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104 条记录 (耗时 0.041 秒)

    X-ray source and detector configuration for a non-translational x-ray diffraction system
    41.
    发明授权
    X-ray source and detector configuration for a non-translational x-ray diffraction system 失效
    用于非平移x射线衍射系统的X射线源和检测器配置

    公开(公告)号：US07742563B2

    公开(公告)日：2010-06-22

    申请号：US12207641

    申请日：2008-09-10

    申请人： Peter Michael Edic ,  Geoffrey Harding ,  Bruno K. B. De Man ,  Helmut Rudolf Strecker

    发明人： Peter Michael Edic ,  Geoffrey Harding ,  Bruno K. B. De Man ,  Helmut Rudolf Strecker

    IPC分类号： G01N23/20 ,  G01N23/04

    CPC分类号： G01N23/20

    摘要： A system and method for scanning objects using a non-translational x-ray diffraction (XRD) system is disclosed. The system includes a scanning area through which an object to be scanned traverses and a distributed x-ray source having a plurality of focal spot locations. The distributed x-ray source is affixed on the scanning area and is configured to emit x-rays towards the object as a series of parallel x-ray beams. A stationary detector arrangement is affixed on another side of the scanning area generally opposite the distributed x-ray source and is configured to measure a coherent scatter spectra of the x-rays after passing through the object. A data acquisition system (DAS) is connected to the detector arrangement and is configured to measure the coherent scatter spectra, which is utilized to generate XRD data and determine a material composition of at least a portion of the object from the XRD data.

    摘要翻译： 公开了一种使用非平移X射线衍射（XRD）系统扫描物体的系统和方法。 该系统包括扫描区域，待扫描物体穿过该扫描区域以及具有多个焦点位置的分布式X射线源。 分布式X射线源被固定在扫描区域上并且被配置为以一系列平行的X射线束朝向物体发射X射线。 固定检测器装置固定在扫描区域的与分布式x射线源大致相对的另一侧，并且被配置成测量穿过物体之后的x射线的相干散射光谱。 数据采集​​系统（DAS）连接到检测器装置，并且被配置为测量相干散射光谱，其被用于产生XRD数据并且根据XRD数据确定物体的至少一部分的材料组成。

    Method and System for Imaging Using Multiple Offset X-Ray Emission Points
    44.
    发明申请
    Method and System for Imaging Using Multiple Offset X-Ray Emission Points 有权
    使用多个偏移X射线发射点成像的方法和系统

    公开(公告)号：US20080130828A1

    公开(公告)日：2008-06-05

    申请号：US11970403

    申请日：2008-01-07

    申请人： Bruno De Man ,  Peter Michael Edic ,  Samit Basu

    发明人： Bruno De Man ,  Peter Michael Edic ,  Samit Basu

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/4028 ,  A61B6/4085

    摘要： A technique is provided for imaging a field of view using an X-ray source comprising two or more emission points. Each emission point is configured to emit a fan of radiation encompassing less than the entire field of view. The emission points are activated individually and rotate about the field of view, allowing respective streams of radiation to be emitted at various view angles about the field of view. The emission points, which may correspond to different radial regions of the field of view, may be differentially activated to emphasize a region of interest within the field of view. The multiple emission points may be extrapolated along the longitudinal axis in duplicate or offset configurations.

    摘要翻译： 提供了一种使用包括两个或更多个发射点的X射线源对视场成像的技术。 每个发射点被配置为发射包含小于整个视场的辐射风扇。 发射点被单独激活并围绕视场旋转，允许相应的辐射流以关于视场的各种视角发射。 可以对应于视场的不同径向区域的发射点可以被差异地激活以强调视野范围内的感兴趣区域。 多个发射点可以沿纵向轴线重复或偏移配置外推。

    Reconstruction of CT projection data
    45.
    发明申请
    Reconstruction of CT projection data 审中-公开
    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。

    Method and system for CT imaging using a distributed X-ray source and interpolation based reconstruction
    47.
    发明授权
    Method and system for CT imaging using a distributed X-ray source and interpolation based reconstruction 有权
    使用分布式X射线源和基于插值的重建进行CT成像的方法和系统

    公开(公告)号：US07227923B2

    公开(公告)日：2007-06-05

    申请号：US11108419

    申请日：2005-04-18

    申请人： Peter Michael Edic ,  Samit Kumar Basu ,  Bruno Kristiaan Bernard De Man

    发明人： Peter Michael Edic ,  Samit Kumar Basu ,  Bruno Kristiaan Bernard De Man

    IPC分类号： A61B6/00 ,  G01N23/00 ,  H05G1/70

    CPC分类号： A61B6/4028 ,  A61B6/032 ,  A61B6/4085 ,  H05G1/52

    摘要： A method for Computed Tomography (CT) imaging is provided. The method comprises rotating a gantry at a substantially slow rotation speed about a volume of interest. The gantry comprises a combination of X-ray source points. The X-ray source points comprise one or more discrete emission points and an arc of discrete or continuous X-ray source points. The method then comprises obtaining projection data from the combination of X-ray source points and performing a suitable reconstruction based on the projection data obtained from the combination of X-ray source points, to generate one or more reconstructed images.

    摘要翻译： 提供了一种计算机断层成像（CT）成像的方法。 该方法包括以基本上慢的旋转速度围绕感兴趣的体积旋转台架。 龙门架包括X射线源点的组合。 X射线源点包括离散或连续的X射线源点的一个或多个离散发射点和弧。 然后，该方法包括从X射线源点的组合获得投影数据，并且基于从X射线源点的组合获得的投影数据执行适当的重建，以生成一个或多个重建图像。

    Radiation imager collimator
    50.
    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。