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104 条记录 (耗时 0.03 秒)

    Method and system for diagnosing faults in imaging scanners
    1.
    发明授权
    Method and system for diagnosing faults in imaging scanners 失效
    成像扫描仪诊断故障的方法和系统

    公开(公告)号：US06275559B1

    公开(公告)日：2001-08-14

    申请号：US09415409

    申请日：1999-10-08

    申请人： Vipin Kewal Ramani ,  Rasiklal Punjalal Shah ,  Peter Michael Edic ,  Shankar Visvanathan Guru ,  Abdalmajeid Musa Alyassin ,  Randal Vincent Dusing

    发明人： Vipin Kewal Ramani ,  Rasiklal Punjalal Shah ,  Peter Michael Edic ,  Shankar Visvanathan Guru ,  Abdalmajeid Musa Alyassin ,  Randal Vincent Dusing

    IPC分类号： A61B603

    CPC分类号： G06T1/0007 ,  A61B6/583

    摘要： A system is provided for identifying faults in a non-OEM computed tomography system having components in connection with the detectors to reconstruct an image. Then, correlation values are derived from baseline reference data files and current data files collected after a fault is suspected in the CT system. The correlation values are compared against a threshold to identify suspect detectors and a pattern recognition algorithm is applied to determine if the suspect detectors are faulty or if one of the components processing the output signals has failed. If baseline files are unavailable, the identification of faulty components is accomplished by performing correlation between the current data files and average profile values.

    摘要翻译： 提供了一种用于识别非OEM计算机断层摄影系统中的故障的系统，其具有与检测器相关的部件以重构图像。 然后，相关值从基准参考数据文件和在CT系统中怀疑发生故障之后收集的当前数据文件导出。 将相关值与阈值进行比较以识别可疑检测器，并且应用模式识别算法来确定可疑检测器是否有故障，或者处理输出信号的组件之一是否失败。 如果基线文件不可用，则通过执行当前数据文件和平均配置文件值之间的相关性来实现故障组件的识别。

    Iterative X-ray scatter correction method and apparatus
    2.
    发明授权
    Iterative X-ray scatter correction method and apparatus 有权
    迭代X射线散射校正方法和装置

    公开(公告)号：US06879715B2

    公开(公告)日：2005-04-12

    申请号：US09683255

    申请日：2001-12-05

    申请人： Peter Michael Edic ,  Armin Horst Pfoh ,  Shankar Visvanathan Guru

    发明人： Peter Michael Edic ,  Armin Horst Pfoh ,  Shankar Visvanathan Guru

    IPC分类号： G06K9/00 ,  G06T5/00

    CPC分类号： G06T5/003 ,  G06T2207/10081

    摘要： An apparatus and a method of processing a collection of uncorrected radiographs are described with the apparatus comprising an X-ray scatter compensator and a controller. The compensator is configured for iteratively generating a refined value of a normalized estimated X-ray scatter signal corresponding to an uncorrected radiograph of said collection of uncorrected radiographs. The controller is configured to be coupled to the compensator and further configured to subtract said refined value of said normalized estimated X-ray scatter signal from a corresponding normalized total X-ray signal of a respective one of said uncorrected radiographs so as to form a corresponding corrected radiograph.

    摘要翻译： 使用包括X射线散射补偿器和控制器的装置描述处理未校正射线照片的集合的装置和方法。 补偿器被配置为迭代地产生对应于所述未校正射线照片集合的未校正的X射线照片的归一化估计X射线散射信号的精细值。 所述控制器被配置为耦合到所述补偿器，并且还被配置为从所述未校正的X射线照片中的相应一个的对应的归一化总X射线信号中减去所述归一化估计的X射线散射信号的所述精细值，以便形成相应的 校正射线照相。

    Radiation imager collimator
    3.
    发明授权
    Radiation imager collimator 有权
    辐射成像仪准直仪

    公开(公告)号：US06175615B1

    公开(公告)日：2001-01-16

    申请号：US09289819

    申请日：1999-04-12

    申请人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Reinhold Franz Wirth

    发明人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Reinhold Franz Wirth

    IPC分类号： G21K102

    CPC分类号： G21K1/02 ,  G21K1/025

    摘要： A collimator 100 for use in a radiation imaging system 10, and a method for making such collimators, are provided, wherein the collimator 100 is capable of collimating radiation in two orthogonal planes. The collimator in one embodiment includes a block 101 of radiation absorbing material having a plurality of focally aligned channels 102 extending therethrough; in a second embodiment, the collimator includes first and second collimation204, 212 sections having a respective first plurality of focally aligned plate sets 201 and a respective second plurality of focally aligned plate sets 203 disposed orthogonally to the first plurality of plate sets. The method for making the collimator includes generating a CAD drawing, generating from the CAD drawing one or more stereo-lithographic files, and using the stereo-lithographic files to control an electro-deposition machining machine which creates the channels in the block.

    摘要翻译： 提供了一种用于辐射成像系统10的准直器100及其制造方法，其中准直仪100能够在两个正交平面中准直辐射。 在一个实施例中的准直器包括辐射吸收材料的块101，其具有延伸穿过其中的多个焦点对准的通道102; 在第二实施例中，准直器包括第一和第二准直204,212个部分，其具有相应的第一多个焦点对准的板组201和与第一组多个板组正交设置的相应的第二多个焦点对准的板组203。 制造准直器的方法包括生成CAD绘图，从CAD绘制一个或多个立体光刻文件，并使用立体光刻文件来控制在块中产生通道的电沉积加工机。

    Radiation imager collimator
    4.
    发明授权
    Radiation imager collimator 有权

    公开(公告)号：US06370227B1

    公开(公告)日：2002-04-09

    申请号：US09706247

    申请日：2000-11-06

    申请人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Reinhold Franz Wirth

    发明人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Reinhold Franz Wirth

    IPC分类号： G21K102

    CPC分类号： G21K1/02 ,  G21K1/025

    摘要： A collimator 100 for use in a radiation imaging system 10, and a method for making such collimators, are provided, wherein the collimator 100 is capable of collimating radiation in two orthogonal planes. The collimator in one embodiment includes a block 101 of radiation absorbing material having a plurality of focally aligned channels 102 extending therethrough; in a second embodiment, the collimator includes first and second collimation 204, 212 sections having a respective first plurality of focally aligned plate sets 201 and a respective second plurality of focally aligned plate sets 203 disposed orthogonally to the first plurality of plate sets. The method for making the collimator includes generating a CAD drawing, generating from the CAD drawing one or more stereo-lithographic files, and using the stereo-lithographic files to control an electro-deposition machining machine which creates the channels in the block.

    Method and apparatus for predicting x-ray tube failures in computed tomography systems
    5.
    发明授权
    Method and apparatus for predicting x-ray tube failures in computed tomography systems 失效
    用于预测计算机断层摄影系统中X射线管故障的方法和装置

    公开(公告)号：US06351517B1

    公开(公告)日：2002-02-26

    申请号：US09575699

    申请日：2000-07-07

    申请人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Allan John Connolly ,  Harry Kirk Mathews, Jr.

    发明人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Allan John Connolly ,  Harry Kirk Mathews, Jr.

    IPC分类号： H05G108

    CPC分类号： H05G1/08 ,  G06F19/00 ,  H05G1/54

    摘要： In predicting failure of an x-ray tube in a computed tomography (CT) system, reference detector elements normally disposed on each end of the detector, receive x-rays directly from the x-ray tube. In accordance with the invention, the output values of the reference detector elements are utilized by a tube condition prediction algorithm to predict a failure in the x-ray tube of the CT system. The tube condition prediction algorithm utilizes at least one model of the CT system and at least one prediction routine, which typically is a Kalman filter, to generate the prediction. The prediction routine uses the model to analyze the output values of the reference detector elements in order to determine the condition of the x-ray tube and predict future performance of the x-ray tube.

    摘要翻译： 在计算机断层摄影（CT）系统中预测X射线管的故障时，通常设置在检测器每端的参考探测器元件直接从X射线管接收X射线。 根据本发明，通过管状态预测算法利用参考检测器元件的输出值来预测CT系统的X射线管的故障。 管条件预测算法利用至少一个CT系统模型和通常是卡尔曼滤波器的至少一个预测程序来产生预测。 预测程序使用该模型来分析参考检测器元件的输出值，以便确定x射线管的状况并预测x射线管的未来性能。

    Radiation imager collimator
    6.
    发明授权
    Radiation imager collimator 有权
    辐射成像仪准直仪

    公开(公告)号：US06377661B1

    公开(公告)日：2002-04-23

    申请号：US09704634

    申请日：2000-11-03

    申请人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Reinhold Franz Wirth

    发明人： Shankar Visvanathan Guru ,  Peter Michael Edic ,  Reinhold Franz Wirth

    IPC分类号： G21K102

    CPC分类号： G21K1/02 ,  G21K1/025

    摘要： A collimator 100 for use in a radiation imaging system 10, and a method for making such collimators, are provided, wherein the collimator 100 is capable of collimating radiation in two orthogonal planes. The collimator in one embodiment includes a block 101 of radiation absorbing material having a plurality of focally aligned channels 102 extending therethrough; in a second embodiment, the collimator includes first and second collimation 204, 212 sections having a respective first plurality of focally aligned plate sets 201 and a respective second plurality of focally aligned plate sets 203 disposed orthogonally to the first plurality of plate sets. The method for making the collimator includes generating a CAD drawing, generating from the CAD drawing one or more stereo-lithographic files, and using the stereo-lithographic files to control an electro-deposition machining machine which creates the channels in the block.

    摘要翻译： 提供了一种用于辐射成像系统10的准直器100及其制造方法，其中准直仪100能够在两个正交平面中准直辐射。 在一个实施例中的准直器包括辐射吸收材料的块101，其具有延伸穿过其中的多个焦点对准的通道102; 在第二实施例中，准直器包括第一和第二准直204,212个部分，其具有相应的第一多个焦点对准的板组201和与第一组多个板组正交设置的相应的第二多个焦点对准的板组203。 制造准直器的方法包括生成CAD绘图，从CAD绘制一个或多个立体光刻文件，并使用立体光刻文件来控制在块中创建通道的电沉积加工机。

    Fan-shaped X-ray beam imaging systems employing graded multilayer optic devices
    8.
    发明授权
    Fan-shaped X-ray beam imaging systems employing graded multilayer optic devices 有权
    采用渐变多层光学器件的扇形X射线束成像系统

    公开(公告)号：US08311184B2

    公开(公告)日：2012-11-13

    申请号：US12871484

    申请日：2010-08-30

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

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

    IPC分类号： G21K1/06

    CPC分类号： G21K1/062 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4078 ,  A61B6/482 ,  B82Y10/00 ,  G21K2201/064

    摘要： An X-ray imaging system that produces one or more fan-shaped beams is described. The system includes a target for emitting X rays that includes at least one target focal spot, and one or more graded multilayer optic devices in optical communication with the target. The optics transmits at least a portion of the source X rays to produce the one or more fan-shaped beams. The graded multilayer optic devices include at least a first graded multilayer section for redirecting and transmitting X rays through total internal reflection. The graded multilayer section includes a high-index layer of material having a first complex refractive index n1, a low-index layer of material having a second complex refractive index n2, and a grading zone disposed between the high-index and low-index layers of material. The grading zone includes a grading layer having a third complex refractive index n3 such that Re(n1)>Re(n2)>Re(n3).

    摘要翻译： 描述了产生一个或多个扇形光束的X射线成像系统。 该系统包括用于发射包括至少一个目标焦点的X射线的目标，以及与目标光学通信的一个或多个渐变多层光学器件。 光学器件透射源X射线的至少一部分以产生一个或多个扇形光束。 分级多层光学器件至少包括用于通过全内反射重定向和透射X射线的第一渐变多层部分。 分级多层部分包括具有第一复折射率n1的材料的高折射率层，具有第二复折射率n2的材料的低折射率层，以及设置在高折射率层和低折射率层之间的分级区 的材料。 分级区域包括具有第三复折射率n3的分级层，使得Re（n1）> Re（n2）> Re（n3）。