利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

92 条记录 (耗时 0.024 秒)

    Scintillator arrays for radiation detectors and methods for making same
    61.
    发明授权
    Scintillator arrays for radiation detectors and methods for making same 失效
    用于辐射探测器的闪烁体阵列及其制造方法

    公开(公告)号：US06448566B1

    公开(公告)日：2002-09-10

    申请号：US09681301

    申请日：2001-03-15

    申请人： Robert J. Riedner ,  David M. Hoffman ,  Richard J. Ruzga ,  Eti Ganin

    发明人： Robert J. Riedner ,  David M. Hoffman ,  Richard J. Ruzga ,  Eti Ganin

    IPC分类号： G01T124

    CPC分类号： G01T1/202

    摘要： To provide simpler, more efficient methods for making scintillator arrays, one embodiment of the present invention is a method for making a scintillator array. The method includes extruding a mixture of a scintillator powder and a binder into rods; laminating the extruded rods with a sinterable reflector material; and sintering the laminated rods and reflector material into a scintillator block. Scintillator array embodiments of the present invention are useful in many types of pixelated radiation detectors, such as those used in computed tomography systems.

    摘要翻译： 为了提供更简单，更有效的制造闪烁体阵列的方法，本发明的一个实施例是制造闪烁体阵列的方法。 该方法包括将闪烁体粉末和粘合剂的混合物挤出到棒中; 用可烧结的反射器材料层压挤出的棒; 并将层压棒和反射体材料烧结成闪烁体块。 本发明的闪烁体阵列实施例可用于许多类型的像素化辐射检测器，例如在计算机断层摄影系统中使用的那些。

    Methods and apparatus for application specific computed tomographic radiation detection
    62.
    发明授权
    Methods and apparatus for application specific computed tomographic radiation detection 有权
    应用特定计算机断层摄影辐射检测的方法和装置

    公开(公告)号：US06445763B1

    公开(公告)日：2002-09-03

    申请号：US09721321

    申请日：2000-11-22

    申请人： David M. Hoffman

    发明人： David M. Hoffman

    IPC分类号： H04N5335

    CPC分类号： H04N5/32

    摘要： One aspect of the present invention is a detector array for an imaging system, the detector array having a plurality of electrically conductive busses, a plurality of detector elements arranged in rows extending in an x-direction and columns extending in a z-direction, a plurality of scan lines, each operatively coupled to at least one of the detector elements so that electrical activation of one of the scan lines transfers an electrical charge from the detector element onto one of the busses; a plurality of read-out lines; and an interconnection matrix operatively coupled to the busses and the read-out lines and electrically reconfigurable to transfer electrical charges from the busses selectively to the read-out lines.

    摘要翻译： 本发明的一个方面是一种用于成像系统的检测器阵列，该检测器阵列具有多个导电总线，多个沿X方向排列成行的检测器元件和沿z方向延伸的列， 多个扫描线，每个扫描线可操作地耦合到至少一个检测器元件，使得扫描线之一的电激活将电荷从检测器元件传输到总线之一上; 多条读出线; 以及可操作地耦合到总线和读出线的互连矩阵，并且电可重新配置以将电荷从总线选择性地转移到读出线。

    Detector modules for computed tomograph system
    63.
    发明授权
    Detector modules for computed tomograph system 失效
    用于计算机断层摄影系统的检测器模块

    公开(公告)号：US06173031B2

    公开(公告)日：2001-01-09

    申请号：US08977442

    申请日：1997-11-26

    申请人： David M. Hoffman ,  Brian D. Johnston ,  Francois Kotian ,  Hui David He

    发明人： David M. Hoffman ,  Brian D. Johnston ,  Francois Kotian ,  Hui David He

    IPC分类号： G01N2300

    CPC分类号： A61B6/5205 ,  G01N23/046 ,  G01N2223/419

    摘要： A multislice detector module producing an alterable quantity of slices and slice resolutions. In one embodiment, the detector module includes a plurality of photodiodes arranged in an array of rows and columns, a switch apparatus electrically coupled to photodiode output signals, and a decoder. The decoder is configured to enable or prevent each photodiode from being transmitted through the switch apparatus. The configuration of the decoder determines how many slices of data are transmitted and the resolution of each slice.

    摘要翻译： 多分段检测器模块产生切片和切片分辨率的可变量。 在一个实施例中，检测器模块包括布置成行和列阵列的多个光电二极管，电耦合到光电二极管输出信号的开关装置和解码器。 解码器被配置为启用或防止每个光电二极管通过开关装置传输。 解码器的配置决定了传输的数据片数和每个片的分辨率。

    Scalable detector for computed tomograph system
    64.
    发明授权
    Scalable detector for computed tomograph system 失效
    计算机断层扫描系统的可扩展检测器

    公开(公告)号：US6137857A

    公开(公告)日：2000-10-24

    申请号：US979011

    申请日：1997-11-26

    申请人： David M. Hoffman ,  August O. Englert

    发明人： David M. Hoffman ,  August O. Englert

    IPC分类号： A61B6/03 ,  G01T1/29 ,  G21K1/02 ,  G01N23/00

    CPC分类号： A61B6/5205 ,  A61B6/032 ,  G01T1/2985 ,  G21K1/025

    摘要： A multislice detector array producing an alterable quantity of slices and slice resolutions. In one embodiment, the detector array includes a detector housing, a plurality of detector modules, and a collimator. Each detector module includes a plurality of photodiodes arranged in an array of rows and columns, a switch apparatus electrically coupled to the photodiode output signals, and a decoder. The collimator is configured to separate X-ray beams so that only the focal X-ray beams are impinged upon the detector modules.

    摘要翻译： 多分辨率检测器阵列产生切片和切片分辨率的可变量。 在一个实施例中，检测器阵列包括检测器壳体，多个检测器模块和准直器。 每个检测器模块包括布置成行和列阵列的多个光电二极管，电耦合到光电二极管输出信号的开关装置和解码器。 准直器被配置为分离X射线束，使得只有焦点X射线束撞击在检测器模块上。

    CT detector having a segmented optical coupler and method of manufacturing same
    67.
    发明授权
    CT detector having a segmented optical coupler and method of manufacturing same 有权
    CT检测器具有分段光耦合器及其制造方法

    公开(公告)号：US07382854B2

    公开(公告)日：2008-06-03

    申请号：US11626181

    申请日：2007-01-23

    申请人： David M. Hoffman ,  Michael F. Hoge

    发明人： David M. Hoffman ,  Michael F. Hoge

    IPC分类号： A61B6/00

    CPC分类号： G01T1/2018 ,  A61B6/032 ,  A61B6/4291 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G01T1/2002 ,  G01T1/202 ,  G01T1/2985

    摘要： The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light collection efficiency of the photodiode array. The segmented optical coupler is defined by a series of reflector elements that collectively form a plurality of open cells. The open cells form light transmission cavities and facilitate the collimation of light from a scintillator to a photodiode. The cavities may be filled with optical epoxy for sealing to the photodiode array.

    摘要翻译： 本发明涉及一种用于CT成像系统的CT检测器，其中包括光电二极管阵列和闪烁体阵列之间的分段光耦合器。 分段光耦合器还用作光准直器，其提高了光电二极管阵列的光收集效率。 分段光耦合器由共同形成多个开放单元的一系列反射器元件限定。 开放的电池形成光透射腔，并促进从闪烁体到光电二极管的准直。 空腔可以填充有光学环氧树脂以密封到光电二极管阵列。

    Multi-layer reflector for CT detector
    69.
    发明授权
    Multi-layer reflector for CT detector 有权
    多层反射镜用于CT检测器

    公开(公告)号：US07308074B2

    公开(公告)日：2007-12-11

    申请号：US10707405

    申请日：2003-12-11

    申请人： Haochuan Jiang ,  David M. Hoffman

    发明人： Haochuan Jiang ,  David M. Hoffman

    IPC分类号： G01T1/24

    CPC分类号： G01T1/2002 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/4411

    摘要： A multi-layer reflector for a CT detector is disclosed. The reflector includes an x-ray absorption component that is sandwiched between a pair of highly reflective components. Such a reflector is formed between adjacent scintillators of a CT detector so as to reduce cross-talk between adjacent scintillators as well as maintain a relatively high light output for signal detection. Moreover, the multi-layer reflectors may be disposed one-dimensionally or two-dimensionally across a scintillator array. A method of manufacturing such a reflector and incorporating same into a CT detector is also disclosed.

    摘要翻译： 公开了一种用于CT检测器的多层反射器。 反射器包括夹在一对高反射部件之间的x射线吸收部件。 这样的反射器形成在CT检测器的相邻的闪烁体之间，以减少相邻的闪烁体之间的串扰，并且保持用于信号检测的较高的光输出。 此外，多层反射器可以一次性地或二维地布置在闪烁体阵列上。 还公开了制造这种反射器并将其结合到CT检测器中的方法。