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61. 发明授权

US07263157B2 Imaging tomography apparatus with two acquisition systems, and method for determining their system angles 有权
标题翻译：具有两个采集系统的成像断层摄影装置，以及用于确定其系统角度的方法
公开(公告)号：US07263157B2
公开(公告)日：2007-08-28
申请号：US11167024
申请日：2005-06-24
申请人： Herbert Bruder , Martin Petersilka , Karl Stierstorfer
发明人： Herbert Bruder , Martin Petersilka , Karl Stierstorfer
IPC分类号： G01N23/083
CPC分类号： A61B6/032 , A61B6/4014
摘要： In a tomography apparatus and operating method, at least two acquisition systems are respectively each disposed in the azimuthal direction at respective specific system angles around a common rotation axis. Both system angles can be determined for a substantially constant rotation angle speed of the two acquisition systems on the basis of measurement values, which are calculated at a rotation angle position of a reference object that can be introduced into both measurement planes. The tomography apparatus in this manner enables artifact-free reconstruction of a slice or volume image using the system angles determined in this manner.
摘要翻译：在断层摄影装置和操作方法中，至少两个采集系统分别以围绕公共旋转轴线的各个特定系统角度在方位角方向上设置。可以基于在可以被引入到两个测量平面中的参考对象的旋转角度位置处计算的测量值来确定两个采集系统的基本恒定的旋转角速度的两个系统角度。以这种方式的断层摄影装置使用以这种方式确定的系统角度能够进行切片或体积图像的无伪影重建。

62. 发明申请

US20070086561A1 Method for scattered radiation correction of a CT system 有权
标题翻译： CT系统的散射辐射矫正方法
公开(公告)号：US20070086561A1
公开(公告)日：2007-04-19
申请号：US11543836
申请日：2006-10-06
申请人： Herbert Bruder , Martin Petersilka , Rainer Raupach , Karl Stierstorfer
发明人： Herbert Bruder , Martin Petersilka , Rainer Raupach , Karl Stierstorfer
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G03B42/02 , A61B6/032 , A61B6/4014 , A61B6/5282 , A61B6/583
摘要： A method for scattered radiation correction of a CT system, including at least two focus/detector systems operated angularly offset from one another, is disclosed. In the method, at at least one phantom, similar to the examined object at least in a subregion, for at least one of the focus/detector systems, the scattered radiation intensity occurring is determined in the detector of a focus/detector system during the operation of the at least one focus of at least one other focus/detector system. Further, the spatial distribution thereof is stored for a number of angles of rotation of the focus/detector systems. During scanning of the object, the scattered radiation intensities, determined with the aid of a similar phantom that originate from the at least one other focus/detector system, are subtracted from the measured intensities of the first focus/detector system while taking account of the spatial orientation of the focus/detector systems and the beam respectively considered. Finally, absorption values are calculated with the aid of the intensity values thus corrected, and CT pictures or CT volume data are thereby reconstructed.
摘要翻译：公开了一种用于CT系统的散射辐射校正的方法，其包括彼此角度偏移地操作的至少两个焦点/检测器系统。在该方法中，至少在至少一个子区域中的被检查对象的至少一个体模，对于焦点/检测器系统中的至少一个，在焦点/检测器系统的检测器期间确定发生的散射辐射强度操作至少一个其它焦点/检测器系统的至少一个焦点。此外，其空间分布被存储为聚焦/检测器系统的多个旋转角度。在扫描对象期间，借助于来自至少一个其它焦点/检测器系统的类似幻影确定的散射辐射强度从所测量的第一焦点/检测器系统的强度中减去，同时考虑到分别考虑了焦点/探测器系统和光束的空间取向。最后，借助于如此校正的强度值来计算吸收值，由此重建CT图像或CT体积数据。

63. 发明申请

US20070023713A1 Method for focus adjustment in a CT apparatus 失效
公开(公告)号：US20070023713A1
公开(公告)日：2007-02-01
申请号：US11482263
申请日：2006-07-06
申请人： Herbert Bruder , Martin Petersilka , Karl Stierstorfer
发明人： Herbert Bruder , Martin Petersilka , Karl Stierstorfer
IPC分类号： H01J5/18
CPC分类号： G01T1/2985 , A61B6/583
摘要： In a method for non-iterative focus adjustment in a CT apparatus the position of the center ray with regard to the movement direction of the focus and the correct phase between the detector sampling frequency and the focus springing frequency are calculated with a minimal number of sinogram acquisitions and is adjusted without iterative steps, corresponding to predetermined values.

64. 发明授权

US07039153B2 Imaging tomography device with at least two beam detector systems, and method to operate such a tomography device 失效
标题翻译：具有至少两个光束检测器系统的成像断层摄影装置以及操作这种断层摄影装置的方法
公开(公告)号：US07039153B2
公开(公告)日：2006-05-02
申请号：US10763116
申请日：2004-01-22
申请人： Herbert Bruder , Arne Hoelzel , Karl Stierstorfer
发明人： Herbert Bruder , Arne Hoelzel , Karl Stierstorfer
IPC分类号： G01N23/00
CPC分类号： A61B6/032 , A61B6/4014 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： An imaging tomography apparatus, in particular x-ray computed tomography apparatus, for examining an examination subject has at least two acquisition systems, each having a radiator and a data acquisition unit to detect the radiation originating from the associated radiator. The acquisition systems are capable of rotating around a common rotation axis with a constant angular separation in the azimuthal direction. Radiation from only one of the radiators is permitted to reach the examination subject during the rotation of the acquisition systems. Signal contributions by the x-ray tubes not supplying this data acquisition unit with primary radiation arrive are prevented, the projection data set generated by one of the data acquisition units.
摘要翻译：用于检查检查对象的成像断层摄影装置，特别是X射线计算机断层摄影装置具有至少两个采集系统，每个采集系统具有辐射器和用于检测源自相关联的散热器的辐射的数据获取单元。采集系统能够在方位方向上以恒定的角度间隔围绕公共旋转轴线旋转。只有一个散热器的辐射才能在采集系统旋转期间到达检测对象。由数据采集单元之一产生的投影数据集被防止由不向该数据采集单元提供主辐射到达的X射线管的信号贡献。

65. 发明申请

US20100195787A1 METHOD AND DEVICE FOR GENERATING A CT IMAGE WITH A HIGH TIME RESOLUTION 有权
标题翻译：用于产生具有高时间分辨率的CT图像的方法和装置
公开(公告)号：US20100195787A1
公开(公告)日：2010-08-05
申请号：US12695256
申请日：2010-01-28
申请人： Thomas Flohr , Rainer Raupach , Karl Stierstorfer
发明人： Thomas Flohr , Rainer Raupach , Karl Stierstorfer
IPC分类号： H05G1/60 , G06K9/00
CPC分类号： A61B6/482 , A61B6/032 , A61B6/4014 , A61B6/405 , A61B6/507 , A61B6/541
摘要： A method and a device are disclosed for generating a CT image with a high time resolution using a computed tomography scanner which has at least two recording systems which are operated at different X-ray energy spectra. In at least one embodiment of the process, CT images are firstly reconstructed in each case from a semi-rotation with the two recording systems, with irradiated lengths of the contrast agent-enriched structures and the soft tissue being calculated therefrom. Subsequently, a common X-ray energy is assumed and artificial measurement data records are calculated therefor, using the knowledge of the irradiated lengths for both recording systems at the same common X-ray energy. The artificial measurement data of respectively a quarter-rotation per recording system is then used to calculate the final CT image with a high time resolution. The method affords the use of dual-energy scans without losing the high time resolution available in dual-source systems.
摘要翻译：公开了一种用于使用计算机断层摄影扫描仪生成具有高时间分辨率的CT图像的方法和装置，该计算机断层摄影扫描仪具有在不同X射线能谱下操作的至少两个记录系统。在该过程的至少一个实施例中，首先在两个记录系统的半旋转中重建CT图像，其中计算富含造影剂的结构和软组织的照射长度。随后，假设使用常见的X射线能量，并且使用相同共同的X射线能量对两个记录系统的照射长度的知识来计算人造测量数据记录。然后使用每个记录系统的四分之一旋转的人造测量数据来计算具有高时间分辨率的最终CT图像。该方法提供双能量扫描的使用，而不会损失双源系统中可用的高时间分辨率。

66. 发明申请

US20120213424A1 METHOD AND COMPUTER SYSTEM FOR SCATTERED BEAM CORRECTION IN A MULTI-SOURCE CT 有权
标题翻译：用于多源CT中散射光束校正的方法和计算机系统
公开(公告)号：US20120213424A1
公开(公告)日：2012-08-23
申请号：US13401879
申请日：2012-02-22
申请人： Thomas Flohr , Martin Petersilka , Karl Stierstorfer
发明人： Thomas Flohr , Martin Petersilka , Karl Stierstorfer
IPC分类号： G06K9/00 , G06F7/60 , A61B6/03
CPC分类号： G01N23/046 , A61B6/032 , A61B6/06 , A61B6/4014 , A61B6/4291 , A61B6/5205 , A61B6/5282 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/424
摘要： A method and a computer system are disclosed for scattered beam correction in a CT examination of an object in a multi source CT. In at least one embodiment, the method includes generating original projection data records; reconstruction of the object with the original projection data records of at least one detector; determining the scattered radiation generated by each emitter exclusively in the direction of the original beams of the at least one other emitter relative to its opposing detector; generating corrected projection data records by removing the calculated scattered radiation from the original projection data records; reconstruction of the object with the corrected projection data records, and implementing a further iteration of the method when determining the scattered radiation or issuing the reconstruction result if at least one predetermined abort criterion applies.
摘要翻译：公开了一种用于在多源CT中的对象的CT检查中的散射束校正的方法和计算机系统。在至少一个实施例中，该方法包括生成原始投影数据记录; 用至少一个检测器的原始投影数据记录重建对象; 确定由每个发射器产生的散射辐射源专用于至少一个其它发射器的原始光束相对于其相对的检测器的方向; 通过从原始投影数据记录中去除计算的散射辐射来产生校正的投影数据记录; 使用校正的投影数据记录重建对象，并且如果应用至少一个预定中止标准，则在确定散射辐射或发出重建结果时，执行该方法的进一步迭代。

67. 发明申请

US20060280281A1 Method for calculating absorber-specific weighting coefficients and method for improving a contrast-to-noise ratio, dependent on an absorber, in an x-ray image, produced by an x-ray machine, of an object to be examined 审中-公开
标题翻译：用于计算吸收体专用加权系数的方法和方法，用于提高取决于由x射线机产生的x射线图像中的待检测物体的X射线图像中的吸收体的对比度噪声比
公开(公告)号：US20060280281A1
公开(公告)日：2006-12-14
申请号：US11451581
申请日：2006-06-13
申请人： Thomas Flohr , Michael Grasruck , Karl Stierstorfer
发明人： Thomas Flohr , Michael Grasruck , Karl Stierstorfer
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/482 , A61B6/4241 , A61B6/504 , A61B6/505
摘要： A method is disclosed for calculating absorber-specific weighting coefficients and a method is disclosed for improving a contrast-to-noise ratio, dependent on an absorber, in an x-ray image of an object to be examined produced by an x-ray machine. A weighted summation of detector output signals from different energy windows of an energy-selector detector are used to improve the contrast-to-noise ratio as a function of the absorber.
摘要翻译：公开了一种用于计算吸收体特定加权系数的方法，并且公开了一种用于在X射线机产生的待检测物体的X射线图像中提高取决于吸收体的对比度噪声比的方法。使用来自能量选择器检测器的不同能量窗口的检测器输出信号的加权求和来提高作为吸收器的函数的对比噪声比。

68. 发明授权

US08744161B2 Method and computer system for scattered beam correction in a multi-source CT 有权
标题翻译：多源CT中散射束校正的方法和计算机系统
公开(公告)号：US08744161B2
公开(公告)日：2014-06-03
申请号：US13401879
申请日：2012-02-22
申请人： Thomas Flohr , Martin Petersilka , Karl Stierstorfer
发明人： Thomas Flohr , Martin Petersilka , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： G01N23/046 , A61B6/032 , A61B6/06 , A61B6/4014 , A61B6/4291 , A61B6/5205 , A61B6/5282 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/424
摘要： A method and a computer system are disclosed for scattered beam correction in a CT examination of an object in a multi source CT. In at least one embodiment, the method includes generating original projection data records; reconstruction of the object with the original projection data records of at least one detector; determining the scattered radiation generated by each emitter exclusively in the direction of the original beams of the at least one other emitter relative to its opposing detector; generating corrected projection data records by removing the calculated scattered radiation from the original projection data records; reconstruction of the object with the corrected projection data records, and implementing a further iteration of the method when determining the scattered radiation or issuing the reconstruction result if at least one predetermined abort criterion applies.
摘要翻译：公开了一种用于在多源CT中的对象的CT检查中的散射束校正的方法和计算机系统。在至少一个实施例中，该方法包括生成原始投影数据记录; 用至少一个检测器的原始投影数据记录重建对象; 确定由每个发射器产生的散射辐射源专用于至少一个其它发射器的原始光束相对于其相对的检测器的方向; 通过从原始投影数据记录中去除计算的散射辐射来产生校正的投影数据记录; 使用校正的投影数据记录重建对象，并且如果应用至少一个预定中止标准，则在确定散射辐射或发出重建结果时，执行该方法的进一步迭代。

69. 发明授权

US07924970B2 Method and device for generating a CT image with a high time resolution 有权
标题翻译：用于生成具有高时间分辨率的CT图像的方法和装置
公开(公告)号：US07924970B2
公开(公告)日：2011-04-12
申请号：US12695256
申请日：2010-01-28
申请人： Thomas Flohr , Rainer Raupach , Karl Stierstorfer
发明人： Thomas Flohr , Rainer Raupach , Karl Stierstorfer
IPC分类号： A61B6/00
CPC分类号： A61B6/482 , A61B6/032 , A61B6/4014 , A61B6/405 , A61B6/507 , A61B6/541
摘要： A method and a device are disclosed for generating a CT image with a high time resolution using a computed tomography scanner which has at least two recording systems which are operated at different X-ray energy spectra. In at least one embodiment of the process, CT images are firstly reconstructed in each case from a semi-rotation with the two recording systems, with irradiated lengths of the contrast agent-enriched structures and the soft tissue being calculated therefrom. Subsequently, a common X-ray energy is assumed and artificial measurement data records are calculated therefor, using the knowledge of the irradiated lengths for both recording systems at the same common X-ray energy. The artificial measurement data of respectively a quarter-rotation per recording system is then used to calculate the final CT image with a high time resolution. The method affords the use of dual-energy scans without losing the high time resolution available in dual-source systems.
摘要翻译：公开了一种用于使用计算机断层摄影扫描仪生成具有高时间分辨率的CT图像的方法和装置，该计算机断层摄影扫描仪具有在不同X射线能谱下操作的至少两个记录系统。在该过程的至少一个实施例中，首先在两个记录系统的半旋转中重建CT图像，其中计算富含造影剂的结构和软组织的照射长度。随后，假设使用常见的X射线能量，并且使用相同共同的X射线能量对两个记录系统的照射长度的知识来计算人造测量数据记录。然后使用每个记录系统的四分之一旋转的人造测量数据来计算具有高时间分辨率的最终CT图像。该方法提供双能量扫描的使用，而不会损失双源系统中可用的高时间分辨率。

70. 发明授权

US07583785B2 Detecting apparatus and method for detecting an object by means of a projection through the object by means of x-rays, and a contrast—and noise-optimized quantum counting detector 有权
标题翻译：用于通过X射线通过物体的投影来检测物体的检测装置和方法，以及对比度和噪声优化的量子计数检测器
公开(公告)号：US07583785B2
公开(公告)日：2009-09-01
申请号：US11806160
申请日：2007-05-30
申请人： Thomas Flohr , Karl Stierstorfer
发明人： Thomas Flohr , Karl Stierstorfer
IPC分类号： G01N23/00
CPC分类号： A61B6/466 , A61B6/032 , G01T1/2928
摘要： A detecting apparatus is disclosed for detecting an object by way of a projection through the object onto a detection plane. In at least one embodiment, the detecting apparatus has a transmitter that is designed to emit quanta. In at least one embodiment the detection apparatus also has a detector, arranged in a detection plane, for detecting the emitted quanta, the detector being designed and arranged to generate at least one detector signal at least partially representing the object in a projection, as a function of the quanta received through the object. In at least one embodiment, the detecting apparatus is designed to generate as a function of the generated detector signal for a detected quantum a quantum signal that represents the quantum energy of one detected quantum. Finally, in at least one embodiment the detecting apparatus is designed to generate a sum signal that corresponds to a sum of the quantum energies of the quantum energies represented by the quantum signals.
摘要翻译：公开了一种用于通过将物体投影到检测平面上来检测物体的检测装置。在至少一个实施例中，检测装置具有设计成发射量子的发射器。在至少一个实施例中，检测装置还具有布置在检测平面中的检测器，用于检测发射的量子，检测器被设计和布置成产生至少部分地表示投影物体的至少一个检测器信号，如通过对象接收的量子的函数。在至少一个实施例中，检测装置被设计成根据产生的检测器信号产生检测量子，表示一个检测量子的量子能量的量子信号。最后，在至少一个实施例中，检测装置被设计为产生对应于由量子信号表示的量子能量的量子能量之和的和信号。

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