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    Readout electronics for photon counting and energy discriminating detectors
    31.
    发明授权
    Readout electronics for photon counting and energy discriminating detectors 有权
    用于光子计数和能量鉴别检测器的读出电子装置

    公开(公告)号：US08384038B2

    公开(公告)日：2013-02-26

    申请号：US12490903

    申请日：2009-06-24

    申请人： Jianjun Guo ,  Naresh Kesavan Rao ,  John Eric Tkaczyk ,  Yanfeng Du ,  Naveen Chandra

    发明人： Jianjun Guo ,  Naresh Kesavan Rao ,  John Eric Tkaczyk ,  Yanfeng Du ,  Naveen Chandra

    IPC分类号： G01T1/24

    CPC分类号： G01T1/247

    摘要： A data acquisition system includes a charge-sensitive amplifier (CSA) configured to receive a charge from an x-ray detector, the CSA includes a high-gain electronic voltage amplifier, an electrical energy storage device coupled with the amplifier, and an electrical resistor coupled with the amplifier. The data acquisition system includes a baseline sampling circuit configured to receive an output from the CSA and to sample a baseline signal from the CSA, at least one discriminator coupled to an output of the CSA and to an output of the baseline sampling circuit, the at least one discriminator configured to output a voltage if the output of the CSA exceeds a threshold, and a counter coupled to an output of the discriminator and configured to output a digital signal indicative of a photon count received at the x-ray detector and based on the output from the CSA and on the signal from the CSA.

    摘要翻译： 数据采集​​系统包括被配置为从X射线检测器接收电荷的电荷敏感放大器（CSA），CSA包括高增益电子电压放大器，与放大器耦合的电能存储装置和电阻器 加上放大器。 数据采集​​系统包括基准采样电路，其被配置为从CSA接收输出并从CSA采样基线信号，耦合到CSA的输出和基线采样电路的输出的至少一个鉴别器， 如果所述CSA的输出超过阈值，则配置成输出电压的至少一个鉴别器，以及耦合到所述鉴别器的输出并被配置为输出指示在所述x射线检测器处接收的光子计数的数字信号的计数器，并且基于 CSA的输出和CSA的信号。

    RADIATION DETECTOR WITH VOLTAGE-BIASED FOCUS GRID
    33.
    发明申请
    RADIATION DETECTOR WITH VOLTAGE-BIASED FOCUS GRID 审中-公开
    具有电压偏心聚焦的辐射探测器

    公开(公告)号：US20130161523A1

    公开(公告)日：2013-06-27

    申请号：US13336389

    申请日：2011-12-23

    申请人： John Eric Tkaczyk ,  Vladimir A. Lobastov ,  Yanfeng Du

    发明人： John Eric Tkaczyk ,  Vladimir A. Lobastov ,  Yanfeng Du

    IPC分类号： G01T1/24 ,  H01L31/18 ,  G01T1/16

    CPC分类号： H01L31/085 ,  G01T1/241

    摘要： A radiation detector is provided employing a focus grid electrode. The focus grid electrode is biased relative to one or more anode electrodes. In this manner, movement of electrons to the anode electrodes may be enhanced, such as due to a higher electrical field strength in a conversion material and/or due to focusing of the resulting electrical field on the anode electrodes.

    摘要翻译： 使用焦点栅极设置放射线检测器。 聚焦栅极相对于一个或多个阳极电极偏置。 以这种方式，可以增加电子向阳极电极的移动，例如由于转换材料中较高的电场强度和/或由于所得电场在阳极上的聚焦。

    Semiconductor crystal based radiation detector and method of producing the same
    34.
    发明授权
    Semiconductor crystal based radiation detector and method of producing the same 有权
    基于半导体晶体的辐射探测器及其制造方法

    公开(公告)号：US08314395B2

    公开(公告)日：2012-11-20

    申请号：US12550921

    申请日：2009-08-31

    申请人： Minglong Zhang ,  Yanfeng Du ,  John Eric Tkaczyk ,  Zhaoping Wu ,  Ira Blevis

    发明人： Minglong Zhang ,  Yanfeng Du ,  John Eric Tkaczyk ,  Zhaoping Wu ,  Ira Blevis

    IPC分类号： G01T1/24

    CPC分类号： H01L31/115 ,  H01L31/1185

    摘要： A radiation detector includes a semiconductor crystal having a first surface and a second surface opposite to the first surface, a first electrode electrically coupled with the first surface of the semiconductor crystal to allow current to flow between the first electrode and the crystal, and an insulating layer on the first surface and between the semiconductor crystal and the first electrode so as to create a partially transmissive electrical barrier between the first electrode and the crystal. The insulating layer has a thickness ranging from about 50 nanometers to about 500 nanometers.

    摘要翻译： 辐射检测器包括具有与第一表面相对的第一表面和第二表面的半导体晶体，与半导体晶体的第一表面电耦合以允许电流在第一电极和晶体之间流动的第一电极，以及绝缘 在所述第一表面和所述半导体晶体与所述第一电极之间，以在所述第一电极和所述晶体之间产生部分透射的电屏障。 绝缘层的厚度范围为约50纳米至约500纳米。

    READOUT ELECTRONICS FOR PHOTON COUNTING AND ENERGY DISCRIMINATING DETECTORS
    35.
    发明申请
    READOUT ELECTRONICS FOR PHOTON COUNTING AND ENERGY DISCRIMINATING DETECTORS 有权
    用于光电计数和能量鉴别检测器的读出电子

    公开(公告)号：US20100329425A1

    公开(公告)日：2010-12-30

    申请号：US12490903

    申请日：2009-06-24

    申请人： Jianjun Guo ,  Naresh Kesavan Rao ,  John Eric Tkaczyk ,  Yanfeng Du ,  Naveen Chandra

    发明人： Jianjun Guo ,  Naresh Kesavan Rao ,  John Eric Tkaczyk ,  Yanfeng Du ,  Naveen Chandra

    IPC分类号： H05G1/26 ,  G01T1/24 ,  H05G1/28

    CPC分类号： G01T1/247

    摘要： A data acquisition system includes a charge-sensitive amplifier (CSA) configured to receive a charge from an x-ray detector, the CSA includes a high-gain electronic voltage amplifier, an electrical energy storage device coupled with the amplifier, and an electrical resistor coupled with the amplifier. The data acquisition system includes a baseline sampling circuit configured to receive an output from the CSA and to sample a baseline signal from the CSA, at least one discriminator coupled to an output of the CSA and to an output of the baseline sampling circuit, the at least one discriminator configured to output a voltage if the output of the CSA exceeds a threshold, and a counter coupled to an output of the discriminator and configured to output a digital signal indicative of a photon count received at the x-ray detector and based on the output from the CSA and on the signal from the CSA.

    摘要翻译： 数据采集​​系统包括被配置为从X射线检测器接收电荷的电荷敏感放大器（CSA），CSA包括高增益电子电压放大器，与放大器耦合的电能存储装置和电阻器 加上放大器。 数据采集​​系统包括基准采样电路，其被配置为从CSA接收输出并从CSA采样基线信号，耦合到CSA的输出和基线采样电路的输出的至少一个鉴别器， 如果所述CSA的输出超过阈值，则配置成输出电压的至少一个鉴别器，以及耦合到所述鉴别器的输出并被配置为输出指示在所述x射线检测器处接收的光子计数的数字信号的计数器，并且基于 CSA的输出和CSA的信号。

    X-ray filter having dynamically displaceable x-ray attenuating fluid
    38.
    发明授权
    X-ray filter having dynamically displaceable x-ray attenuating fluid 失效
    X射线滤光片具有动态位移的x射线衰减流体

    公开(公告)号：US07308073B2

    公开(公告)日：2007-12-11

    申请号：US11163496

    申请日：2005-10-20

    申请人： J. Eric Tkaczyk ,  Deborah J. Walter ,  Xiaoye Wu ,  Brian C. Bales ,  James W. Leblanc ,  Yanfeng Du

    发明人： J. Eric Tkaczyk ,  Deborah J. Walter ,  Xiaoye Wu ,  Brian C. Bales ,  James W. Leblanc ,  Yanfeng Du

    IPC分类号： G21K3/00

    CPC分类号： G21K1/10

    摘要： A bowtie filter is constructed to have a fluidic envelope filled with attenuating fluid and a displacement insert that can present various x-ray attenuation profiles during a scan. The insert is designed to displace the attenuating fluid to achieve a denied attenuating or filtering profile. The insert can be rotated, twisted, moved, and otherwise contorted within the fluidic envelope as needed during the course of a scan. As the angle, position and shape of the zombie is changed, the x-ray profile of the filter changes. The insert may have a default shape when at rest, but can have its shape changed when external forces are placed thereon. As x-ray filtering needs change during the course of the scan, the insert can be compressed, stretched, and/or contorted to achieve additional filtering profiles.

    摘要翻译： 弓形过滤器被构造成具有填充有衰减流体的流体信封和可在扫描期间呈现各种x射线衰减分布的位移插入件。 插入件被设计成使衰减流体移位以实现被拒绝的衰减或过滤轮廓。 在扫描过程中，插入物可以根据需要旋转，扭转，移动，并且在流体封套内扭曲。 随着僵尸的角度，位置和形状的改变，过滤器的X射线轮廓也会改变。 当静止时，插入件可以具有默认形状，但是当外力在其上放置时，其形状可以改变。 由于X射线过滤在扫描过程中需要更改，所以插入物可以被压缩，拉伸和/或扭转以实现额外的过滤轮廓。

    X-RAY FILTER HAVING DYNAMICALLY DISPLACEABLE X-RAY ATTENUATING FLUID
    39.
    发明申请
    X-RAY FILTER HAVING DYNAMICALLY DISPLACEABLE X-RAY ATTENUATING FLUID 失效
    具有动态位移X射线衰减流体的X射线滤镜

    公开(公告)号：US20070092066A1

    公开(公告)日：2007-04-26

    申请号：US11163496

    申请日：2005-10-20

    申请人： J. Tkaczyk ,  Deborah Walter ,  Xiaoye Wu ,  Brian Bales ,  James Leblanc ,  Yanfeng Du

    发明人： J. Tkaczyk ,  Deborah Walter ,  Xiaoye Wu ,  Brian Bales ,  James Leblanc ,  Yanfeng Du

    IPC分类号： G21K3/00

    CPC分类号： G21K1/10

    摘要： A bowtie filter is constructed to have a fluidic envelope filled with attenuating fluid and a displacement insert that can present various x-ray attenuation profiles during a scan. The insert is designed to displace the attenuating fluid to achieve a denied attenuating or filtering profile. The insert can be rotated, twisted, moved, and otherwise contorted within the fluidic envelope as needed during the course of a scan. As the angle, position and shape of the zombie is changed, the x-ray profile of the filter changes. The insert may have a default shape when at rest, but can have its shape changed when external forces are placed thereon. As x-ray filtering needs change during the course of the scan, the insert can be compressed, stretched, and/or contorted to achieve additional filtering profiles.

    摘要翻译： 弓形过滤器被构造成具有填充有衰减流体的流体信封和可在扫描期间呈现各种x射线衰减分布的位移插入件。 插入件被设计成使衰减流体移位以实现被拒绝的衰减或过滤轮廓。 在扫描过程中，插入物可以根据需要旋转，扭转，移动，并且在流体封套内扭曲。 随着僵尸的角度，位置和形状的改变，过滤器的X射线轮廓也会改变。 当静止时，插入件可以具有默认形状，但是当外力在其上放置时，其形状可以改变。 由于X射线过滤在扫描过程中需要更改，所以插入物可以被压缩，拉伸和/或扭转以实现额外的过滤轮廓。