公开(公告)号：US07630477B2

公开(公告)日：2009-12-08

申请号：US11831034

申请日：2007-07-31

申请人： Thomas L. Toth ,  J. Eric Tkaczyk ,  Jiang Hsieh

发明人： Thomas L. Toth ,  J. Eric Tkaczyk ,  Jiang Hsieh

IPC分类号： G21K3/00 ,  A61B6/03

CPC分类号： A61B6/4042 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4488 ,  G01T1/2985 ,  G21K1/04 ,  G21K1/10

摘要： A method and apparatus for tailoring the profile of an x-ray beam for radiographic imaging for a specific subject is disclosed. The invention includes a filter assembly having a pair of filters, each of which may be dynamically controlled by a motor assembly during data acquisition. The filters are positionable in the x-ray beam so as to shape the intensity profile of the x-ray beam. In one exemplary embodiment, the filters are dynamically positioned during CT data acquisition based on the shape of the subject. A method of determining the shape of the subject prior to CT data acquisition is also disclosed.

摘要翻译： 公开了一种用于定制用于特定对象的X射线成像的X射线束的轮廓的方法和装置。 本发明包括具有一对滤波器的滤波器组件，每个滤波器可以在数据采集期间由电机组件动态地控制。 过滤器可以定位在x射线束中，以便形成x射线束的强度分布。 在一个示例性实施例中，基于对象的形状，在CT数据采集期间，滤波器被动态地定位。 还公开了在CT数据采集之前确定对象的形状的方法。

公开(公告)号：US07573040B2

公开(公告)日：2009-08-11

申请号：US11690374

申请日：2007-03-23

申请人： J. Eric Tkaczyk ,  Wen Li ,  Yanfeng Du ,  James W. LeBlanc

发明人： J. Eric Tkaczyk ,  Wen Li ,  Yanfeng Du ,  James W. LeBlanc

IPC分类号： G01T1/24

CPC分类号： G01T1/249 ,  G01T1/242

摘要： A diagnostic imaging system includes a high frequency electromagnetic energy source that emits a beam of high frequency electromagnetic energy toward an object to be imaged. An energy discriminating (ED) detector receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source. The ED detector includes a first direct conversion layer and a second direct conversion layer. The first direct conversion layer comprises a first direct conversion material and the second direct conversion layer comprises a second direct conversion material that is different from the first direct conversion material. A data acquisition system (DAS) is operably connected to the ED detector and a computer operably connected to the DAS.

摘要翻译： 诊断成像系统包括向待成像对象发射高频电磁能束的高频电磁能源。 能量识别（ED）检测器接收由高频电磁能源发出的高频电磁能。 ED检测器包括第一直接转换层和第二直接转换层。 第一直接转换层包括第一直接转换材料，第二直接转换层包括不同于第一直接转换材料的第二直接转换材料。 数据采集​​系统（DAS）可操作地连接到ED检测器和可操作地连接到DAS的计算机。

公开(公告)号：US07362849B2

公开(公告)日：2008-04-22

申请号：US11325023

申请日：2006-01-04

申请人： Jonathan Short ,  Martin Lee ,  J. Eric Tkaczyk ,  David Hoffman ,  Brian David Yanoff

发明人： Jonathan Short ,  Martin Lee ,  J. Eric Tkaczyk ,  David Hoffman ,  Brian David Yanoff

IPC分类号： G21K1/02

CPC分类号： G01T1/1642 ,  G01T1/1648 ,  G21K1/025

摘要： A two dimensional (2D) collimator assembly and a detector system employing a 2D collimator assembly. More specifically, a collimator assembly is provided, having elements extending in the x and z-planes of a detector system. The 2D collimator assembly includes a number of blades arranged in parallel. Each of the blades includes fins extending from one or both sides of the body of the blade. The fins are coupled to each adjacent array to form the 2D collimator assembly.

摘要翻译： 二维（2D）准直器组件和采用2D准直器组件的检测器系统。 更具体地，提供了准直器组件，其具有在检测器系统的x和z平面中延伸的元件。 2D准直器组件包括并联布置的多个叶片。 每个叶片包括从叶片的主体的一侧或两侧延伸的翅片。 翅片联接到每个相邻的阵列以形成2D准直器组件。

公开(公告)号：US20080230709A1

公开(公告)日：2008-09-25

申请号：US11690374

申请日：2007-03-23

申请人： J. Eric Tkaczyk ,  Wen Li ,  Yanfeng Du ,  James W. LeBlanc

发明人： J. Eric Tkaczyk ,  Wen Li ,  Yanfeng Du ,  James W. LeBlanc

IPC分类号： G01T1/24

CPC分类号： G01T1/249 ,  G01T1/242

摘要： A diagnostic imaging system includes a high frequency electromagnetic energy source that emits a beam of high frequency electromagnetic energy toward an object to be imaged. An energy discriminating (ED) detector receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source. The ED detector includes a first direct conversion layer and a second direct conversion layer. The first direct conversion layer comprises a first direct conversion material and the second direct conversion layer comprises a second direct conversion material that is different from the first direct conversion material. A data acquisition system (DAS) is operably connected to the ED detector and a computer operably connected to the DAS.

摘要翻译： 诊断成像系统包括向待成像对象发射高频电磁能束的高频电磁能源。 能量识别（ED）检测器接收由高频电磁能源发出的高频电磁能。 ED检测器包括第一直接转换层和第二直接转换层。 第一直接转换层包括第一直接转换材料，第二直接转换层包括不同于第一直接转换材料的第二直接转换材料。 数据采集​​系统（DAS）可操作地连接到ED检测器和可操作地连接到DAS的计算机。

公开(公告)号：US07308073B2

公开(公告)日：2007-12-11

申请号：US11163496

申请日：2005-10-20

申请人： J. Eric Tkaczyk ,  Deborah J. Walter ,  Xiaoye Wu ,  Brian C. Bales ,  James W. Leblanc ,  Yanfeng Du

发明人： J. Eric Tkaczyk ,  Deborah J. Walter ,  Xiaoye Wu ,  Brian C. Bales ,  James W. Leblanc ,  Yanfeng Du

IPC分类号： G21K3/00

CPC分类号： G21K1/10

摘要： A bowtie filter is constructed to have a fluidic envelope filled with attenuating fluid and a displacement insert that can present various x-ray attenuation profiles during a scan. The insert is designed to displace the attenuating fluid to achieve a denied attenuating or filtering profile. The insert can be rotated, twisted, moved, and otherwise contorted within the fluidic envelope as needed during the course of a scan. As the angle, position and shape of the zombie is changed, the x-ray profile of the filter changes. The insert may have a default shape when at rest, but can have its shape changed when external forces are placed thereon. As x-ray filtering needs change during the course of the scan, the insert can be compressed, stretched, and/or contorted to achieve additional filtering profiles.

摘要翻译： 弓形过滤器被构造成具有填充有衰减流体的流体信封和可在扫描期间呈现各种x射线衰减分布的位移插入件。 插入件被设计成使衰减流体移位以实现被拒绝的衰减或过滤轮廓。 在扫描过程中，插入物可以根据需要旋转，扭转，移动，并且在流体封套内扭曲。 随着僵尸的角度，位置和形状的改变，过滤器的X射线轮廓也会改变。 当静止时，插入件可以具有默认形状，但是当外力在其上放置时，其形状可以改变。 由于X射线过滤在扫描过程中需要更改，所以插入物可以被压缩，拉伸和/或扭转以实现额外的过滤轮廓。

公开(公告)号：US07298812B2

公开(公告)日：2007-11-20

申请号：US11278287

申请日：2006-03-31

申请人： J. Eric Tkaczyk ,  William Macomber Leue ,  Walter Irving Garms ,  Joseph Bendahan ,  Deborah Walter ,  Sussan Pourjavid-Granfors ,  Xiaoye Wu ,  Peter Michael Edic ,  Pierfrancesco Landolfi

发明人： J. Eric Tkaczyk ,  William Macomber Leue ,  Walter Irving Garms ,  Joseph Bendahan ,  Deborah Walter ,  Sussan Pourjavid-Granfors ,  Xiaoye Wu ,  Peter Michael Edic ,  Pierfrancesco Landolfi

IPC分类号： G01N23/00

CPC分类号： A61B6/405 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/482 ,  G01V5/0041 ,  G01V5/005 ,  G06T11/005

摘要： A CT scanner acquires CT images at different energy levels and registers those images to provide a composite image that is substantially free of beam hardening artifacts and conspicuously provides atomic information of that imaged.

摘要翻译： CT扫描仪以不同的能量级别获取CT图像并登记这些图像以提供基本上没有光束硬化假象的合成图像，并且显着地提供该成像的原子信息。

公开(公告)号：US07583779B2

公开(公告)日：2009-09-01

申请号：US10904716

申请日：2004-11-24

申请人： J. Eric Tkaczyk ,  Deborah Walter ,  Yanfeng Du

发明人： J. Eric Tkaczyk ,  Deborah Walter ,  Yanfeng Du

IPC分类号： A61B6/00

CPC分类号： A61B6/032 ,  A61B6/4035 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/5258 ,  A61B6/542 ,  G01N2223/419 ,  G01N2223/423 ,  G06T11/006

摘要： A system and method are disclosed for reconstructing contrast-enhanced CT images that are substantially free of beam-hardening artifacts. An imaging system includes a radiation source configured to project radiation toward an object to be scanned and an energy discriminating detector assembly having a plurality of detector elements and configured to detect radiation emitted by the radiation source and attenuated by the object to be scanned. The imaging system also includes computer programmed to count a number of photons detected by each detector element and associate an energy value to each counted photon and determine a material composition of a CT view from the number of photons counted and the energy value associated with each counted photon. The computer is also programmed to apply a weighting to the CT view based on the material composition of the CT view and reconstruct an image with differential weighting based on the weighting of the CT view.

摘要翻译： 公开了一种系统和方法，用于重建基本上没有束固化假象的对比度增强的CT图像。 成像系统包括被配置为向待扫描的物体投射辐射的辐射源，以及具有多个检测器元件并被配置为检测由辐射源发射并被被扫描物体衰减的辐射的能量鉴别检测器组件。 成像系统还包括被编程为对每个检测器元件检测到的数量的光子进行计数的计算机，并将能量值与每个计数光子相关联并且根据所计数的光子数量和与每个计数相关联的能量值确定CT视图的材料组成 光子。 计算机还被编程为基于CT视图的材料组成对CT视图应用加权，并且基于CT视图的加权重建具有差分加权的图像。

公开(公告)号：US07532703B2

公开(公告)日：2009-05-12

申请号：US11692304

申请日：2007-03-28

申请人： Yanfeng Du ,  J. Eric Tkaczyk ,  David M. Hoffman

发明人： Yanfeng Du ,  J. Eric Tkaczyk ,  David M. Hoffman

IPC分类号： A61B6/00

CPC分类号： G01T1/2985 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  G01T1/20 ,  G01T1/2018 ,  G01T1/242 ,  G01T1/249

摘要： A diagnostic imaging system includes a high frequency electromagnetic energy source that emits a beam of high frequency electromagnetic energy toward an object to be imaged. An energy discriminating (ED) detector receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source. The ED detector includes a direct conversion layer dynamically operable in a photon counting mode in one view and in an integrating mode in another view and an indirect conversion layer. A data acquisition system (DAS) is operably connected to the ED detector and a computer operably connected to the DAS.

摘要翻译： 诊断成像系统包括向待成像对象发射高频电磁能束的高频电磁能源。 能量识别（ED）检测器接收由高频电磁能源发出的高频电磁能。 ED检测器包括在一个视图中以在另一视图和间接转换层中的积分模式中以光子计数模式动态操作的直接转换层。 数据采集​​系统（DAS）可操作地连接到ED检测器和可操作地连接到DAS的计算机。

公开(公告)号：US20080240339A1

公开(公告)日：2008-10-02

申请号：US11692304

申请日：2007-03-28

申请人： Yanfeng Du ,  J. Eric Tkaczyk ,  David M. Hoffman

发明人： Yanfeng Du ,  J. Eric Tkaczyk ,  David M. Hoffman

IPC分类号： A61B6/00 ,  G01T1/161

CPC分类号： G01T1/2985 ,  A61B6/032 ,  A61B6/4241 ,  A61B6/482 ,  G01T1/20 ,  G01T1/2018 ,  G01T1/242 ,  G01T1/249

摘要： A diagnostic imaging system includes a high frequency electromagnetic energy source that emits a beam of high frequency electromagnetic energy toward an object to be imaged. An energy discriminating (ED) detector receives high frequency electromagnetic energy emitted by the high frequency electromagnetic energy source. The ED detector includes a direct conversion layer dynamically operable in a photon counting mode in one view and in an integrating mode in another view and an indirect conversion layer. A data acquisition system (DAS) is operably connected to the ED detector and a computer operably connected to the DAS.

摘要翻译： 诊断成像系统包括向待成像对象发射高频电磁能束的高频电磁能源。 能量识别（ED）检测器接收由高频电磁能源发出的高频电磁能。 ED检测器包括在一个视图中以在另一视图和间接转换层中的积分模式中以光子计数模式动态操作的直接转换层。 数据采集​​系统（DAS）可操作地连接到ED检测器和可操作地连接到DAS的计算机。