公开(公告)号：US08111889B2

公开(公告)日：2012-02-07

申请号：US10813758

申请日：2004-03-31

申请人： Samit Kumar Basu ,  Bruno Kristiaan Bernard De Man ,  Peter Michael Edic ,  Ricardo Scott Avila ,  James Vradenburg Miller ,  Colin Craig McCulloch ,  Deborah Joy Walter ,  Paulo Ricardo dos Santos Mendonca ,  William Macomber Leue ,  Thomas Baby Sebastian

发明人： Samit Kumar Basu ,  Bruno Kristiaan Bernard De Man ,  Peter Michael Edic ,  Ricardo Scott Avila ,  James Vradenburg Miller ,  Colin Craig McCulloch ,  Deborah Joy Walter ,  Paulo Ricardo dos Santos Mendonca ,  William Macomber Leue ,  Thomas Baby Sebastian

IPC分类号： G06K9/00

CPC分类号： G06T11/005 ,  G06T2211/421

摘要： A technique is disclosed for generating variance data and a variance map from measured projection data acquired from a tomography system. The method comprises accessing the measured projection data from the tomography system. The method further comprises generating the variance map from the measured projection data and displaying, analyzing or processing the variance map. The variance data is determined based upon a statistical model from measured image data, and may be used for image analysis, data acquisition, in computer aided diagnosis routines, and so forth.

摘要翻译： 公开了用于从断层摄影系统获取的测量投影数据产生方差数据和方差图的技术。 该方法包括从断层摄影系统访问所测量的投影数据。 该方法还包括从所测量的投影数据生成方差图并显示，分析或处理方差图。 方差数据基于来自测量图像数据的统计模型确定，并且可以用于图像分析，数据采集，计算机辅助诊断例程等。

公开(公告)号：US08111803B2

公开(公告)日：2012-02-07

申请号：US12432225

申请日：2009-04-29

申请人： Peter Michael Edic ,  Colin Richard Wilson ,  Samit Kumar Basu

发明人： Peter Michael Edic ,  Colin Richard Wilson ,  Samit Kumar Basu

IPC分类号： G01N23/087 ,  G21K5/10 ,  H05G1/64

CPC分类号： G21K1/10 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/482 ,  G01N2223/419 ,  G01N2223/423

摘要： Methods for energy-sensitive computed tomography systems that use checkerboard filtering. A method of enhancing image analysis of projection data acquired using a detector configured with a checkerboard filter includes disposing in a system a detector to receive a transmitted beam of X-rays traversing through an object, where the system is configured so the detector receives both high- and one of total- and low-energy projection data; receiving the high- and one of total- and low-energy projection data at the detector; and then estimating an effective atomic number of the object and/or processing the projection data so as to mitigate reconstruction artifacts. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appended claims.

摘要翻译： 使用棋盘过滤的能量敏感计算机断层摄影系统的方法。 使用配置有棋盘滤波器的检测器获取的投影数据的图像分析增强方法包括在系统中设置检测器以接收穿过物体的X射线的透射束，其中系统配置为使得检测器接收高 - 和总能量和低能量投影数据之一; 在检测器处接收高能量投影数据和低能量投影数据之一; 然后估计对象的有效原子数和/或处理投影数据，以便减轻重建伪像。 已经根据具体实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代物和修改是可能的并且在所附权利要求的范围内。

公开(公告)号：US20110142314A1

公开(公告)日：2011-06-16

申请号：US12638723

申请日：2009-12-15

申请人： Jiang Hsieh ,  Roy-Arnulf Helge Nilsen ,  Peter Michael Edic ,  Bruno Kristiaan Bernard De Man ,  Jean-Baptiste Thibault ,  Baojun Li ,  John Lawrence Seamans

发明人： Jiang Hsieh ,  Roy-Arnulf Helge Nilsen ,  Peter Michael Edic ,  Bruno Kristiaan Bernard De Man ,  Jean-Baptiste Thibault ,  Baojun Li ,  John Lawrence Seamans

IPC分类号： G06T7/00 ,  G06K9/32

CPC分类号： A61B6/032 ,  A61B6/482 ,  A61B6/503 ,  G06T11/006 ,  G06T2211/412 ,  G06T2211/424

摘要： A system, method, and apparatus includes a computed tomography (CT) system having a rotatable gantry, an x-ray source, a generator, a detector having pixels and positioned to receive x-rays, and a computer. The computer is programmed to acquire CT data representative of an object, determine a first subset of the CT data, determine a second subset of the CT data, and determine a difference between the first and second subsets of the CT data to identify a motion region in the object. The computer is also programmed to update image data reconstructed from a first portion of the first subset of the CT data and corresponding to the region and reconstruct an image based on the updated image data and non-updated image data. The non-updated image data is reconstructed from a second portion the first subset of the CT data.

摘要翻译： 系统，方法和装置包括具有可旋转机架，X射线源，发生器，具有像素并被定位成接收x射线的检测器的计算机断层摄影（CT）系统和计算机。 计算机被编程为获取表示对象的CT数据，确定CT数据的第一子集，确定CT数据的第二子集，并且确定CT数据的第一和第二子集之间的差异，以识别运动区域 在对象中。 计算机还被编程为更新从CT数据的第一子集的第一部分重建并对应于该区域的图像数据，并且基于更新的图像数据和未更新的图像数据重建图像。 从CT数据的第一子集的第二部分重构未更新的图像数据。

公开(公告)号：US20090225944A1

公开(公告)日：2009-09-10

申请号：US12045110

申请日：2008-03-10

申请人： Susanne Madeline Lee ,  Peter Michael Edic

发明人： Susanne Madeline Lee ,  Peter Michael Edic

IPC分类号： G01N23/20

CPC分类号： G01N23/2076

摘要： An X-ray detection and inspection system is disclosed. The system includes an X-ray source configured to generate an interrogating X-ray beam, wherein the X-ray beam is directed towards a probe volume in a sample, one or more two-dimensional area detectors, wherein the one or more detectors are positioned at angles other than 90 degrees with respect to the direction of the interrogating beam and are configured to receive and detect non-circular conic sections of diffracted X rays from the probe volume, and an acquisition and analysis system configured to generate position and intensity data of the non-circular conic sections such that the corresponding mathematical equations of the conic sections could be generated, to identify one of a quasi-monochromatic or monochromatic XRD pattern from the non-circular conic sections, and to determine a position of the probe volume and at least two Bragg diffraction angles from said XRD pattern.

摘要翻译： 公开了一种X射线检测和检查系统。 该系统包括被配置为产生询问X射线束的X射线源，其中X射线束被引导到样本中的探针体积，一个或多个二维区域检测器，其中一个或多个检测器是 被定位成相对于询问光束的方向为90度以外的角度，并被配置为接收和检测来自探针体积的衍射X射线的非圆锥形部分，以及被配置为产生位置和强度数据的采集和分析系统 的非圆形圆锥截面，使得可以生成圆锥截面的相应数学方程，以从非圆形圆锥截面中识别准单色或单色XRD图案之一，并且确定探针体积的位置 和来自所述XRD图案的至少两个布拉格衍射角。

公开(公告)号：US20090147922A1

公开(公告)日：2009-06-11

申请号：US11952498

申请日：2007-12-07

申请人： Forrest Frank Hopkins ,  Susanne Madeline Lee ,  Peter Michael Edic

发明人： Forrest Frank Hopkins ,  Susanne Madeline Lee ,  Peter Michael Edic

IPC分类号： H01J35/18 ,  G21K3/00

CPC分类号： G21K1/062 ,  B82Y10/00 ,  G21K1/10 ,  G21K2201/061 ,  G21K2201/064 ,  G21K2201/067 ,  H01J35/16 ,  H01J2235/183

摘要： A multi-energy imaging system and method for selectively generating high-energy X-rays and low-energy X-ray beams are described. A pair of optic devices are used, one optic device being formed to emit high X-ray energies and the other optic device being formed to emit low X-ray energies. A selective filtering mechanism is used to filter the high X-ray energies from the low X-ray energies. The optic devices have at least a first solid phase layer having a first index of refraction with a first photon transmission property and a second solid phase layer having a second index of refraction with a second photon transmission property. The first and second layers are conformal to each other.

摘要翻译： 描述了用于选择性地生成高能量X射线和低能量X射线束的多能量成像系统和方法。 使用一对光学器件，一个光学器件形成为发射高X射线能量，另一个光学器件形成为发射低X射线能量。 选择性过滤机制用于从低X射线能量过滤高X射线能量。 光学器件具有至少第一固相层，其具有第一光子透射特性的第一折射率和具有第二光子透射特性的第二折射率的第二固相层。 第一层和第二层彼此共形。

公开(公告)号：US20090147910A1

公开(公告)日：2009-06-11

申请号：US11952494

申请日：2007-12-07

申请人： Peter Michael Edic ,  Jonathan David Short ,  John Eric Tkaczyk ,  Xiaoye Wu

发明人： Peter Michael Edic ,  Jonathan David Short ,  John Eric Tkaczyk ,  Xiaoye Wu

IPC分类号： G01N23/087

CPC分类号： G01N23/046 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4042 ,  A61B6/4241 ,  A61B6/482 ,  G01N2223/419

摘要： An energy-sensitive computed tomography system is provided. The energy-sensitive computed tomography system includes an X-ray source configured to emit an X-ray beam resulting from electrons impinging upon a target material. The energy-sensitive computed tomography system also includes an object positioned within the X-ray beam. The energy-sensitive computed tomography system further includes a detector configured to receive a transmitted beam of the X-rays through the object. The energy-sensitive computed tomography system also includes a filter having an alternating pattern disposed between the X-ray source and the detector, the filter configured to facilitate measuring projection data that can be used to generate low-energy and high-energy spectral information.

摘要翻译： 提供了一种能量敏感的计算机断层摄影系统。 能量敏感的计算机断层摄影系统包括被配置为发射由撞击在目标材料上的电子产生的X射线束的X射线源。 能量敏感的计算机断层摄影系统还包括位于X射线束内的物体。 能量敏感的计算机断层摄影系统还包括检测器，其被配置为接收通过物体的X射线的透射束。 能量敏感的计算机断层摄影系统还包括具有设置在X射线源和检测器之间的交替图案的滤光器，滤光器被配置为便于测量可用于产生低能量和高能量光谱信息的投影数据。

公开(公告)号：US20080267476A1

公开(公告)日：2008-10-30

申请号：US11740002

申请日：2007-04-25

申请人： David Allen Langan ,  Peter Michael Edic ,  Xiaoye Wu ,  Jed Douglas Pack

发明人： David Allen Langan ,  Peter Michael Edic ,  Xiaoye Wu ,  Jed Douglas Pack

IPC分类号： G06K9/00

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

摘要： A method and computer-readable medium for reconstructing an image volume of an object scanned in helical mode is provided. The method and computer-readable medium include obtaining one or more helical views corresponding to an image volume of an object and determining a plurality of discretized focal lengths within an imaging plane of the reconstructed field of view comprising the image volume. The method then comprises generating a plurality of circular scan sinograms for the plurality of discretized focal lengths. The plurality of circular scan sinograms are generated by interpolating the helical views. The method then comprises selecting one or more circular scan sinograms from the plurality of circular scan sinograms, based on the plurality of discretized focal lengths, wherein the selection is performed within a backprojection operation, for one or more image points within the imaging plane, over one or more circular views. The method then comprises using one or more of the selected circular scan sinograms, in the backprojection of one or more of the image points over one or more of the circular views. The method finally comprises performing a backprojection for all the image points over all the circular views to generate a reconstructed image of the object.

摘要翻译： 提供了一种用于重建以螺旋模式扫描的对象的图像体积的方法和计算机可读介质。 所述方法和计算机可读介质包括获得对应于对象的图像体积的一个或多个螺旋视图，并且确定包括图像体积的重构视场的成像平面内的多个离散焦距。 该方法然后包括为多个离散焦距生成多个圆形扫描正弦图。 通过内插螺旋视图来产生多个圆形扫描正弦图。 该方法然后包括基于多个离散焦距从多个圆形扫描正弦图中选择一个或多个圆形扫描正弦图，其中在反投影操作内对成像平面内的一个或多个图像点进行选择 一个或多个圆形视图。 该方法然后包括在一个或多个圆形视图中的一个或多个图像点的反投影中使用所选择的圆形扫描正弦图中的一个或多个。 该方法最终包括对所有圆形视图上的所有图像点执行反投影以产生对象的重建图像。

公开(公告)号：US20080247504A1

公开(公告)日：2008-10-09

申请号：US11954295

申请日：2007-12-12

申请人： Peter Michael Edic ,  Samit Kumar Basu

发明人： Peter Michael Edic ,  Samit Kumar Basu

IPC分类号： A61B6/00

CPC分类号： A61B6/405 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4028 ,  A61B6/4035 ,  A61B6/4085 ,  A61B6/4233 ,  A61B6/482 ,  G01T1/295 ,  G01T1/2985 ,  G01V5/0041 ,  G01V5/005 ,  H01J35/14 ,  H01J35/30

摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, at least one x-ray source coupled to the gantry and configured to project x-rays toward the object, a detector coupled to the gantry and having a scintillator therein and configured to receive x-rays that pass through the object, and a generator configured to energize the at least one x-ray source. The system includes a controller configured to energize the generator to project a first beam of x-rays toward the object from a first focal spot position of an anode, the first beam of x-rays having a ray traversing a path through the object, acquire imaging data from the first beam of x-rays, position the at least one x-ray source such that a second beam of x-rays projected from a second focal spot position of the anode has a ray directed to traverse the path through the object, the second anode focal spot position different than the first anode focal spot position, energize the generator to project the second beam of x-rays toward the object, and acquire imaging data from the second beam of x-rays.

摘要翻译： CT系统包括具有用于接收待扫描物体的开口的可旋转台架，耦合到台架并被配置为向物体投射X射线的至少一个x射线源，耦合到台架并具有闪烁体 并且被配置为接收穿过物体的x射线，以及被配置为激励至少一个x射线源的发生器。 该系统包括控制器，该控制器被配置为对发生器进行激励，以从阳极的第一焦斑位置朝向物体投射第一射线束，第一射线X射线具有穿过物体的路径的光线 从X射线的第一束成像数据，定位至少一个x射线源，使得从阳极的第二焦点位置投影的第二射线束具有指向穿过物体的路径的射线 第二阳极焦点位置不同于第一阳极焦斑位置，激励发生器将第二射线束朝向物体投射，并从第二射线束获取成像数据。

公开(公告)号：US20080101532A1

公开(公告)日：2008-05-01

申请号：US11554519

申请日：2006-10-30

申请人： John Eric Tkaczyk ,  Peter Michael Edic ,  James W. LeBlanc

发明人： John Eric Tkaczyk ,  Peter Michael Edic ,  James W. LeBlanc

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

CPC分类号： A61B6/541 ,  A61B8/08

摘要： ECG and ultrasound data of the heart are acquired in real-time during a scan. A data acquisition module is controlled during the scan to prospectively gate acquisition of CT data as a function of the real-time ECG data and the real-time ultrasound data. An image is reconstructed from the acquired CT data.

摘要翻译： 在扫描期间实时获取心脏的ECG和超声数据。 在扫描期间控制数据采集模块，以便根据实时ECG数据和实时超声数据对CT数据进行前瞻性门控获取。 从所获取的CT数据重建图像。

公开(公告)号：US06879656B2

公开(公告)日：2005-04-12

申请号：US10624342

申请日：2003-07-22

申请人： Erdogan Cesmeli ,  Peter Michael Edic

发明人： Erdogan Cesmeli ,  Peter Michael Edic

IPC分类号： A61B6/00 ,  A61B6/03 ,  G01N23/04 ,  G06T5/00 ,  G06T5/50 ,  G06T7/20 ,  G06T11/00

CPC分类号： A61B6/541 ,  A61B6/032 ,  A61B6/503 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T7/246 ,  G06T11/005 ,  G06T2211/412 ,  Y10S378/901

摘要： One or more techniques are provided for deriving motion data from a set of CT projection data. The techniques calculate moments associated with consistency conditions for the projection data to derive motion data from the projection data. One aspect of the present techniques uses the calculated moments to select projection data sets based upon the presence or absence of motion between the projection data sets. Periodicity information may then be extracted from the selected projection data sets. Another aspect of the present techniques uses projection data acquired by a slowly rotating volumetric CT gantry to allow the separation of a corruptive signal from a desired motion signal. Once separated, the desired motion signal may be used to identify projection data at a desired phase of motion.

摘要翻译： 提供一种或多种技术来从一组CT投影数据中导出运动数据。 该技术计算与投影数据的一致性条件相关联的时刻，以从投影数据中导出运动数据。 本技术的一个方面使用计算的时刻根据投影数据集之间的运动的存在或不存在来选择投影数据集。 然后可以从所选择的投影数据集中提取周期性信息。 本技术的另一方面使用通过缓慢旋转的体积CT台架获取的投影数据，以允许将腐蚀性信号与期望的运动信号分离。 一旦分离，期望的运动信号可以用于在期望的运动阶段识别投影数据。