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1. 发明授权

US08406537B2 Computed tomography system with data compression and transfer 有权
标题翻译：具有数据压缩和传输的计算机断层扫描系统
公开(公告)号：US08406537B2
公开(公告)日：2013-03-26
申请号：US12641109
申请日：2009-12-17
申请人： Brian Joseph Breuer , Roy-Arnulf Helge Nilsen , Steven John Woloschek , Scott David Slavic , Naveen Stephen Chandra , Paavana Sainath
发明人： Brian Joseph Breuer , Roy-Arnulf Helge Nilsen , Steven John Woloschek , Scott David Slavic , Naveen Stephen Chandra , Paavana Sainath
IPC分类号： G06K9/36 , G06K9/00
CPC分类号： A61B6/56
摘要： A computed tomography (CT) system that includes a rotational gantry and a stationary structure communicatively coupled to the rotational gantry is provided. The rotational gantry includes an X-ray source configured to emit an X-ray beam through a subject, an X-ray detector comprising one or more detector elements that receive incoming X-rays and to convert the incoming X-rays to image signals, and a data acquisition unit that processes the image signals to generate processed image data. The stationary structure is coupled to the rotational gantry via one or more slip rings that transfer the processed image data from the rotational gantry to stationary memory integral with the stationary structure via a bidirectional serial data exchange protocol.
摘要翻译：提供了一种计算机断层摄影（CT）系统，其包括旋转台架和与旋转机架通信耦合的静止结构。旋转台架包括被配置为通过被摄体发射X射线束的X射线源，X射线检测器，其包括接收入射X射线的一个或多个检测器元件并将输入的X射线转换成图像信号，以及数据获取单元，其处理图像信号以生成经处理的图像数据。固定结构通过经由双向串行数据交换协议将经处理的图像数据从旋转台架传送到与静止结构整体的固定式存储器的一个或多个滑环耦合到旋转机架。

2. 发明申请

US20110150171A1 COMPUTED TOMOGRAPHY SYSTEM WITH DATA COMPRESSION AND TRANSFER 有权
标题翻译：具有数据压缩和传输的计算机图形系统
公开(公告)号：US20110150171A1
公开(公告)日：2011-06-23
申请号：US12641109
申请日：2009-12-17
申请人： Brian Joseph Breuer , Roy-Arnulf Helge Nilsen , Steven John Woloschek , Scott David Slavic , Naveen Stephen Chandra , Paavana Sainath
发明人： Brian Joseph Breuer , Roy-Arnulf Helge Nilsen , Steven John Woloschek , Scott David Slavic , Naveen Stephen Chandra , Paavana Sainath
IPC分类号： H05G1/60
CPC分类号： A61B6/56
摘要： A computed tomography (CT) system that includes a rotational gantry and a stationary structure communicatively coupled to the rotational gantry is provided. The rotational gantry includes an X-ray source configured to emit an X-ray beam through a subject, an X-ray detector comprising one or more detector elements that receive incoming X-rays and to convert the incoming X-rays to image signals, and a data acquisition unit that processes the image signals to generate processed image data. The stationary structure is coupled to the rotational gantry via one or more slip rings that transfer the processed image data from the rotational gantry to stationary memory integral with the stationary structure via a bidirectional serial data exchange protocol.
摘要翻译：提供了一种计算机断层摄影（CT）系统，其包括旋转台架和与旋转机架通信耦合的静止结构。旋转机架包括被配置为通过被摄体发射X射线束的X射线源，X射线检测器，其包括接收入射X射线的一个或多个检测器元件并将输入的X射线转换为图像信号，以及数据获取单元，其处理图像信号以生成经处理的图像数据。固定结构通过经由双向串行数据交换协议将经处理的图像数据从旋转台架传送到与静止结构整体的固定式存储器的一个或多个滑环耦合到旋转机架。

3. 发明授权

US07747057B2 Methods and apparatus for BIS correction 失效
标题翻译： BIS校正的方法和装置
公开(公告)号：US07747057B2
公开(公告)日：2010-06-29
申请号：US11442450
申请日：2006-05-26
申请人： Xiaoye Wu , Paavana Sainath , Thomas Louis Toth , Thomas John Myers , Mary Sue Kulpins , Xiangyang Tang , Roy-Arnulf Helge Nilsen
发明人： Xiaoye Wu , Paavana Sainath , Thomas Louis Toth , Thomas John Myers , Mary Sue Kulpins , Xiangyang Tang , Roy-Arnulf Helge Nilsen
IPC分类号： G06K9/00 , G01N23/00
CPC分类号： G06T11/008 , A61B6/027 , Y10S128/92
摘要： A method for performing BIS correction includes scanning an object with a computed tomography (CT) system to obtain data, reconstructing an image using the obtained data, and using the image to perform BIS correction.
摘要翻译：用于执行BIS校正的方法包括用计算机断层摄影（CT）系统扫描对象以获得数据，使用所获得的数据重建图像，并且使用该图像执行BIS校正。

4. 发明授权

US07379527B2 Methods and apparatus for CT calibration 有权
标题翻译： CT校准方法和装置
公开(公告)号：US07379527B2
公开(公告)日：2008-05-27
申请号：US11315938
申请日：2005-12-22
申请人： Xiaoye Wu , Paavana Sainath , Ferry Tamtoro , Jean-Baptiste Thibault , Roy-Arnulf Helge Nilsen
发明人： Xiaoye Wu , Paavana Sainath , Ferry Tamtoro , Jean-Baptiste Thibault , Roy-Arnulf Helge Nilsen
IPC分类号： G01N23/00
CPC分类号： A61B6/583 , A61B6/027 , A61B6/032 , G01N2223/3035 , Y10S378/901
摘要： A method for normalizing a calibration of a computed tomographic (CT) imaging apparatus having a plurality of detector rows includes utilizing a prestored, predetermined inversion matrix and CT numbers obtained from images of a phantom to determine normalized calibration vectors for each row of a plurality of detector rows, and storing the determined normalized calibration vectors for each row of the plurality of detector rows in a memory for use in subsequent image reconstructions.
摘要翻译：用于对具有多个检测器行的计算机断层摄影（CT）成像设备进行校准的归一化方法包括利用预先存储的预定反演矩阵和从体模图像获得的CT数来确定多个检测器行，并且将所确定的多个检测器行中的每行的归一化校准向量存储在存储器中，以用于随后的图像重建。

5. 发明申请

US20070274581A1 Methods and apparatus for BIS correction 失效
标题翻译： BIS校正的方法和装置
公开(公告)号：US20070274581A1
公开(公告)日：2007-11-29
申请号：US11442450
申请日：2006-05-26
申请人： Xiaoye Wu , Paavana Sainath , Thomas Louis Toth , Thomas John Myers , Mary Sue Kulpins , Xiangyang Tang , Roy-Arnulf Helge Nilsen
发明人： Xiaoye Wu , Paavana Sainath , Thomas Louis Toth , Thomas John Myers , Mary Sue Kulpins , Xiangyang Tang , Roy-Arnulf Helge Nilsen
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , A61B6/027 , Y10S128/92
摘要： A method for performing BIS correction includes scanning an object with a computed tomography (CT) system to obtain data, reconstructing an image using the obtained data, and using the image to perform BIS correction.
摘要翻译：用于执行BIS校正的方法包括用计算机断层摄影（CT）系统扫描对象以获得数据，使用所获得的数据重建图像，并且使用该图像执行BIS校正。

6. 发明申请

US20110150174A1 MULTIPLE X-RAY TUBE SYSTEM AND METHOD OF MAKING SAME 有权
标题翻译：多个X射线管系统及其制造方法
公开(公告)号：US20110150174A1
公开(公告)日：2011-06-23
申请号：US12642965
申请日：2009-12-21
申请人： Paavana Sainath , Peter Crandall , Abdelaziz Ikhlef , Chad Smith , Ron Kent Hockersmith , Baojun Li
发明人： Paavana Sainath , Peter Crandall , Abdelaziz Ikhlef , Chad Smith , Ron Kent Hockersmith , Baojun Li
IPC分类号： H05G1/60
CPC分类号： A61B6/4429 , G01T1/2985
摘要： An imaging system includes a rotatable gantry having an opening therein to receive a subject to be scanned and configured to rotate about a central axis in a rotation direction. The imaging system also includes a first x-ray source coupled to the rotatable gantry at a first position, wherein the first position is offset from the central axis of the rotatable gantry by a first distance. Further, the imaging system includes a second x-ray source coupled to the rotatable gantry at a second position, wherein the second position is offset from the central axis of the rotatable gantry by a second distance, wherein the second position is offset from the first position in a direction coincident with the rotation direction, and wherein the second position is offset from the first position in a direction parallel to the central axis.
摘要翻译：成像系统包括可旋转机架，其中具有开口，用于接收被扫描的物体并构造为围绕旋转方向的中心轴线旋转。成像系统还包括在第一位置处联接到可旋转机架的第一x射线源，其中第一位置从可旋转机架的中心轴线偏移第一距离。此外，成像系统包括在第二位置处联接到可旋转机架的第二x射线源，其中第二位置从可旋转机架的中心轴线偏移第二距离，其中第二位置偏离第一位置位置在与旋转方向一致的方向上，并且其中第二位置在平行于中心轴线的方向上偏离第一位置。

7. 发明申请

US20070147580A1 Methods and apparatus for CT calibration 有权
标题翻译： CT校准方法和装置
公开(公告)号：US20070147580A1
公开(公告)日：2007-06-28
申请号：US11315938
申请日：2005-12-22
申请人： Xiaoye Wu , Paavana Sainath , Ferry Tamtoro , Jean-Baptiste Thibault , Roy-Arnulf Nilsen
发明人： Xiaoye Wu , Paavana Sainath , Ferry Tamtoro , Jean-Baptiste Thibault , Roy-Arnulf Nilsen
IPC分类号： A61B6/00 , H05G1/60 , G01N23/00 , G21K1/12
CPC分类号： A61B6/583 , A61B6/027 , A61B6/032 , G01N2223/3035 , Y10S378/901
摘要： A method for normalizing a calibration of a computed tomographic (CT) imaging apparatus having a plurality of detector rows includes utilizing a prestored, predetermined inversion matrix and CT numbers obtained from images of a phantom to determine normalized calibration vectors for each row of a plurality of detector rows, and storing the determined normalized calibration vectors for each row of the plurality of detector rows in a memory for use in subsequent image reconstructions.
摘要翻译：用于对具有多个检测器行的计算机断层摄影（CT）成像设备进行校准的归一化方法包括利用预先存储的预定反演矩阵和从体模图像获得的CT数来确定多个检测器行，并且将所确定的多个检测器行中的每行的归一化校准向量存储在存储器中，以用于随后的图像重建。

8. 发明授权

US08942341B2 Method of dose reduction for CT imaging and apparatus for implementing same 有权
标题翻译： CT成像剂量减少方法及其实施方法
公开(公告)号：US08942341B2
公开(公告)日：2015-01-27
申请号：US13223665
申请日：2011-09-01
申请人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
发明人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
IPC分类号： A61B6/03 , G21K3/00 , A61B6/06 , A61B6/00
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4078 , A61B6/503 , A61B6/542
摘要： A CT system includes an x-ray source configured to project an x-ray beam toward an object, a detector array, and a bowtie filter. The bowtie filter includes a first x-ray filtration region positioned to attenuate x-rays that pass through an isochannel of the detector array, a second x-ray filtration region positioned to attenuate x-rays that pass through channels of the detector array that are offcenter in a channel direction from the isochannel, and an x-ray attenuation material positionable to attenuate the x-rays that pass through the channels of the detector array that are offcenter in the channel direction from the isochannel. The CT system also includes a data acquisition system (DAS) connected to the detector array and configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.
摘要翻译： CT系统包括被配置为将X射线束投影到物体的X射线源，检测器阵列和bowtie滤波器。弓形过滤器包括第一x射线过滤区域，其定位成衰减穿过检测器阵列的等通道的x射线;第二x射线过滤区域，其被定位成衰减穿过检测器阵列的通道的x射线，离子中心在来自等信道的通道方向上，以及x射线衰减材料，其可定位成衰减穿过检测器阵列的通道的X射线，所述X射线在通道方向上偏离同步通道。 CT系统还包括连接到检测器阵列并被配置为接收来自检测器阵列的输出的数据采集系统（DAS），以及被编程为获取对象的成像数据的投影的计算机，并且使用成像数据。

9. 发明申请

US20130058451A1 METHOD OF DOSE REDUCTION FOR CT IMAGING AND APPARATUS FOR IMPLEMENTING SAME 有权
标题翻译：用于CT成像的剂量减少方法和用于实施其的装置
公开(公告)号：US20130058451A1
公开(公告)日：2013-03-07
申请号：US13223665
申请日：2011-09-01
申请人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
发明人： Jiang Hsieh , Abdelaziz Ikhlef , Paavana Sainath , Xiaoye Wu , Roman Melnyk
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/06 , A61B6/4078 , A61B6/503 , A61B6/542
摘要： A CT system includes an x-ray source configured to project an x-ray beam toward an object, a detector array, and a bowtie filter. The bowtie filter includes a first x-ray filtration region positioned to attenuate x-rays that pass through an isochannel of the detector array, a second x-ray filtration region positioned to attenuate x-rays that pass through channels of the detector array that are offcenter in a channel direction from the isochannel, and an x-ray attenuation material positionable to attenuate the x-rays that pass through the channels of the detector array that are offcenter in the channel direction from the isochannel. The CT system also includes a data acquisition system (DAS) connected to the detector array and configured to receive outputs from the detector array, and a computer programmed to acquire projections of imaging data of the object, and generate an image of the object using the imaging data.
摘要翻译： CT系统包括被配置为将X射线束投影到物体的X射线源，检测器阵列和bowtie滤波器。弓形过滤器包括第一x射线过滤区域，其定位成衰减穿过检测器阵列的等通道的x射线;第二x射线过滤区域，其被定位成衰减穿过检测器阵列的通道的x射线，离子中心在来自等信道的通道方向上，以及x射线衰减材料，其可定位成衰减穿过检测器阵列的通道的X射线，所述X射线在通道方向上偏离同步通道。 CT系统还包括连接到检测器阵列并被配置为接收来自检测器阵列的输出的数据采集系统（DAS），以及被编程为获取对象的成像数据的投影的计算机，并且使用成像数据。

10. 发明授权

US07801264B2 Method for calibrating a dual -spectral computed tomography (CT) system 有权
标题翻译：校准双光谱计算机断层摄影（CT）系统的方法
公开(公告)号：US07801264B2
公开(公告)日：2010-09-21
申请号：US11959709
申请日：2007-12-19
申请人： Xiaoye Wu , James Walter Leblanc , Paavana Sainath
发明人： Xiaoye Wu , James Walter Leblanc , Paavana Sainath
IPC分类号： A61B6/00
CPC分类号： A61B6/583 , A61B6/032 , A61B6/482 , A61B6/505
摘要： A method for calibrating and reconstructing material density images in a dual-spectral computed tomography (CT) system 100 is disclosed. An X-ray source in the CT system 100 emits a first X-ray spectrum and a second X-ray spectrum towards an object. The method includes computing calibration coefficients by using projection data from the object for the two X-ray spectra and by linearizing at least two basis materials such as bone and water simultaneously. Further, basis materials decomposition coefficients for the at least two basis materials are computed by linearizing the basis materials individually. Correction values for the projection data and for the basis materials are then computed by using the basis materials decomposition coefficients and the calibration coefficients. The computed correction values are used in reconstructing material density images for the basis materials.
摘要翻译：公开了一种用于在双光谱计算机断层摄影（CT）系统100中校准和重建材料密度图像的方法。 CT系统100中的X射线源朝向物体发射第一X射线光谱和第二X射线光谱。该方法包括通过使用来自对象的两个X射线光谱的投影数据和同时线性化至少两种基础材料例如骨骼和水来计算校准系数。此外，通过将基础材料单独线性化来计算至少两种基础材料的基础材料分解系数。然后通过使用基础材料分解系数和校准系数来计算投影数据和基础材料的校正值。计算的校正值用于重建基础材料的材料密度图像。

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