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11. 发明授权

US08483361B2 Anode target for an x-ray tube and method for controlling the x-ray tube 有权
标题翻译：用于X射线管的阳极靶和用于控制X射线管的方法
公开(公告)号：US08483361B2
公开(公告)日：2013-07-09
申请号：US12976950
申请日：2010-12-22
申请人： Paavana Sainath , Xiaoye Wu , Girijesh K. Yadava
发明人： Paavana Sainath , Xiaoye Wu , Girijesh K. Yadava
IPC分类号： H01J35/30
CPC分类号： H01J35/10 , A61B6/027 , A61B6/032 , A61B6/4021 , A61B6/4028 , A61B6/4078 , A61B6/4233 , A61B6/482 , H01J35/14 , H01J2235/081 , H01J2235/086
摘要： Anode targets for an x-ray tube and methods for controlling x-ray tubes for x-ray systems are provided. One x-ray system includes a field-generator configured to generate a field, an electron beam generator configured to generate an electron beam directed towards a target and a voltage controller configured to control the electron beam generator to produce an electron beam at a first energy level and an electron beam at a second energy level. The x-ray system also includes a field-generator controller configured to control a field to deflect at least one of the electron beams, wherein the electron beam, at the first energy level, impinges on the target at a first contact position and the electron beam, at the second energy level, impinges on the target at a second contact position. The at the first contact position and at the second contact position is configured to filter x-rays.
摘要翻译：阳极靶向X射线管，并提供了用于控制x射线系统的X射线管的方法。一个x射线系统包括被配置为产生场的场发生器，被配置为产生朝向目标的电子束的电子束发生器和被配置为控制电子束发生器以产生第一能量的电子束的电压控制器电平和电子束处于第二能级。 x射线系统还包括场发生器控制器，其被配置为控制场以偏转至少一个电子束，其中在第一能级处的电子束在第一接触位置撞击靶，并且电子在第二能量水平处的光束在第二接触位置处撞击在目标上。在第一接触位置处和在第二接触位置处被配置为过滤x射线。

12. 发明申请

US20090161814A1 METHOD FOR CALIBRATING A DUAL -SPECTRAL COMPUTED TOMOGRAPHY (CT) SYSTEM 有权
标题翻译：用于校准双重计算机图像（CT）系统的方法
公开(公告)号：US20090161814A1
公开(公告)日：2009-06-25
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： G12B13/00 , G06K9/00 , A61B6/03
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。

13. 发明申请

US20070165772A1 Methods and apparatus for scatter correction 有权
公开(公告)号：US20070165772A1
公开(公告)日：2007-07-19
申请号：US11331727
申请日：2006-01-14
申请人： Paavana Sainath , Xiaoye Wu , Masatake Nukui , Ronald Lundgren , Thomas Myers
发明人： Paavana Sainath , Xiaoye Wu , Masatake Nukui , Ronald Lundgren , Thomas Myers
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G06T11/005 , A61B6/027 , Y10S378/901
摘要： A method for reconstructing an image of an object includes scanning the object with a computed tomography (CT) system to obtain data, estimating a size of the object using the obtained data, using the estimated size of the object to perform scatter correction on the obtained data, and reconstructing an image using the scatter corrected data.

14. 发明授权

US07813474B2 Method and apparatus for performing dual-spectrum CT with fast KV modulation at multiple-view intervals 有权
标题翻译：用于以多视角间隔执行快速KV调制的双光谱CT的方法和装置
公开(公告)号：US07813474B2
公开(公告)日：2010-10-12
申请号：US11869097
申请日：2007-10-09
申请人： Xiaoye Wu , James W. LeBlanc , Paavana Sainath , Thomas John Myers , Charles Hugh Shaughnessy , Uwe Wiedmann
发明人： Xiaoye Wu , James W. LeBlanc , Paavana Sainath , Thomas John Myers , Charles Hugh Shaughnessy , Uwe Wiedmann
IPC分类号： H05G1/60 , H05G1/32 , A61B6/03
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4241 , A61B6/482
摘要： A CT system includes a rotatable gantry having an opening for receiving a subject to be scanned, a rotatable gantry having an opening for receiving a subject to be scanned, an x-ray source configured to project x-rays having multiple energies toward the subject, and a generator configured to energize the x-ray source to a first voltage and configured to energize the x-ray source to a second voltage, the first voltage distinct from the second voltage. The system further includes a controller configured to cause the generator to energize the x-ray source to the first voltage for a first duration, acquire imaging data for at least one view during at least the first duration, after the first duration, cause the generator to energize the x-ray source to the second voltage for a second duration, and acquire imaging data for two or more views during at least the second duration.
摘要翻译： CT系统包括具有用于接收待扫描的被摄体的开口的可旋转台架，具有用于接收待扫描的被摄体的开口的可旋转机架;被配置为将具有多个能量的x射线投射到被摄体的X射线源，以及发生器，其被配置为将所述x射线源激励到第一电压并且被配置为将所述x射线源激励到第二电压，所述第一电压不同于所述第二电压。该系统还包括控制器，该控制器被配置为使得发生器在第一持续时间内，在至少第一持续时间内，在第一持续时间之后，将x射线源激励到第一电压，从而在第一持续时间之后，获得用于至少一个视图的成像数据，以将X射线源激励到第二电压持续第二持续时间，并且在至少第二持续时间内获取用于两个或更多个视图的成像数据。

15. 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。

16. 发明授权

US07283605B2 Methods and apparatus for scatter correction 有权
标题翻译：散射校正的方法和装置
公开(公告)号：US07283605B2
公开(公告)日：2007-10-16
申请号：US11331727
申请日：2006-01-14
申请人： Paavana Sainath , Xiaoye Wu , Masatake Nukui , Ronald Joseph Lundgren , Thomas John Myers
发明人： Paavana Sainath , Xiaoye Wu , Masatake Nukui , Ronald Joseph Lundgren , Thomas John Myers
IPC分类号： H05G1/60
CPC分类号： G06T11/005 , A61B6/027 , Y10S378/901
摘要： A method for reconstructing an image of an object includes scanning the object with a computed tomography (CT) system to obtain data, estimating a size of the object using the obtained data, using the estimated size of the object to perform scatter correction on the obtained data, and reconstructing an image using the scatter corrected data.
摘要翻译：一种用于重建对象的图像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，使用所获取的数据估计对象的大小，使用对象的估计大小对获得的对象进行散射校正数据，并使用分散校正数据重建图像。

17. 发明申请

US20120163530A1 ANODE TARGET FOR AN X-RAY TUBE AND METHOD FOR CONTROLLING THE X-RAY TUBE 有权
标题翻译：用于X射线管的阳极靶和用于控制X射线管的方法
公开(公告)号：US20120163530A1
公开(公告)日：2012-06-28
申请号：US12976950
申请日：2010-12-22
申请人： Paavana Sainath , Xiaoye Wu , Girijesh K. Yadava
发明人： Paavana Sainath , Xiaoye Wu , Girijesh K. Yadava
IPC分类号： A61B6/03 , H01J35/00 , H01J35/30
CPC分类号： H01J35/10 , A61B6/027 , A61B6/032 , A61B6/4021 , A61B6/4028 , A61B6/4078 , A61B6/4233 , A61B6/482 , H01J35/14 , H01J2235/081 , H01J2235/086
摘要： Anode targets for an x-ray tube and methods for controlling x-ray tubes for x-ray systems are provided. One x-ray system includes a field-generator configured to generate a field, an electron beam generator configured to generate an electron beam directed towards a target and a voltage controller configured to control the electron beam generator to produce an electron beam at a first energy level and an electron beam at a second energy level. The x-ray system also includes a field-generator controller configured to control a field to deflect at least one of the electron beams, wherein the electron beam, at the first energy level, impinges on the target at a first contact position and the electron beam, at the second energy level, impinges on the target at a second contact position. The at the first contact position and at the second contact position is configured to filter x-rays.
摘要翻译：阳极靶向X射线管，并提供了用于控制x射线系统的X射线管的方法。一个x射线系统包括被配置为产生场的场发生器，被配置为产生朝向目标的电子束的电子束发生器和被配置为控制电子束发生器以产生第一能量的电子束的电压控制器电平和电子束处于第二能级。 x射线系统还包括场发生器控制器，其被配置为控制场以偏转至少一个电子束，其中在第一能级处的电子束在第一接触位置撞击靶，并且电子在第二能量水平处的光束在第二接触位置处撞击在目标上。在第一接触位置处和在第二接触位置处被配置为过滤x射线。

18. 发明申请

US20090092219A1 METHOD AND APPARATUS FOR PERFORMING DUAL-SPECTRUM CT WITH FAST KV MODULATION AT MULTIPLE-VIEW INTERVALS 有权
标题翻译：用于在多视图间隔进行快速KV调制执行双光谱CT的方法和装置
公开(公告)号：US20090092219A1
公开(公告)日：2009-04-09
申请号：US11869097
申请日：2007-10-09
申请人： Xiaoye Wu , James W. LeBlanc , Paavana Sainath , Thomas John Myers , Charles Hugh Shaughnessy , Uwe Wiedmann
发明人： Xiaoye Wu , James W. LeBlanc , Paavana Sainath , Thomas John Myers , Charles Hugh Shaughnessy , Uwe Wiedmann
IPC分类号： H05G1/60
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4241 , A61B6/482
摘要： A CT system includes a rotatable gantry having an opening for receiving a subject to be scanned, a rotatable gantry having an opening for receiving a subject to be scanned, an x-ray source configured to project x-rays having multiple energies toward the subject, and a generator configured to energize the x-ray source to a first voltage and configured to energize the x-ray source to a second voltage, the first voltage distinct from the second voltage. The system further includes a controller configured to cause the generator to energize the x-ray source to the first voltage for a first duration, acquire imaging data for at least one view during at least the first duration, after the first duration, cause the generator to energize the x-ray source to the second voltage for a second duration, and acquire imaging data for two or more views during at least the second duration.
摘要翻译： CT系统包括具有用于接收待扫描的被摄体的开口的可旋转台架，具有用于接收待扫描的被摄体的开口的可旋转机架;被配置为将具有多个能量的x射线投射到被摄体的X射线源，以及发生器，其被配置为将所述x射线源激励到第一电压并且被配置为将所述x射线源激励到第二电压，所述第一电压不同于所述第二电压。该系统还包括控制器，该控制器被配置为使得发生器在第一持续时间内，在至少第一持续时间内，在第一持续时间之后，将x射线源激励到第一电压，从而在第一持续时间之后，获得用于至少一个视图的成像数据，以将X射线源激励到第二电压持续第二持续时间，并且在至少第二持续时间内获取用于两个或更多个视图的成像数据。

19. 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。

20. 发明授权

US08363779B2 System and method of acquiring multi-energy CT imaging data 有权
标题翻译：获取多能CT成像数据的系统和方法
公开(公告)号：US08363779B2
公开(公告)日：2013-01-29
申请号：US13484707
申请日：2012-05-31
申请人： Naveen Chandra , Xiaoye Wu , Thomas L. Toth , Jiang Hsieh
发明人： Naveen Chandra , Xiaoye Wu , Thomas L. Toth , Jiang Hsieh
IPC分类号： A61B6/00 , H05G1/64 , G06K9/00
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/4007 , A61B6/405 , A61B6/4241 , A61B6/482
摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, and a controller. The controller is configured to apply a first kVp for a first time period, apply a second kVp for a second time period, integrate two or more view datasets during the first time period, integrate one or more view datasets during the second time period, and generate an image using the datasets integrated during the first time period and during the second time period.
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机架和控制器。控制器被配置为在第一时间段内施加第一kVp，在第二时间段施加第二kVp，在第一时间段期间集成两个或更多个视图数据集，在第二时间段期间集成一个或多个视图数据集;以及使用在第一时间段期间和第二时间段期间集成的数据集生成图像。

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