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1. 发明申请

US20080056432A1 Reconstruction of CT projection data 审中-公开
标题翻译：重建CT投影数据
公开(公告)号：US20080056432A1
公开(公告)日：2008-03-06
申请号：US11725877
申请日：2007-03-20
申请人： Jed Douglas Pack , Bruno De Man , Samit Kumar Basu , John Charles Hill , Xiaoye Wu , Peter Michael Edic
发明人： Jed Douglas Pack , Bruno De Man , Samit Kumar Basu , John Charles Hill , Xiaoye Wu , Peter Michael Edic
IPC分类号： H05G1/60
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/416 , H01J2235/068
摘要： Systems and methods are provided for reconstructing projection data that is mathematically complete or sufficient acquired using a computed tomography (CT) system. In one embodiment, a set of projection data representative of a sampled portion of a cylindrical surface is provided. The set of projection data is reconstructed using a suitable cone-beam reconstruction algorithm. In another embodiment, two or more sets of spatially interleaved helical projection data are processed using helical interpolation. The helically interpolated set of projection data is reconstructed using a two-dimensional axial reconstruction algorithm or a three-dimensional reconstruction algorithm.
摘要翻译：提供了系统和方法，用于重建使用计算机断层摄影（CT）系统获得的数学上完整或足够的投影数据。在一个实施例中，提供了一组代表圆柱形表面的采样部分的投影数据。使用合适的锥束重建算法重建投影数据集。在另一个实施例中，使用螺旋插值来处理两组或多组空间交错的螺旋投影数据。使用二维轴向重建算法或三维重建算法重建螺旋插值的投影数据集。

2. 发明授权

US07835486B2 Acquisition and reconstruction of projection data using a stationary CT geometry 有权
标题翻译：使用固定CT几何获取和重建投影数据
公开(公告)号：US07835486B2
公开(公告)日：2010-11-16
申请号：US11726023
申请日：2007-03-20
申请人： Samit Kumar Basu , Bruno De Man , Jed Douglas Pack , Xiaoye Wu , Zhye Yin , Peter Michael Edic
发明人： Samit Kumar Basu , Bruno De Man , Jed Douglas Pack , Xiaoye Wu , Zhye Yin , Peter Michael Edic
IPC分类号： G01N23/083
CPC分类号： G01T1/2985 , A61B6/027
摘要： Systems and methods are provided for acquiring and reconstructing projection data that is mathematically complete or sufficient using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a distributed source is provided as arcuate segments offset in the X-Y plane and along the Z-axis.
摘要翻译：提供了系统和方法，用于使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建数学上完整或足够的投影数据。在一个实施例中，分布式源被提供为在X-Y平面和Z轴上偏移的弧形段。

3. 发明申请

US20080056435A1 Acquisition and reconstruction of projection data using a stationary CT geometry 有权
标题翻译：使用固定CT几何获取和重建投影数据
公开(公告)号：US20080056435A1
公开(公告)日：2008-03-06
申请号：US11726023
申请日：2007-03-20
申请人： Samit Kumar Basu , Bruno De Man , Jed Douglas Pack , Xiaoye Wu , Zhye Yin , Peter Michael Edic
发明人： Samit Kumar Basu , Bruno De Man , Jed Douglas Pack , Xiaoye Wu , Zhye Yin , Peter Michael Edic
IPC分类号： G01N23/00
CPC分类号： G01T1/2985 , A61B6/027
摘要： Systems and methods are provided for acquiring and reconstructing projection data that is mathematically complete or sufficient using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a distributed source is provided as arcuate segments offset in the X-Y plane and along the Z-axis.
摘要翻译：提供了系统和方法，用于使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建数学上完整或足够的投影数据。在一个实施例中，分布式源被提供为在X-Y平面和Z轴上偏移的弧形段。

4. 发明授权

US07706499B2 Acquisition and reconstruction of projection data using a stationary CT geometry 有权
标题翻译：使用固定CT几何获取和重建投影数据
公开(公告)号：US07706499B2
公开(公告)日：2010-04-27
申请号：US11725892
申请日：2007-03-20
申请人： Jed Douglas Pack , Zhye Yin , Samit Kumar Basu , John Charles Hill , Peter Michael Edic
发明人： Jed Douglas Pack , Zhye Yin , Samit Kumar Basu , John Charles Hill , Peter Michael Edic
IPC分类号： H05G1/60
CPC分类号： G01T1/2985 , A61B6/027
摘要： Systems and methods are provided for acquiring and reconstructing projection data using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a non-sequential activation of X-ray source locations on an annular source is employed to acquire projection data. In another embodiment, a distributed source is tilted relative to an axis of the scanner to acquire the projection data. In a further embodiment, a plurality of X-ray source locations on an annular source are activated such that the aggregated signals correspond to two or more sets of spatially interleaved helical scan data.
摘要翻译：提供了使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建投影数据的系统和方法。在一个实施例中，使用在环形源上的X射线源位置的非顺序激活来获取投影数据。在另一个实施例中，分布式源相对于扫描器的轴线倾斜以获取投影数据。在另一实施例中，环形源上的多个X射线源位置被激活，使得聚集的信号对应于两组或多组空间交错的螺旋扫描数据。

5. 发明申请

US20080056437A1 Acquisition and reconstruction of projection data using a stationary CT geometry 有权
标题翻译：使用固定CT几何获取和重建投影数据
公开(公告)号：US20080056437A1
公开(公告)日：2008-03-06
申请号：US11725892
申请日：2007-03-20
申请人： Jed Douglas Pack , Zhye Yin , Samit Kumar Basu , John Charles Hill , Peter Michael Edic
发明人： Jed Douglas Pack , Zhye Yin , Samit Kumar Basu , John Charles Hill , Peter Michael Edic
IPC分类号： G01N23/00
CPC分类号： G01T1/2985 , A61B6/027
摘要： Systems and methods are provided for acquiring and reconstructing projection data using a computed tomography (CT) system having stationary distributed X-ray sources and detector arrays. In one embodiment, a non-sequential activation of X-ray source locations on an annular source is employed to acquire projection data. In another embodiment, a distributed source is tilted relative to an axis of the scanner to acquire the projection data. In a further embodiment, a plurality of X-ray source locations on an annular source are activated such that the aggregated signals correspond to two or more sets of spatially interleaved helical scan data.
摘要翻译：提供了使用具有固定分布式X射线源和检测器阵列的计算机断层摄影（CT）系统来获取和重建投影数据的系统和方法。在一个实施例中，使用在环形源上的X射线源位置的非顺序激活来获取投影数据。在另一个实施例中，分布式源相对于扫描器的轴线倾斜以获取投影数据。在另一实施例中，环形源上的多个X射线源位置被激活，使得聚集的信号对应于两组或多组空间交错的螺旋扫描数据。

6. 发明授权

US07609802B2 Method and system for reconstructing image volumes from helical scan acquisitions 有权
标题翻译：从螺旋扫描采集重建图像体积的方法和系统
公开(公告)号：US07609802B2
公开(公告)日：2009-10-27
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： A61B6/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421
摘要： A method, computed tomography (CT) system and computer-readable medium for reconstructing an image volume of an object scanned in helical mode. An embodiment of the method includes determining discrete focal lengths within an imaging plane of the reconstructed field of view comprising the image volume; generating a circular scan sinogram(s) for the discrete focal lengths by interpolating the helical views; selecting within a backprojection operation a circular scan sonogram(s), for one or more image points within the imaging plane, over one or more circular views. The method then includes using the selected circular scan sinogram(s), in the backprojection of the image points point(s) over the circular views view(s) and 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：一种计算机断层摄影（CT）系统和用于重建以螺旋模式扫描的物体的图像体积的计算机可读介质的方法。该方法的实施例包括确定包括图像体积的重建视野的成像平面内的离散焦距; 通过内插螺旋视图来产生用于离散焦距的圆形扫描正弦图; 在反投影操作中，在一个或多个圆形视图上选择用于成像平面内的一个或多个图像点的圆形扫描超声波图。该方法然后包括在圆形视图视图上的图像点点的反投影中使用所选择的圆形扫描正弦图，并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。

7. 发明申请

US20080267476A1 METHOD AND SYSTEM FOR RECONSTRUCTING IMAGE VOLUMES FROM HELICAL SCAN ACQUISITIIONS 有权
标题翻译：用于重新构建图像质量的方法和系统，从螺旋扫描获取
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。

8. 发明授权

US09417340B2 Compact geometry CT system 有权
标题翻译：紧凑型CT系统
公开(公告)号：US09417340B2
公开(公告)日：2016-08-16
申请号：US13543255
申请日：2012-07-06
申请人： Samit Kumar Basu , Pedro Andres Garzon , Jed Douglas Pack
发明人： Samit Kumar Basu , Pedro Andres Garzon , Jed Douglas Pack
IPC分类号： G01T1/29 , G01N23/04 , G01V5/00
CPC分类号： G01T1/2985 , G01N23/046 , G01N2223/419 , G01V5/005 , Y10T29/49826
摘要： An imaging system is provided. The imaging system includes a rotating gantry. An x-ray source is mounted to the gantry. The system also includes a plurality of interchangeable x-ray detector modules is mounted to the gantry, opposite the x-ray source. The plurality of interchangeable detector modules includes a first detector module mounted at a first distance from the x-ray source and a second detector module mounted at a second distance from the x-ray source. The first distance is different from the second distance.
摘要翻译：提供成像系统。成像系统包括旋转机架。 X射线源安装在龙门架上。该系统还包括多个可互换的x射线探测器模块，安装到与X射线源相对的台架。多个可互换检测器模块包括安装在距离x射线源第一距离处的第一检测器模块和安装在离x射线源第二距离处的第二检测器模块。第一距离与第二距离不同。

9. 发明申请

US20110142313A1 METHOD FOR COMPUTED TOMOGRAPHY MOTION ESTIMATION AND COMPENSATION 有权
标题翻译：计算机运动估计和补偿方法
公开(公告)号：US20110142313A1
公开(公告)日：2011-06-16
申请号：US12638693
申请日：2009-12-15
申请人： Jed Douglas Pack , Peter Michael Edic , Bernhard Erich Hermann Claus , Maria Iatrou , James Vradenburg Miller
发明人： Jed Douglas Pack , Peter Michael Edic , Bernhard Erich Hermann Claus , Maria Iatrou , James Vradenburg Miller
IPC分类号： G06K9/36 , H05G1/60
CPC分类号： G06T11/005 , G06T7/11 , G06T7/174 , G06T7/246 , G06T2207/10081 , G06T2207/30048 , G06T2207/30101 , G06T2207/30172 , G06T2211/412
摘要： A method and system for motion estimation and compensation are disclosed. Initially, a set of one or more initial images is reconstructed using acquired imaging data. Further, one or more regions of interest are identified in this set of reconstructed initial images. At least a set of filters is applied to the identified regions of interest to generate a sequence of filtered images. Particularly, each of the filtered images in the generated sequence of filtered images includes data acquired near a different reference point. Subsequently, a motion path corresponding to each region of interest is determined based on one or more correspondences in the sequence of filtered images.
摘要翻译：公开了一种用于运动估计和补偿的方法和系统。最初，使用获取的成像数据重建一组一个或多个初始图像。此外，在该组重建的初始图像中识别一个或多个感兴趣区域。至少一组滤波器被应用于所识别的感兴趣区域以产生滤波图像序列。特别地，所生成的滤波图像序列中的每个滤波图像包括在不同参考点附近获取的数据。随后，基于滤波图像的序列中的一个或多个对应来确定对应于每个感兴趣区域的运动路径。

10. 发明授权

US08224056B2 Method for computed tomography motion estimation and compensation 有权
标题翻译：计算机断层扫描运动估计和补偿方法
公开(公告)号：US08224056B2
公开(公告)日：2012-07-17
申请号：US12638693
申请日：2009-12-15
申请人： Jed Douglas Pack , Peter Michael Edic , Bernhard Erich Hermann Claus , Maria Iatrou , James Vradenburg Miller
发明人： Jed Douglas Pack , Peter Michael Edic , Bernhard Erich Hermann Claus , Maria Iatrou , James Vradenburg Miller
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , G06T7/11 , G06T7/174 , G06T7/246 , G06T2207/10081 , G06T2207/30048 , G06T2207/30101 , G06T2207/30172 , G06T2211/412
摘要： A method and system for motion estimation and compensation are disclosed. Initially, a set of one or more initial images is reconstructed using acquired imaging data. Further, one or more regions of interest are identified in this set of reconstructed initial images. At least a set of filters is applied to the identified regions of interest to generate a sequence of filtered images. Particularly, each of the filtered images in the generated sequence of filtered images includes data acquired near a different reference point. Subsequently, a motion path corresponding to each region of interest is determined based on one or more correspondences in the sequence of filtered images.
摘要翻译：公开了一种用于运动估计和补偿的方法和系统。最初，使用获取的成像数据重建一组一个或多个初始图像。此外，在该组重建的初始图像中识别一个或多个感兴趣区域。至少一组滤波器被应用于所识别的感兴趣区域以产生滤波图像序列。特别地，所生成的滤波图像序列中的每个滤波图像包括在不同参考点附近获取的数据。随后，基于滤波图像的序列中的一个或多个对应来确定对应于每个感兴趣区域的运动路径。

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