公开(公告)号：US20100080357A1

公开(公告)日：2010-04-01

申请号：US12243610

申请日：2008-10-01

申请人： Jason Stuart Katcha ,  Thomas Louis Toth ,  Jiang Hsieh ,  Carey Shawn Rogers ,  John Scott Price ,  Baojun Li ,  Yun Zou

发明人： Jason Stuart Katcha ,  Thomas Louis Toth ,  Jiang Hsieh ,  Carey Shawn Rogers ,  John Scott Price ,  Baojun Li ,  Yun Zou

IPC分类号： H01J35/10 ,  H01J35/08

CPC分类号： H01J35/10 ,  H01J2235/068 ,  H01J2235/086

摘要： An x-ray tube is disclosed herein. The x-ray tube includes an anode assembly adapted to rotate generally about a rotational axis. The anode assembly includes a first target surface at least partially disposed at a first angle greater than 70 degrees with respect to the rotational axis and a second target surface at least partially disposed at a second angle greater than 70 degrees with respect to the rotational axis. The first target surface is adapted to emit a first x-ray beam and the second target surface is adapted to emit a second x-ray beam. A CT system is also disclosed.

摘要翻译： 本文公开了一种X射线管。 X射线管包括适于大致围绕旋转轴线旋转的阳极组件。 阳极组件包括至少部分地以相对于旋转轴线大于70度的第一角度设置的第一目标表面和相对于旋转轴线以大于70度的第二角度至少部分地设置的第二目标表面。 第一目标表面适于发射第一x射线束，并且第二目标表面适于发射第二x射线束。 还公开了一种CT系统。

公开(公告)号：US07649973B1

公开(公告)日：2010-01-19

申请号：US12244569

申请日：2008-10-02

申请人： Baojun Li ,  Thomas Louis Toth ,  Jiang Hsieh

发明人： Baojun Li ,  Thomas Louis Toth ,  Jiang Hsieh

IPC分类号： G01N23/083

CPC分类号： G01N23/04 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/482 ,  A61B6/542 ,  G01N2223/313 ,  G01T1/2985

摘要： An imaging system includes at least two x-ray sources, an x-ray detector assembly and an attenuation filter. The at least two x-ray sources are displaced along a z-axis and configured to alternately emit x-ray beams. The x-ray detector assembly is configured to detect the x-ray beams. The attenuation filter is mounted proximate the at least two x-ray sources and is configured to provide different amounts of x-ray attenuation to the x-ray beams along the z-axis.

摘要翻译： 成像系统包括至少两个X射线源，X射线检测器组件和衰减滤波器。 所述至少两个x射线源沿Z轴移位并被配置为交替地发射x射线束。 x射线检测器组件被配置为检测x射线束。 所述衰减滤波器安装在所述至少两个x射线源附近，并且被配置为沿着z轴向x射线束提供不同量的X射线衰减。

公开(公告)号：US06977984B2

公开(公告)日：2005-12-20

申请号：US10680688

申请日：2003-10-07

申请人： Jiang Hsieh ,  Eugene Clifford Williams ,  Thomas Louis Toth

发明人： Jiang Hsieh ,  Eugene Clifford Williams ,  Thomas Louis Toth

IPC分类号： A61B5/055 ,  A61B6/03 ,  G01N23/04 ,  G06T1/00

CPC分类号： A61B6/032 ,  A61B5/055 ,  A61B6/027 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  Y10S378/901

摘要： The present invention provides a method for producing images of an object. The method includes dynamically helically scanning an object on a moving table utilizing a scanning imaging system. During the scan, projection views of the object are acquired and stored together with corresponding table locations. A plane for reconstruction of an image of the object is selected. The stored table locations are used to determine geometric variables applicable to the stored projection views; and the stored projection views are filtered and backprojected utilizing the geometrical variables to reconstruct an image of the object at the reconstruction plane.

摘要翻译： 本发明提供了一种用于产生对象的图像的方法。 该方法包括利用扫描成像系统动态地螺旋扫描移动台上的物体。 在扫描期间，获取对象的投影视图并与对应的表位置一起存储。 选择用于重建对象的图像的平面。 存储的表位置用于确定适用于存储的投影视图的几何变量; 并且利用几何变量对所存储的投影视图进行滤波和反投影，以重构在重构平面处的对象的图像。

公开(公告)号：US08131042B2

公开(公告)日：2012-03-06

申请号：US12028543

申请日：2008-02-08

申请人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

发明人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

摘要： A method for reconstructing an image using an imaging apparatus that includes a radiation source, a detector array, and a computer. The method includes performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data, and reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance.

摘要翻译： 一种使用包括辐射源，检测器阵列和计算机的成像装置重建图像的方法。 该方法包括使用辐射源和检测器阵列以选定的螺距进行物体的螺旋扫描以获得图像数据，以及使用被编程为执行具有射线方向的混合锥形束图像重建的计算机来重建物体的图像 3D加权，其中加权取决于螺距和z距离。

公开(公告)号：US20090202126A1

公开(公告)日：2009-08-13

申请号：US12028543

申请日：2008-02-08

申请人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

发明人： Xiangyang Tang ,  Jiang Hsieh ,  Fang Dong ,  Jiahua Fan ,  Thomas Louis Toth

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/027 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

摘要： A method for reconstructing an image using an imaging apparatus that includes a radiation source, a detector array, and a computer. The method includes performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data, and reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance.

摘要翻译： 一种使用包括辐射源，检测器阵列和计算机的成像装置重建图像的方法。 该方法包括使用辐射源和检测器阵列以选定的螺距进行物体的螺旋扫描以获得图像数据，以及使用被编程为执行具有射线方向的混合锥形束图像重建的计算机来重建物体的图像 3D加权，其中加权取决于螺距和z距离。

公开(公告)号：US20080095314A1

公开(公告)日：2008-04-24

申请号：US11580489

申请日：2006-10-13

申请人： Jason Stuart Katcha ,  Bruce Matthew Dunham ,  Robert Senzig ,  Jonathan Richard Schmidt ,  Thomas Louis Toth ,  David Michael Hoffman ,  Phil E. Pearson ,  Jiang Hsieh

发明人： Jason Stuart Katcha ,  Bruce Matthew Dunham ,  Robert Senzig ,  Jonathan Richard Schmidt ,  Thomas Louis Toth ,  David Michael Hoffman ,  Phil E. Pearson ,  Jiang Hsieh

IPC分类号： H05G1/60 ,  H05G1/10 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： A61B6/4014 ,  A61B6/032 ,  A61B6/037 ,  A61B6/56

摘要： Methods and apparatus for an imaging system are provided. The imaging system includes a gantry having a stationary member coupled to a rotating member. The rotating member has an opened area proximate an axis about which the rotating member rotates. An x-ray source provided on the rotating member. An x-ray detector may be disposed on the rotating member and configured to receive x-rays from the x-ray source. A rotary transformer having circumferentially disposed primary and secondary windings may form part of a contactless power transfer system that rotates the rotatable portion of the gantry at very high speeds, the primary winding being disposed on the stationary member and the secondary winding being disposed on the rotating member.

摘要翻译： 提供了一种用于成像系统的方法和装置。 成像系统包括具有联接到旋转构件的固定构件的台架。 旋转构件具有靠近旋转构件旋转的轴线的开口区域。 设置在旋转构件上的x射线源。 X射线检测器可以设置在旋转构件上并被配置为从x射线源接收x射线。 具有周向布置的初级和次级绕组的旋转变压器可以形成非接触式动力传递系统的一部分，其以非常高的速度使机架的可旋转部分旋转，初级绕组设置在固定构件上，次级绕组设置在旋转 会员。

公开(公告)号：US06829323B2

公开(公告)日：2004-12-07

申请号：US10064586

申请日：2002-07-29

申请人： Thomas Louis Toth ,  Jiang Hsieh ,  Jianying Li ,  Scott Matt McOlash

发明人： Thomas Louis Toth ,  Jiang Hsieh ,  Jianying Li ,  Scott Matt McOlash

IPC分类号： A61B603

CPC分类号： G06T11/008 ,  A61B6/00 ,  A61B6/583 ,  Y10S378/901

摘要： A method for generating a simulated patient image is disclosed. In an exemplary embodiment, the method includes obtaining image data from an actual patient image and generating simulated noise data. The image data is then combined with the simulated noise data to create the simulated patient image. In one aspect, scan data from the actual patient image is combined with the generated simulated noise data to create pre-image data, and the pre-image data is then reconstructed to create simulated image data. In another aspect, a set of individual noise pattern images for each a plurality of phantom objects is created. At least one of the individual noise pattern images is selected for combination with the actual patient image. The at least one selected individual noise pattern image is then combined with the actual patient image, thereby creating the simulated patient image.

摘要翻译： 公开了一种用于产生模拟患者图像的方法。 在示例性实施例中，该方法包括从实际患者图像获得图像数据并产生模拟噪声数据。 然后将图像数据与模拟的噪声数据组合以产生模拟的患者图像。 在一个方面，将来自实际患者图像的扫描数据与生成的模拟噪声数据组合以产生预图像数据，然后重建预图像数据以产生模拟图像数据。 在另一方面，创建用于每个多个幻像物体的一组单独的噪声图案图像。 选择单独噪声图案图像中的至少一个以与实际的患者图像组合。 然后将至少一个所选择的单独噪声图案图像与实际患者图像组合，从而创建模拟的患者图像。

公开(公告)号：US07593502B2

公开(公告)日：2009-09-22

申请号：US11580489

申请日：2006-10-13

申请人： Jason Stuart Katcha ,  Bruce Matthew Dunham ,  Robert Senzig ,  Jonathan Richard Schmidt ,  Thomas Louis Toth ,  David Michael Hoffman ,  Phil E. Pearson, Jr. ,  Jiang Hsieh

发明人： Jason Stuart Katcha ,  Bruce Matthew Dunham ,  Robert Senzig ,  Jonathan Richard Schmidt ,  Thomas Louis Toth ,  David Michael Hoffman ,  Phil E. Pearson, Jr. ,  Jiang Hsieh

IPC分类号： A61B6/03

CPC分类号： A61B6/4014 ,  A61B6/032 ,  A61B6/037 ,  A61B6/56

摘要： Methods and apparatus for an imaging system are provided. The imaging system includes a gantry having a stationary member coupled to a rotating member. The rotating member has an opened area proximate an axis about which the rotating member rotates. An x-ray source provided on the rotating member. An x-ray detector may be disposed on the rotating member and configured to receive x-rays from the x-ray source. A rotary transformer having circumferentially disposed primary and secondary windings may form part of a contactless power transfer system that rotates the rotatable portion of the gantry at very high speeds, the primary winding being disposed on the stationary member and the secondary winding being disposed on the rotating member.

摘要翻译： 提供了一种用于成像系统的方法和装置。 成像系统包括具有联接到旋转构件的固定构件的台架。 旋转构件具有靠近旋转构件旋转的轴线的开口区域。 设置在旋转构件上的x射线源。 X射线检测器可以设置在旋转构件上并被配置为从x射线源接收x射线。 具有周向布置的初级和次级绕组的旋转变压器可以形成以非常高的速度旋转机架的可旋转部分的非接触式动力传递系统的一部分，初级绕组设置在固定构件上，次级绕组设置在旋转 会员。

公开(公告)号：US20110116700A1

公开(公告)日：2011-05-19

申请号：US13009584

申请日：2011-01-19

申请人： Baojun Li ,  Jiang Hsieh

发明人： Baojun Li ,  Jiang Hsieh

IPC分类号： G06K9/00 ,  G06F19/00

CPC分类号： G01T1/2985

摘要： An imaging system includes a two-dimensional detector having a plurality of cells wherein each cell is configured to detect energy or signal passing through an object. The imaging system includes a computer programmed to acquire imaging data for the plurality of cells, identify a cell to be corrected, based on the imaging data, interpolate Ix and Iy for the identified cell based on neighbor cells, and calculate local gradients gx and gy between the identified cell and its neighbor cells based on the interpolation. The computer is further programmed to calculate weighting factors wx and wy based on the local gradients, calculate a corrected final value I(0,0) for the identified cell, and correct the identified cell with the corrected final value.

摘要翻译： 成像系统包括具有多个单元的二维检测器，其中每个单元被配置为检测通过物体的能量或信号。 成像系统包括被编程为采集多个单元的成像数据的计算机，基于成像数据识别要校正的单元，基于相邻单元对所识别的单元插值Ix和Iy，并计算局部梯度gx和gy 基于内插，在所识别的小区及其相邻小区之间。 计算机还被编程为基于局部梯度计算加权因子wx和wy，计算所识别的单元的校正后的最终值I（0,0），并用校正的最终值校正所识别的单元。

公开(公告)号：US20080107324A1

公开(公告)日：2008-05-08

申请号：US11950418

申请日：2007-12-04

申请人： Jiang Hsieh ,  Stephen Metz ,  Gopal Avinash ,  Baojun Li ,  John Sabol

发明人： Jiang Hsieh ,  Stephen Metz ,  Gopal Avinash ,  Baojun Li ,  John Sabol

IPC分类号： G06K9/00

CPC分类号： G06T11/005 ,  G06T2211/424 ,  G06T2211/436

摘要： Systems, methods and apparatus are provided through which in one aspect, a three-dimensional (3D) image of an object is constructed from a plurality of two-dimensional (2D) images of the object using a specialized filter. In some embodiments, the specialized filter implements a linear ramp function, a windowing function, and/or a polynomial function. In some embodiments, the 3D image is back-projected from the filtered two-dimensional images, yielding a 3D image that has improved visual distinction of overlapping anatomic structures and reduced blurring.

摘要翻译： 提供了一种系统，方法和装置，通过该系统，方法和装置，在一个方面，使用专用滤波器从对象的多个二维（2D）图像构建对象的三维（3D）图像。 在一些实施例中，专用滤波器实现线性斜坡函数，加窗函数和/或多项式函数。 在一些实施例中，3D图像从经过滤的二维图像反投影，产生3D重建解剖结构改善的视觉区别并减少模糊。