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公开(公告)号：US5995580A
公开(公告)日：1999-11-30
申请号：US86151
申请日：1998-05-28
申请人： Stefan Schaller
发明人： Stefan Schaller
CPC分类号： G06T11/006 , A61B6/027 , Y10S378/901
摘要： An exact image reconstruction method for computed tomography allows the reconstruction of a sub-volume of interest in a long subject from cone beam or pyramid beam CT data using a spiral focus path. A two-stage reconstruction process is utilized that, by line integration over the detector, first calculates 3D radon values of a sub-volume of interest defined only for the respective .phi.-plane for each .phi.-plane of a 3D spherical coordinate system. For each .phi.-plane, the sub-volume of interest is limited toward the exterior by the radius of the measurement field and is upwardly and downwardly limited by curved surfaces that arise by the locus of a straight line perpendicular to the .phi.-plane under consideration proceeding to each focus point of a spiral segment.
摘要翻译： 用于计算机断层摄影的精确图像重建方法允许使用螺旋聚焦路径从锥形束或金字塔束CT数据重建长对象中感兴趣的子体积。 利用两阶段重建过程，通过在检测器上的线集成，首先计算仅针对3D球面坐标系的每个phi平面的相应phi平面定义的感兴趣的子体积的3D氡值。 对于每个平面，感兴趣的子体积通过测量场的半径被限制到外部，并且由向下和向下限制的弯曲表面由垂直于所考虑的phi平面的直线的轨迹产生 进入螺旋段的每个焦点。
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12.发明授权Method for production of tomographic slice images of an examination object using at least two X-ray beams at offset angles, and a computed tomography scanner for carrying out this method 有权使用偏移角度的至少两个X射线束生成检查对象的断层图像的方法，以及用于执行该方法的计算机断层摄影扫描器公开(公告)号：US07403588B2
公开(公告)日：2008-07-22
申请号：US11213679
申请日：2005-08-30
申请人： Herbert Bruder , Stefan Schaller
发明人： Herbert Bruder , Stefan Schaller
IPC分类号： H05G1/60
CPC分类号： A61B6/032 , A61B6/4021 , G06T11/005
摘要： A method is disclosed for production of tomographic slice images of an examination object using a computed tomography scanner. In order to scan an examination object, at least two X-ray beams are produced, which each are at offset angles and fan out from a focus to an opposite detector and scan the examination object. The scans at least partially overlap. Detector output data which is emitted from the detector elements is measured together with physical orientation data of the beams and is converted to projection data sets. Slice images are then calculated. In order to calculate the complete slice images, data which is redundant from the measured data of the at least two X-ray beams from overlapping projection intervals is used for each complete slice image. The size of the overlap area of the projection data used from the individual X-ray beams is defined before the calculation of the slice images, in order to vary time resolution and image quality.
摘要翻译： 公开了使用计算机断层摄影扫描仪生产检查对象的断层图像切片图像的方法。 为了扫描检查对象，产生至少两个X射线束，每个X射线束各自以偏移角度从焦点扇出到相对的检测器，并扫描检查对象。 扫描至少部分重叠。 从检测器元件发射的检测器输出数据与波束的物理定向数据一起测量并被转换为投影数据集。 然后计算切片图像。 为了计算完整的切片图像，对于每个完整的切片图像使用从重叠投影间隔的至少两个X射线束的测量数据中冗余的数据。 为了改变时间分辨率和图像质量，在计算切片图像之前定义从各个X射线束使用的投影数据的重叠区域的大小。
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13.发明授权Method and apparatus for processing a computed tomography image of a lung obtained using contrast agent 有权用于使用造影剂获得的肺的计算机断层摄影图像的处理方法和装置公开(公告)号：US07203353B2
公开(公告)日：2007-04-10
申请号：US10075802
申请日：2002-02-14
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , A61B6/027 , Y10S128/922
摘要： In a method and apparatus for image processing proceeding from a computed tomography (CT) image of a lung as an original image that is registered using a contrast agent, pulmonary parenchyma pixels are determined, the pulmonary parenchyma pixels are presented in false colors, and the remaining image regions are presented in the gray scale values of the original image.
摘要翻译： 在从计算机断层摄影（CT）图像进行图像处理的方法和装置中，作为使用造影剂登记的原始图像，确定了肺实质像素，肺实质像素以伪色呈现，并且 剩余图像区域以原始图像的灰度值呈现。
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14.发明申请Patient bed, and method for reproducibly positioning and supporting a patient therewith 失效患者床，以及用于可重复地定位和支撑患者的方法公开(公告)号：US20050251914A1
公开(公告)日：2005-11-17
申请号：US11121574
申请日：2005-05-04
申请人： Stefan Schaller , Jurgen Simon
发明人： Stefan Schaller , Jurgen Simon
CPC分类号： A61B6/0457 , A61B5/0555 , A61B5/103 , A61B5/6892 , A61B2562/0252 , A61B2562/046 , A61G13/12 , A61G13/1235 , A61G13/1245 , Y10S5/935
摘要： A patient bed and a method for reproducibly positioning and supporting a patient in a medical diagnosis or therapy apparatus, such as a CT apparatus or an MRI apparatus, involve supporting at least regions of the patient body in a desired position on the patient bed and using at least one positioning unit to position the regions of the patient body relative to the patient bed. The patient bed has a number of height-adjustable elements arranged like a matrix that are individually adjustable in terms of height.
摘要翻译： 患者床和用于在诸如CT装置或MRI装置的医学诊断或治疗装置中可重复地定位和支撑患者的方法涉及将病人身体的至少区域支撑在患者床上的期望位置并且使用 至少一个定位单元，用于相对于患者床定位患者身体的区域。 患者床具有多个高度可调节的元件，其排列成矩阵，其高度可单独调节。
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15.发明授权Image reconstruction method for a multi-row detector computed tomography apparatus operable in a spiral/helical scan mode 失效用于以螺旋/螺旋扫描模式操作的多行检测器计算机断层摄影装置的图像重建方法
公开(公告)号：US5987157A
公开(公告)日：1999-11-16
申请号：US829955
申请日：1997-04-01
CPC分类号： G06T11/005 , G06T11/006 , A61B6/027 , G06T2211/421 , Y10S378/901
摘要： In an image reconstruction method for a multi-row detector computed tomography apparatus operable in a helical/spiral scan mode, a spiral reconstruction with arbitrary pitch and an improvement of the z resolution with interlaced sampling are achieved by using the known Wang reconstruction algorithm expanded by a new type of interpolation technique wherein direct and complementary projections are employed those beams of either the direct or complementary projection always being selected which exhibit the smallest distance in the z-direction from the relevant voxel to be reconstructed.
摘要翻译： 在以螺旋/螺旋扫描模式操作的多行检测器计算机断层摄影装置的图像重建方法中，通过使用已知的王重建算法来实现具有任意间距的螺旋重建和具有隔行扫描的z分辨率的改善， 一种新型插值技术，其中采用直接和互补投影的那些直接或互补投影总是被选择的那些光束，其在z方向上表现出与要重构的相关体素的最小距离。
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16.发明授权Computed tomography apparatus for conducting spiral scan with the x-ray detector tilted relative to the system axis 失效用X射线检测器进行螺旋扫描的计算机断层摄影装置相对于系统轴线倾斜
公开(公告)号：US5815546A
公开(公告)日：1998-09-29
申请号：US881331
申请日：1997-06-24
CPC分类号： A61B6/032 , A61B6/027 , G01N23/046 , G01N2223/419
摘要： A computed tomography apparatus has a surface X-ray detector composed of detection elements, with all detectors being usable in a spiral scan wherein the detector and an X-ray radiator are rotated around a system axis. The detector has a symmetry axis tilted relative to the system axis by a non-zero acute angle, this angle can be adjustable, including being settable to a value of zero for conducting a conventional spiral scan.
摘要翻译： 计算机断层摄影装置具有由检测元件组成的表面X射线检测器，所有检测器可用于螺旋扫描，其中检测器和X射线辐射器围绕系统轴旋转。 检测器具有相对于系统轴线倾斜非零锐角的对称轴，该角度可以是可调节的，包括可设定为零的值以进行常规的螺旋扫描。
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公开(公告)号：US5796803A
公开(公告)日：1998-08-18
申请号：US850685
申请日：1997-05-02
申请人： Thomas Flohr , Stefan Schaller
发明人： Thomas Flohr , Stefan Schaller
CPC分类号： G06T11/006 , G06T2211/421 , Y10S378/901
摘要： In an approximative image reconstruction method for a computed tomography apparatus with a multi-row detector in spiral operation, a reinterpolation from fan data to parallel data (rebinning) is first carried out independently for all rows of the detector. With the parallel data, an image is reconstructed by having each beam contribute to the image with a weight that depends on the respective distance of the beam to the image plane. Each beam thereby receives a weight that, in general, changes along the beam. By approximating these weighting functions by a short Fourier series, an efficient Fourier reconstruction results.
摘要翻译： 在用于具有螺旋操作的多行检测器的计算机断层摄影装置的近似图像重建方法中，首先对于检测器的所有行独立地执行从风扇数据到并行数据的重新插入（重新归类）。 利用并行数据，通过使每个光束以取决于光束到像平面的相应距离的权重对图像贡献来重建图像。 因此，每个梁由此接收通常沿梁的变化的重量。 通过利用短傅里叶级数对这些加权函数进行近似，得到有效的傅里叶重构。
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18.发明申请Method for production of tomographic slice images of an examination object using at least two X-ray beams at offset angles, and a computed tomography scanner for carrying out this method 有权使用偏移角度的至少两个X射线束生成检查对象的断层图像的方法，以及用于执行该方法的计算机断层摄影扫描器公开(公告)号：US20060045235A1
公开(公告)日：2006-03-02
申请号：US11213679
申请日：2005-08-30
申请人： Herbert Bruder , Stefan Schaller
发明人： Herbert Bruder , Stefan Schaller
CPC分类号： A61B6/032 , A61B6/4021 , G06T11/005
摘要： A method is disclosed for production of tomographic slice images of an examination object using a computed tomography scanner. In order to scan an examination object, at least two X-ray beams are produced, which each are at offset angles and fan out from a focus to an opposite detector and scan the examination object. The scans at least partially overlap. Detector output data which is emitted from the detector elements is measured together with physical orientation data of the beams and is converted to projection data sets. Slice images are then calculated. In order to calculate the complete slice images, data which is redundant from the measured data of the at least two X-ray beams from overlapping projection intervals is used for each complete slice image. The size of the overlap area of the projection data used from the individual X-ray beams is defined before the calculation of the slice images, in order to vary time resolution and image quality.
摘要翻译： 公开了使用计算机断层摄影扫描仪生产检查对象的断层图像切片图像的方法。 为了扫描检查对象，产生至少两个X射线束，每个X射线束各自以偏移角度从焦点扇出到相反的检测器并扫描检查对象。 扫描至少部分重叠。 从检测器元件发射的检测器输出数据与波束的物理定向数据一起测量并被转换为投影数据集。 然后计算切片图像。 为了计算完整的切片图像，对于每个完整的切片图像使用从重叠投影间隔的至少两个X射线束的测量数据中冗余的数据。 为了改变时间分辨率和图像质量，在计算切片图像之前定义从各个X射线束使用的投影数据的重叠区域的大小。
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19.发明申请Method for reconstructing projection data sets for dose-reduced sectional spiral scanning in computed tomography 有权用于在计算机断层扫描中重建用于剂量减小的部分螺旋扫描的投影数据集的方法公开(公告)号：US20050254621A1
公开(公告)日：2005-11-17
申请号：US11116196
申请日：2005-04-28
CPC分类号： G01T1/2985 , A61B6/027 , A61B6/032 , A61B6/542 , A61B6/544 , G06T11/006 , G06T2210/41 , G06T2211/432
摘要： In a method and CT apparatus and software product for reconstructing incomplete projection data sets for dose-reduced sectional spiral scanning along a axis of a patient on a table that is movable in the z direction in the CT apparatus that has a radiation source supplied with tube current so as to emit a beam that strikes a detector system to obtain scanning data from which in an image computing device generates two-dimensional and three-dimensional scanning images of the examination subject, at a pitch greater or equal to one. For z positions having an incomplete projection data set for reconstruction of the image, in a preprocessing step data from another row of this projection and/or data for a previous or subsequent 360° rotation are used to compute a complete projection data set therefor.
摘要翻译： 在一种方法和CT装置和软件产品中，用于在CT装置中沿着z方向移动的桌子上沿着患者的轴线重建用于剂量减小的部分螺旋扫描的不完整投影数据集，所述CT装置具有供给管的辐射源 电流以发射撞击检测器系统的光束，以获得扫描数据，图像计算装置中的扫描数据以大于或等于1的间距产生检查对象的二维和三维扫描图像。 对于具有用于重建图像的不完整投影数据集的z位置，在预处理步骤中，使用来自该投影的另一行的数据和/或用于先前或后续360°旋转的数据来计算用于其的完整投影数据集。
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20.发明申请公开(公告)号：US20050238583A1
公开(公告)日：2005-10-27
申请号：US11072951
申请日：2005-03-03
IPC分类号： A61K49/04
CPC分类号： A61K49/0409
摘要： A contrast agent for medical imaging has a component in the form of a chemical compound of gadolinium that is effective for x-ray computed tomography, that has at least one additive that prevents use of the contrast agent in magnetic resonance tomography.
摘要翻译： 用于医学成像的造影剂具有对于x射线计算机断层摄影有效的钆化学化合物形式的成分，其具有防止在磁共振断层摄影中使用造影剂的至少一种添加剂。
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