请人： Claas Bontus , Michael Grass , Carsten Oliver Schirra , Udo Van Stevendaal , Guy Lavi
发明人： Claas Bontus , Michael Grass , Carsten Oliver Schirra , Udo Van Stevendaal , Guy Lavi
IPC分类号： G06K9/00
CPC分类号： G06T7/20 , A61B5/0402 , A61B6/027 , A61B6/032 , A61B6/469 , A61B6/503 , A61B6/504 , A61B6/541
摘要： The invention relates to an imaging system for imaging a region of interest comprising a moving object, which moves less in small motion phases than in large motion phases. Detection values are provided and a small motion determination unit (15) determines the motion of the object in the region of interest in the small motion phases from the 5 detection values. A large motion determination unit (16) determines the motion of the object in the large motion phases from the determined motion of the object in the small motion phases. A reconstruction unit (17) reconstructs an image of the region of interest from the detection values, wherein the reconstruction unit (17) is adapted for performing a motion compensation using the determined motions in the small and large motion phases.
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，该成像系统包括移动物体，该运动物体在小运动相位上比在大运动相位中运动较少。提供检测值，并且小运动确定单元（15）从5个检测值确定在小运动相位中的感兴趣区域中的对象的运动。大运动确定单元（16）根据所确定的小运动阶段中的物体的运动来确定物体在大运动相位中的运动。重建单元（17）从检测值重建感兴趣区域的图像，其中重建单元（17）适于使用在小的和大的运动阶段中确定的运动来执行运动补偿。

25. 发明申请

US20090238328A1 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：US20090238328A1
公开(公告)日：2009-09-24
申请号：US12299477
申请日：2007-04-25
申请人： Peter Forthmann , Claas Bontus , Thomas Köhler
发明人： Peter Forthmann , Claas Bontus , Thomas Köhler
IPC分类号： A61B6/00 , H01J35/00 , H01J35/30
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），用于偏转生成的电子束的电子偏转装置（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。

26. 发明授权

US07548603B2 Method and apparatus for exact cone beam computed tomography 失效
标题翻译：精确锥束计算机断层扫描的方法和装置
公开(公告)号：US07548603B2
公开(公告)日：2009-06-16
申请号：US10534158
申请日：2003-11-03
申请人： Claas Bontus , Thomas Köhler
发明人： Claas Bontus , Thomas Köhler
IPC分类号： A61B6/03
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，并且由此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。

27. 发明申请

US20080260093A1 Computer Tomography Apparatus with Multiple X-Ray Radiation Sources 失效
标题翻译：具有多个X射线辐射源的计算机断层摄影装置
公开(公告)号：US20080260093A1
公开(公告)日：2008-10-23
申请号：US11817031
申请日：2006-02-20
申请人： Claas Bontus
发明人： Claas Bontus
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4007 , A61B6/4014 , A61B6/4488 , G01N23/046 , G01N2223/419
摘要： A computer tomography apparatus (100) for examination of an object of interest (107), the computer tomography apparatus (100) comprising a first electromagnetic radiation source (104) adapted to emit electromagnetic radiation to an object of interest (107), a second electromagnetic radiation source (203) adapted to emit electromagnetic radiation to the object of interest (107), at least one detecting device (108) adapted to detect electromagnetic radiation generated by the first electromagnetic radiation source (104) and by the second electromagnetic radiation source (203) and scattered on the object of interest (107), and a determination unit (118) adapted to determine structural information concerning the object of interest (107) based on an analysis of detecting signals received from the at least one detecting device (108).
摘要翻译：一种用于检查感兴趣对象（107）的计算机断层摄影装置（100），所述计算机断层摄影装置（100）包括适于向感兴趣对象（107）发射电磁辐射的第一电磁辐射源（104），第二适于向感兴趣物体（107）发射电磁辐射的电磁辐射源（203），适于检测由第一电磁辐射源（104）产生的电磁辐射的第一电磁辐射源（203）并分散在感兴趣对象（107）上，以及确定单元（118），用于基于从至少一个检测设备接收的检测信号的分析来确定关于感兴趣对象（107）的结构信息（107） 108）。

28. 发明授权

US07430270B2 Computerized tomography method with helical relative movement and conical beam 有权
标题翻译：具有螺旋相对运动和锥形束的计算机断层扫描方法
公开(公告)号：US07430270B2
公开(公告)日：2008-09-30
申请号：US11570101
申请日：2005-06-09
申请人： Claas Bontus , Thomas Kohler
发明人： Claas Bontus , Thomas Kohler
IPC分类号： H05G1/60
CPC分类号： A61B6/4042 , A61B6/027 , A61B6/032 , A61B6/4035 , A61B6/4085 , G06T11/005
摘要： The invention relates to a computerized tomography method, wherein a radiation source executes an nPi relative movement along a helix with respect to an object. Acquired measured values are partially derived according to the angular position of the radiation source on the helix and intermediate filter values are generated by filtering the derived measured values along the filter lines with a k filter. Each intermediate filter value is multiplied by a filter factor, where the filter factor for intermediate filter values that have been generated by filtering the derived measured values along filter lines, which run exclusively within the Pi window, is greater than or equal to those filter factors by which the intermediate filter values are multiplied, which have been generated by filtering the derived measured values along filter lines, which run inside as well as outside the Pi window. The intermediate filter values assigned to a measured value are added to a filter value and the filter values are back-projected for reconstruction of a CT image.
摘要翻译：本发明涉及一种计算机断层摄影方法，其中辐射源相对于物体沿螺旋线执行nPi相对运动。获得的测量值根据辐射源在螺旋上的角位置被部分地导出，并且通过用k滤波器对沿滤波器线的导出的测量值进行滤波来生成中间滤波器值。每个中间滤波器值乘以一个滤波器因子，其中通过滤波器线产生的中间滤波器值的滤波因子，该滤波器值仅在Pi窗口内运行，大于或等于那些滤波器因子通过它们乘以中间滤波器值，其通过沿着沿窗口内部以及外部的滤波器线过滤导出的测量值而产生。分配给测量值的中间滤波器值被添加到滤波器值，并且滤波器值被反投影用于重建CT图像。

29. 发明授权

US08693621B2 Source and/or detector positioning system 有权
标题翻译：源和/或探测器定位系统
公开(公告)号：US08693621B2
公开(公告)日：2014-04-08
申请号：US12990278
申请日：2009-04-30
申请人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
发明人： Axel Thran , Claas Bontus , Peter Forthmann , Roland Proksa , Ronald B. Sharpless , Dominic J. Heuscher , Felix Peeters , Johannes Bathazar Maria Soetens
IPC分类号： A61B6/03
CPC分类号： A61B6/4447 , A61B6/06 , A61B6/4021
摘要： A medical imaging system includes a generally stationary gantry (102) and a rotating gantry (106), rotatably supported by the generally stationary gantry (102), that rotates about a longitudinal axis around an examination region. The medical imaging system further includes a radiation source (112) that emits a radiation beam that traverses the examination region. The radiation source (112) is moveably affixed to the rotating gantry (106) so as to translate in a direction of the longitudinal axis with respect to the rotating gantry (106) while scanning a subject in the examination region. The medical imaging system further includes a detector array (120) that detects the radiation beam that traverses the examination region and generates a signal indicative thereof. The detector array (120) is moveably affixed to the rotating gantry (106) so as to move in coordination with the radiation source (112) while scanning the subject in the examination region.
摘要翻译：医疗成像系统包括大致固定的机架（102）和旋转支架（106），旋转机架（106）由大体上固定的机架（102）可旋转地支撑，围绕检查区域围绕纵向轴线旋转。医疗成像系统还包括发射穿过检查区域的辐射束的辐射源（112）。辐射源（112）可移动地固定到旋转机架（106）上，以便在扫描检查区域中的被检体的同时相对于旋转台架（106）在纵向轴线的方向上平移。医疗成像系统还包括检测器阵列（120），其检测穿过检查区域的辐射束并产生指示其的信号。检测器阵列（120）可移动地固定到旋转机架（106），以在扫描检查区域中的对象时与辐射源（112）协调地移动。

30. 发明申请

US20100246888A1 IMAGING APPARATUS, IMAGING METHOD AND COMPUTER PROGRAM FOR DETERMINING AN IMAGE OF A REGION OF INTEREST 审中-公开
标题翻译：成像设备，成像方法和计算机程序，用于确定一个利益区域的图像
公开(公告)号：US20100246888A1
公开(公告)日：2010-09-30
申请号：US12742948
申请日：2008-11-11
申请人： Claas Bontus
发明人： Claas Bontus
IPC分类号： G06K9/00
CPC分类号： G01T1/2985 , A61B6/027
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.
摘要翻译：本发明涉及一种用于确定感兴趣区域的图像的成像装置，其中运动生成单元（1,7,8）沿着第一轨迹移动辐射源（2）和相对于彼此的感兴趣区域（32），而检测单元（6）检测第一检测数据。重建数据确定单元（12）确定第一检测数据之间的重建数据，第二轨迹确定单元（13）根据重建数据确定第二轨迹（32）。之后，当检测单元（6）检测到第二检测数据时，运动产生单元（1,7,8）沿第二轨迹（32）移动辐射源（2）和相对于彼此的感兴趣区域。重建数据和第二检测数据由重建单元（14）用于重建感兴趣区域的图像。

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