专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20080292170A1 Method for scattered radiation correction in an X-ray computed tomography system, and method for generating a tomographic display corrected for scattered radiation, and/or an X-ray computed tomography system 审中-公开
标题翻译：在X射线计算机断层摄影系统中的散射辐射校正方法以及用于产生针对散射辐射校正的断层显像的方法和/或X射线计算机断层摄影系统
公开(公告)号：US20080292170A1
公开(公告)日：2008-11-27
申请号：US12153120
申请日：2008-05-14
申请人： Herbert Bruder , Arkadiusz Polacin , Rainer Raupach , Karl Stierstorfer
发明人： Herbert Bruder , Arkadiusz Polacin , Rainer Raupach , Karl Stierstorfer
IPC分类号： G06K9/00
CPC分类号： A61B6/4014 , A61B6/032
摘要： A method is disclosed for scattered radiation correction in an X-ray computed tomography system having at least two tube-detector systems. It is provided, according to at least one embodiment, to make use of a data record that includes data projections required for the reconstruction and a prescribed number of first scattered radiation projections. Respective scattered radiation components for the scattered radiation correction of all data projections are determined on the basis of the first scattered radiation projections and second scattered radiation projections determined therefrom.
摘要翻译：公开了一种在具有至少两个管检测器系统的X射线计算机断层摄影系统中用于散射辐射校正的方法。根据至少一个实施例，提供使用包括重建所需的数据投影和规定数量的第一散射辐射投影的数据记录。基于从其确定的第一散射辐射投影和第二散射辐射投影来确定用于所有数据投影的散射辐射校正的散射辐射分量。

42. 发明授权

US08768030B2 CT measurement with multiple X-ray sources 有权
标题翻译： CT测量与多个X射线源
公开(公告)号：US08768030B2
公开(公告)日：2014-07-01
申请号：US13020256
申请日：2011-02-03
申请人： Herbert Bruder , Karl Stierstorfer
发明人： Herbert Bruder , Karl Stierstorfer
IPC分类号： G06K9/00 , A61B6/00 , A61B6/03 , G06T11/00
CPC分类号： A61B6/481 , A61B6/032 , A61B6/4014 , A61B6/466 , A61B6/482 , A61B6/504 , A61B6/507 , G06T11/006 , G06T2211/424
摘要： A method is disclosed for reconstructing image data of an examination object from measurement data of a computed tomography system, the examination object having been irradiated simultaneously by a number of X-ray sources while the measurement data was being acquired so that different projections of the examination object associated with the number of X-ray sources were acquired simultaneously for each detector element. In at least one embodiment, different iteration images of the examination object are determined one after the other from the measurement data by way of an iterative algorithm, a computation operation being employed with the iterative algorithm, which is applied to the iteration images and takes the presence of the number of X-ray sources into account.
摘要翻译：公开了一种用于从计算机断层摄影系统的测量数据重建检查对象的图像数据的方法，在获取测量数据的同时由多个X射线源同时照射检查对象，使得检查的不同预测与每个检测器元件同时获取与X射线源数量相关联的物体。在至少一个实施例中，通过迭代算法从测量数据一个接一个地确定检查对象的不同迭代图像，与迭代算法一起使用计算操作，其应用于迭代图像，并采用存在X射线源的数量。

43. 发明授权

US07257186B2 Imaging method for a multi-slice spiral CT scan, and a computer tomography unit for carrying out this method 有权
标题翻译：用于多层螺旋CT扫描的成像方法和用于执行该方法的计算机断层摄影单元
公开(公告)号：US07257186B2
公开(公告)日：2007-08-14
申请号：US10686629
申请日：2003-10-17
申请人： Herbert Bruder , Guenter Lauritsch , Karl Stierstorfer , Kwok Tam
发明人： Herbert Bruder , Guenter Lauritsch , Karl Stierstorfer , Kwok Tam
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/06 , G06T11/006 , G06T2211/421 , Y10S378/901
摘要： An imaging method is disclosed for a multi-slice spiral CT scan. A CT unit is disclosed for carrying out this method. In the method, the filtering may be formed by use of multiple applications of a ramp filter and a masking operation to a projection image in a different sequence. The CT unit may include, for filtering purposes, multiple applications of a ramp filter and a masking operation to a projection image in a different sequence.
摘要翻译：公开了一种用于多层螺旋CT扫描的成像方法。公开了一种用于执行该方法的CT单元。在该方法中，可以通过使用斜坡滤波器的多个应用和对不同序列中的投影图像的掩蔽操作来形成滤波。为了过滤目的，CT单元可以以不同的顺序包括斜坡滤波器和掩蔽操作的多个应用到投影图像。

44. 发明申请

US20060140338A1 Voxel-driven spiral reconstruction for cone-beam computer tomography 失效
标题翻译：用于锥束计算机断层扫描的体素驱动螺旋重建
公开(公告)号：US20060140338A1
公开(公告)日：2006-06-29
申请号：US10544291
申请日：2004-01-28
申请人： Herbert Bruder , Gunter Lauritsch , Karl Stierstorfer
发明人： Herbert Bruder , Gunter Lauritsch , Karl Stierstorfer
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： G06T11/006 , A61B6/027
摘要： A method is disclosed for generating computer tomography images using a 3D image reconstruction method. According to the method, to scan an object to be examined using a cone-shaped bundle of rays originating from a focal point and a planar, preferably multi-line detector for detecting the bundle of rays, the focal point is displaced along a spiral trajectory around the object to be examined. The detector delivers output data corresponding to the detected radiation and image voxels from the scanned examined object are reconstructed from the optionally pre-processed output data, the image voxels reflecting the attenuation coefficients of the respective voxel. Each image voxel is reconstructed separately from projection data, which covers a projection angular range of at least 108° and an approximate weighting is carried out for each voxel considered in order to standardise the projection data using the voxel.
摘要翻译：公开了一种使用3D图像重建方法生成计算机断层图像的方法。根据该方法，为了使用来自焦点的锥形光束和用于检测光束的平面，优选多线检测器来扫描待检查的物体，焦点沿着螺旋轨迹移位围绕要检查的对象。检测器提供与检测到的辐射相对应的输出数据，并且从可选的预处理的输出数据重建来自扫描的被检查物体的图像体素，反映各个体素的衰减系数的图像体素。每个图像体素与投影数据分开重建，投影数据覆盖至少108°的投影角度范围，并且为了使用体素标准化投影数据，为每个体素执行近似权重。

45. 发明申请

US20060018426A1 Imaging tomography apparatus with two acquisition systems in different planes and method for determining position correction values for the planes 有权
公开(公告)号：US20060018426A1
公开(公告)日：2006-01-26
申请号：US11166969
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： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/4014
摘要： In a tomography apparatus and method for obtaining correction values for two measurement planes, wherein the tomography apparatus an acquisition system disposed in a first measurement plane and a second acquisition system disposed in a second measurement plane that are disposed in the azimuthal direction around a common rotation axis, position correction values for both measurement planes are determined for a substantially constant rotation angle speed of the two acquisition systems using measurement values calculated at a rotation angle position of a reference object that can be introduced into both measurement planes. An artifact-free reconstruction of a slice or volume image can be made using the position correction values.

46. 发明申请

US20050276372A1 Method for optimizing the display of flat slices of a cyclically and complexly moving examination object from detector measured data of a tomography unit 失效
标题翻译：用于优化循环和复杂运动的检查对象的平片显示的方法，用于从检测器的断层摄影单元的测量数据
公开(公告)号：US20050276372A1
公开(公告)日：2005-12-15
申请号：US11147186
申请日：2005-06-08
申请人： Herbert Bruder , Karl Stierstorfer
发明人： Herbert Bruder , Karl Stierstorfer
IPC分类号： A61B6/03 , A61B6/00 , G06T1/00
CPC分类号： A61B6/032 , A61B6/027
摘要： A method is for generating tomograms of a cyclically and complexly moving examination object using a tomography unit that reconstructs tomograms in at least one slice plane from detector output data. At least two tomograms from different phases of the movement cycle of the examination object are reconstructed in the region of at least one slice plane. The tomograms are subdivided automatically into subregions with good and bad image quality, and at least one complete tomogram is assembled from subregions with relatively good image quality per slice plane.
摘要翻译：一种用于使用断层摄影单元产生循环和复杂移动的检查对象的断层图像的方法，所述断层摄影单元从检测器输出数据重建至少一个切片平面中的断层图像。在至少一个切片平面的区域中重建来自检查对象的移动周期的不同阶段的至少两个断层图像。断层图像被自动细分为具有良好和不良图像质量的子区域，并且至少一个完整的断层图像从具有相对较好的每个切片平面图像质量的子区域组装。

47. 发明授权

US07835485B2 Method for scattered radiation correction in x-ray imaging devices 有权
标题翻译： x射线成像装置散射辐射校正方法
公开(公告)号：US07835485B2
公开(公告)日：2010-11-16
申请号：US12076040
申请日：2008-03-13
申请人： Herbert Bruder , Martin Petersilka , Karl Stierstorfer
发明人： Herbert Bruder , Martin Petersilka , Karl Stierstorfer
IPC分类号： A61B6/00
CPC分类号： A61B6/4014 , A61B6/032 , A61B6/583
摘要： A method is disclosed for scattered radiation correction in x-ray imaging devices having a number of x-ray sources that can be moved around an examination object in at least one scanning plane during a measurement pass. During the measurement pass, a number of x-ray projections are recorded at different projection angles with simultaneous use of the x-ray sources. In at least one embodiment of the present method, parameters characterizing an outer object contour are determined in the scanning plane from measured data of different x-ray projections. In at least one embodiment, on the basis of one object contour section whose characterizing parameters have been determined from x-ray projections that lie in front of and/or behind the respective x-ray projection by a defined projection angle range, for each x-ray projection an assigned scattered radiation distribution is then retrieved or is interpolated in a database from scattered radiation distributions for object contour sections with similar characterizing parameters. This scattered radiation distribution is then used for the correction of the measured data for the respective x-ray projection. In at least one embodiment, the method enables scattered radiation correction in conjunction with operation of the x-ray sources.
摘要翻译：公开了一种用于在X射线成像装置中的散射辐射校正的方法，其具有可在测量通过期间在至少一个扫描平面中围绕检查对象移动的多个x射线源。在测量通过期间，以不同的投影角记录多个X射线投射，同时使用x射线源。在本方法的至少一个实施例中，表征外部对象轮廓的参数在扫描平面中从不同X射线投影的测量数据确定。在至少一个实施例中，基于一个对象轮廓部分，其特征参数已经由位于相应x射线投影前面和/或后面的X射线投影确定了一个限定的投影角度范围，对于每个x 射线投影然后检索分配的散射辐射分布，或者从数据库中插入具有相似特征参数的物体轮廓部分的散射辐射分布。然后将这种散射的辐射分布用于校正各个X射线投影的测量数据。在至少一个实施例中，该方法结合X射线源的操作实现散射辐射校正。

48. 发明申请

US20100189213A1 CORRECTING TRANSVERSE SCATTERING IN A MULTI-EMITTER CT SCANNER 有权
标题翻译：在多发射CT扫描仪中校正横向扫描
公开(公告)号：US20100189213A1
公开(公告)日：2010-07-29
申请号：US12753960
申请日：2010-04-05
申请人： Herbert Bruder , Rainer Raupach , Karl Stierstorfer
发明人： Herbert Bruder , Rainer Raupach , Karl Stierstorfer
IPC分类号： H05G1/60 , A61B6/03
CPC分类号： G01N23/046 , A61B6/032 , A61B6/4085 , A61B6/4241 , A61B6/482 , A61B6/5282 , G01N2223/206 , G01N2223/419
摘要： A multi-emitter computed tomography scanner is disclosed, including a plurality of x-ray emitter/detector arrangement pairs arranged offset at an angle to one another. In at least one embodiment, the detector arrangements of the pairs are designed to be energy selective.
摘要翻译：公开了一种多发射体计算机断层摄影扫描器，包括以彼此成角度偏移地设置的多个x射线发射器/检测器布置对。在至少一个实施例中，对的检测器布置被设计为能量选择性的。

49. 发明授权

US07529335B2 Voxel-driven spiral reconstruction for cone-beam computer tomography 失效
标题翻译：用于锥束计算机断层扫描的体素驱动螺旋重建
公开(公告)号：US07529335B2
公开(公告)日：2009-05-05
申请号：US10544291
申请日：2004-01-28
申请人： Herbert Bruder , Günter Lauritsch , Karl Stierstorfer
发明人： Herbert Bruder , Günter Lauritsch , Karl Stierstorfer
IPC分类号： A61B6/00
CPC分类号： G06T11/006 , A61B6/027
摘要： A method is disclosed for generating computer tomography images using a 3D image reconstruction method. According to the method, to scan an object to be examined using a cone-shaped bundle of rays originating from a focal point and a planar, preferably multi-line detector for detecting the bundle of rays, the focal point is displaced along a spiral trajectory around the object to be examined. The detector delivers output data corresponding to the detected radiation and image voxels from the scanned examined object are reconstructed from the optionally pre-processed output data, the image voxels reflecting the attenuation coefficients of the respective voxel. Each image voxel is reconstructed separately from projection data, which covers a projection angular range of at least 108° and an approximate weighting is carried out for each voxel considered in order to standardize the projection data using the voxel.
摘要翻译：公开了一种使用3D图像重建方法生成计算机断层图像的方法。根据该方法，为了使用来自焦点的锥形光束和用于检测光束的平面，优选多线检测器来扫描待检查的物体，焦点沿着螺旋轨迹移位围绕要检查的对象。检测器提供与检测到的辐射相对应的输出数据，并且从可选的预处理的输出数据重建来自扫描的被检查物体的图像体素，反映各个体素的衰减系数的图像体素。每个图像体素与投影数据分开重建，投影数据覆盖至少108°的投影角度范围，并且为了使用体素标准化投影数据，为每个体素执行近似权重。

50. 发明授权

US07443945B2 Method for scattered radiation correction in the case of an X-ray CT, and X-ray CT for applying this method 有权
标题翻译：在X射线CT的情况下用于散射辐射校正的方法，以及用于应用该方法的X射线CT
公开(公告)号：US07443945B2
公开(公告)日：2008-10-28
申请号：US11790709
申请日：2007-04-27
申请人： Herbert Bruder , Karl Stierstorfer
发明人： Herbert Bruder , Karl Stierstorfer
IPC分类号： A61B6/00
CPC分类号： A61B6/5282 , A61B6/032 , A61B6/4014
摘要： It is proposed to estimate the scattered radiation on the basis of a sinogram, which is measured in any case. In at least one embodiment, a method includes determining the potential scattering site for each measuring beam from the object tangents in the sinogram and calculating the scattered intensity from the primary radiation striking the scattering site and the angle ratios of scattering beam, object tangent and measuring beam. Also proposed, in at least one embodiment, is an X-ray CT having at least bifocal detector systems and a control and computer unit for producing tomographic pictures, the control and arithmetic unit of which contains a program code that, upon being executed, carries out the method.
摘要翻译：建议基于正弦图估计散射辐射，这是在任何情况下测量的。在至少一个实施例中，一种方法包括从正弦图中的物体切线确定每个测量光束的潜在散射位置，并计算来自发射散射位置的主要辐射的散射强度和散射光束的角度比，物体切线和测量光束。在至少一个实施例中还提出了具有至少双焦点检测器系统的X射线CT和用于产生断层图像的控制和计算机单元，其控制和运算单元包含程序代码，所述程序代码在被执行时携带出来的方法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式