公开(公告)号：US08611627B2

公开(公告)日：2013-12-17

申请号：US12976785

申请日：2010-12-22

申请人： Xiaoye Wu ,  Robert Franklin Senzig ,  Jing Zhao

发明人： Xiaoye Wu ,  Robert Franklin Senzig ,  Jing Zhao

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/5205 ,  A61B6/5229 ,  A61B6/583 ,  G06T11/005

摘要： The present disclosure relates to the performing spectral calibration of a CT imaging system. In accordance with certain embodiments, spectral calibration phantoms are scanned while positioned on a table in the imaging volume of the CT imaging system. The scans of the calibration phantoms, in conjunction with air sans performed on the CT imaging system, are used to derive information about the deviation of the measured phantom scans from an ideal. The deviation information is in turn used to derive spectral calibration vectors that may be used with the CT imaging system.

摘要翻译： 本公开涉及执行CT成像系统的光谱校准。 根据某些实施例，在定位在CT成像系统的成像体积的台上的同时扫描光谱校准模体。 校准模型的扫描结合在CT成像系统上执行的空气，用于得到关于测量的幻影扫描与理想的偏差的信息。 偏差信息又用于导出可与CT成像系统一起使用的光谱校准矢量。

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。

公开(公告)号：US08396185B2

公开(公告)日：2013-03-12

申请号：US12778756

申请日：2010-05-12

申请人： Yun Zou ,  Brian Lounsberry ,  Carey Shawn Rogers ,  Sergio Lemaitre ,  Xiaoye Wu ,  Jizhong Chen ,  Floribertus P. Heukensfeldt Jansen

发明人： Yun Zou ,  Brian Lounsberry ,  Carey Shawn Rogers ,  Sergio Lemaitre ,  Xiaoye Wu ,  Jizhong Chen ,  Floribertus P. Heukensfeldt Jansen

IPC分类号： H05G1/08 ,  H05G1/32 ,  H05G1/56 ,  H01J35/06 ,  H01J35/14

CPC分类号： A61B6/405 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4291 ,  A61B6/482 ,  H01J35/045 ,  H01J35/06

摘要： An X-ray tube includes a target and a cathode assembly. The cathode assembly includes a first filament configured to emit a first beam of electrons toward the target, a first gridding electrode coupled to the first filament, a second filament configured to emit a second beam of electrons toward the target, and a second gridding electrode coupled to the second filament.

摘要翻译： X射线管包括靶和阴极组件。 阴极组件包括：第一灯丝，被配置为朝向靶发射第一电子束;第一栅网电极，其耦合到第一灯丝;第二灯丝，被配置为朝向靶发射第二电子束;以及第二栅电极， 到第二根丝。

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。

公开(公告)号：US08160200B2

公开(公告)日：2012-04-17

申请号：US12750050

申请日：2010-03-30

申请人： John Eric Tkaczyk ,  David Allen Langan ,  Samit Kumar Basu ,  Xiaoye Wu ,  Bruno Kristiaan Bernard De Man ,  Jeffrey Seymour Gordon

发明人： John Eric Tkaczyk ,  David Allen Langan ,  Samit Kumar Basu ,  Xiaoye Wu ,  Bruno Kristiaan Bernard De Man ,  Jeffrey Seymour Gordon

IPC分类号： H05G1/26

CPC分类号： A61B6/4035 ,  A61B6/032 ,  A61B6/405 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/488 ,  A61B6/542

摘要： A technique for acquiring desired image data in an imaging system comprising at least one radiation source and a detector is described. Initially, preliminary image data corresponding to an object may be acquired. Further, at least one parameter associated with the radiation source and corresponding to a particular view angle of the radiation source may be determined based on the preliminary image data and a priori information. Similarly, at least one parameter associated with the detector and corresponding to the particular view angle may be determined based on a priori information and the preliminary image data. Efficient operating modes of the radiation source and the detector corresponding to the particular view angle may be selected based on the determined parameters to achieve a desired system performance. Subsequently, the final image data may be acquired using the selected operating modes of the radiation source and the detector.

摘要翻译： 描述了在包括至少一个辐射源和检测器的成像系统中获取所需图像数据的技术。 首先，可以获取与对象相对应的初步图像数据。 此外，可以基于初步图像数据和先验信息来确定与辐射源相关联并且对应于辐射源的特定视角的至少一个参数。 类似地，可以基于先验信息和初步图像数据来确定与检测器相关联并且对应于特定视角的至少一个参数。 可以基于确定的参数来选择对应于特定视角的辐射源和检测器的有效操作模式以实现期望的系统性能。 随后，可以使用所选择的辐射源和检测器的操作模式来获取最终图像数据。

公开(公告)号：US20120069952A1

公开(公告)日：2012-03-22

申请号：US12883631

申请日：2010-09-16

申请人： Xiaoye Wu ,  Dan Xu ,  Naveen Chandra ,  Zhanyu Ge ,  Jiang Hsieh ,  Daniel David Harrison ,  Mary Sue Kulpins

发明人： Xiaoye Wu ,  Dan Xu ,  Naveen Chandra ,  Zhanyu Ge ,  Jiang Hsieh ,  Daniel David Harrison ,  Mary Sue Kulpins

IPC分类号： A61B6/03

CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B6/482 ,  A61B6/585

摘要： An imaging system includes an x-ray source that emits a beam of x-rays toward an object, a detector that receives high frequency electromagnetic energy attenuated by the object, a data acquisition system (DAS) operably connected to the detector, and a computer operably connected to the DAS. The computer is programmed to compute detector coefficients based on a static low kVp measurement and a static high kVp measurement, capture incident spectra at high and low kVp during fast kVp switching, compute effective X-ray incident spectra at high and low kVp during fast kVp switching using the captured incident spectra, scan a water phantom and normalize the computed detector coefficients to water, adjust the computed effective X-ray incident spectra based on the normalized detector coefficients, compute basis material decomposition functions using the adjusted X-ray incident spectra, and generate one or more basis material density images using the computed basis material decomposition functions.

摘要翻译： 成像系统包括：x射线源，其朝向物体发射X射线束;接收被物体衰减的高频电磁能的检测器;可操作地连接到检测器的数据采集系统（DAS）;以及计算机 可操作地连接到DAS。 计算机被编程为基于静态低kVp测量和静态高kVp测量来计算检测器系数，在快速kVp切换期间在高和低kVp处捕获入射光谱，在快速kVp期间计算高和低kVp处的有效X射线入射光谱 使用捕获的入射光谱切换，扫描水体模型并将计算的检测器系数归一化为水，基于归一化的检测器系数调整计算的有效X射线入射光谱，使用调整的X射线入射光谱计算基础材料分解函数， 并使用所计算的基础材料分解函数生成一个或多个基础材料密度图像。

公开(公告)号：US20110211667A1

公开(公告)日：2011-09-01

申请号：US12714168

申请日：2010-02-26

申请人： Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Bruno Kristiaan Bernard De Man ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

发明人： Abdelaziz Ikhlef ,  Jiang Hsieh ,  Jeffrey Alan Kautzer ,  Robert F. Senzig ,  Bruno Kristiaan Bernard De Man ,  Paavana Sainath ,  Xiaoye Wu ,  Jed Douglas Pack

IPC分类号： H05G1/60 ,  B23P11/00

CPC分类号： A61B6/4208 ,  A61B6/032 ,  G01T1/2985 ,  Y10T29/49826

摘要： A system, method, and apparatus includes a computed tomography (CT) detector array having a central region with a plurality of central region detecting cells configured to acquire CT data of a first number of slices during a scan, a first wing along a first side of the central region, and a second wing along a second side of the central region opposite the first side. The first wing includes a plurality of first wing detecting cells configured to acquire CT data of a second number of slices during the scan. The second wing includes a plurality of second wing detecting cells configured to acquire CT data of a third number of slices during the scan. The second and third number of slices are less than the first number of slices. The first wing detecting cells are of a different type than the central region detecting cells.

摘要翻译： 系统，方法和装置包括具有中心区域的计算机断层摄影（CT）检测器阵列，多个中心区域检测单元被配置为在扫描期间获取第一数量的切片的CT数据，沿着第一侧 并且沿着与第一侧相对的中心区域的第二侧的第二翼。 第一机翼包括多个第一机翼检测单元，其被配置为在扫描期间获取第二数量的切片的CT数据。 第二翼包括多个第二翼检测单元，其被配置为在扫描期间获取第三数量的切片的CT数据。 第二和第三数量的切片小于第一数量的切片。 第一机翼检测单元与中央区域检测单元不同。

公开(公告)号：US07995702B2

公开(公告)日：2011-08-09

申请号：US12547117

申请日：2009-08-25

申请人： Dan Xu ,  David Allen Langan ,  Xiaoye Wu

发明人： Dan Xu ,  David Allen Langan ,  Xiaoye Wu

IPC分类号： A61B6/00

CPC分类号： G01N23/046 ,  A61B6/027 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/005 ,  G06T2211/408

摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, an x-ray source coupled to the gantry and configured to project x-rays through the opening, a generator configured to energize the x-ray source to a first kVp and to a second kVp to generate the x-rays, and a detector having pixels therein, the detector attached to the gantry and positioned to receive the x-rays. The system includes a computer programmed to acquire a first view dataset and a second view dataset with the x-ray source energized to the first kVp, interpolate the first and second view datasets to generate interpolated pixels in an interpolated view dataset at the first kVp, using at least two pixels from each of the first and second view datasets to generate each interpolated pixel in the interpolated view dataset, and generate an image of the object using the interpolated view dataset.

摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口，耦合到台架的X射线源，并且被配置成将X射线投射穿过开口;发生器，被配置为将x射线源激励到 第一kVp和第二kVp以产生x射线，以及其中具有像素的检测器，所述检测器附接到台架并定位成接收x射线。 该系统包括被编程为获取第一视图数据集的计算机和具有激励到第一kVp的x射线源的第二视图数据集，内插第一和第二视图数据集以在第一kVp的内插视图数据集中生成内插像素， 使用来自第一和第二视图数据集中的每一个的至少两个像素来生成内插视图数据集中的每个内插像素，并且使用内插视图数据集生成对象的图像。

公开(公告)号：US20110158381A1

公开(公告)日：2011-06-30

申请号：US12647603

申请日：2009-12-28

申请人： Zhaoping Wu ,  Haochuan Jiang ,  Joseph James Lacey ,  James S. Vartuli ,  Yunfeng Sun ,  Qun Deng ,  Xiaoye Wu ,  Kun Tao ,  Zhaohui Yang

发明人： Zhaoping Wu ,  Haochuan Jiang ,  Joseph James Lacey ,  James S. Vartuli ,  Yunfeng Sun ,  Qun Deng ,  Xiaoye Wu ,  Kun Tao ,  Zhaohui Yang

IPC分类号： H05G1/60 ,  G21K1/02 ,  B29D11/00 ,  B05D5/06

CPC分类号： G21K1/025 ,  A61B6/032 ,  A61B6/4291 ,  B29D11/00596

摘要： A two dimensional collimator assembly and method of manufacturing thereof is disclosed. The collimator assembly includes a wall structure constructed to form a two dimensional array of channels to collimate x-rays. The wall structure further includes a first portion positioned proximate the object to be scanned and configured to absorb scattered x-rays and a second portion formed integrally with the first portion and extending out from the first portion away from the object to be scanned. The first portion of the wall structure has a height greater than a height of the second portion of the wall structure. The second portion of the wall structure includes a reflective material coated thereon in each of the channels forming the two dimensional array of channels.

摘要翻译： 公开了二维准直器组件及其制造方法。 准直器组件包括构造成形成二维阵列阵列以准直X射线的壁结构。 壁结构还包括靠近待扫描物体定位的第一部分，并且被配置成吸收散射的x射线，以及第二部分与第一部分整体形成并从第一部分延伸离开被扫描物体。 壁结构的第一部分的高度大于壁结构的第二部分的高度。 壁结构的第二部分包括在每个通道中涂覆的反射材料，形成二维通道阵列。

公开(公告)号：US20110052022A1

公开(公告)日：2011-03-03

申请号：US12547117

申请日：2009-08-25

申请人： Dan Xu ,  David Allen Langan ,  Xiaoye Wu

发明人： Dan Xu ,  David Allen Langan ,  Xiaoye Wu

IPC分类号： G06K9/00 ,  G01N23/00

CPC分类号： G01N23/046 ,  A61B6/027 ,  G01N2223/419 ,  G01N2223/612 ,  G06T11/005 ,  G06T2211/408

摘要： A CT system includes a rotatable gantry having an opening for receiving an object to be scanned, an x-ray source coupled to the gantry and configured to project x-rays through the opening, a generator configured to energize the x-ray source to a first kVp and to a second kVp to generate the x-rays, and a detector having pixels therein, the detector attached to the gantry and positioned to receive the x-rays. The system includes a computer programmed to acquire a first view dataset and a second view dataset with the x-ray source energized to the first kVp, interpolate the first and second view datasets to generate interpolated pixels in an interpolated view dataset at the first kVp, using at least two pixels from each of the first and second view datasets to generate each interpolated pixel in the interpolated view dataset, and generate an image of the object using the interpolated view dataset.

摘要翻译： CT系统包括可旋转机架，其具有用于接收待扫描物体的开口，耦合到台架的X射线源，并且被配置成将X射线投射穿过开口;发生器，被配置为将x射线源激励到 第一kVp和第二kVp以产生x射线，以及其中具有像素的检测器，所述检测器附接到台架并定位成接收x射线。 该系统包括被编程为获取第一视图数据集的计算机和具有激励到第一kVp的x射线源的第二视图数据集，内插第一和第二视图数据集以在第一kVp的内插视图数据集中生成内插像素， 使用来自第一和第二视图数据集中的每一个的至少两个像素来生成内插视图数据集中的每个内插像素，并且使用内插视图数据集生成对象的图像。