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    Large-area individually addressable multi-beam x-ray system and method of forming same
    1.
    发明授权
    Large-area individually addressable multi-beam x-ray system and method of forming same 有权
    大面积单独寻址多光束x射线系统及其形成方法

    公开(公告)号：US06876724B2

    公开(公告)日：2005-04-05

    申请号：US10051183

    申请日：2002-01-22

    Applicant: Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

    Inventor： Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

    IPC: A61B6/03 ,  A61B6/00 ,  G21K5/02 ,  G21K5/08 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  H01J35/24 ,  H05G1/00 ,  H05G1/34 ,  H01J36/06

    CPC classification number: H01J35/14 ,  A61B6/032 ,  A61B6/4028 ,  B82Y10/00 ,  H01J35/065 ,  H01J35/22 ,  H01J2201/30469 ,  H01J2235/064 ,  H01J2235/068 ,  H05G1/34

    Abstract: A structure to generate x-rays has a plurality of stationary and individually electrically addressable field emissive electron sources with a substrate composed of a field emissive material, such as carbon nanotubes. Electrically switching the field emissive electron sources at a predetermined frequency field emits electrons in a programmable sequence toward an incidence point on a target. The generated x-rays correspond in frequency and in position to that of the field emissive electron source. The large-area target and array or matrix of emitters can image objects from different positions and/or angles without moving the object or the structure and can produce a three dimensional image. The x-ray system is suitable for a variety of applications including industrial inspection/quality control, analytical instrumentation, security systems such as airport security inspection systems, and medical imaging, such as computed tomography.

    Abstract translation: 产生X射线的结构具有多个静电和单独可电寻址的场发射电子源，其具有由诸如碳纳米管的场发射材料组成的衬底。 以预定频率电场电场切换场致发射电子源以可编程序列朝向目标上的入射点发射电子。 产生的x射线的频率和位置与场发射电子源的频率和位置相对应。 发射器的大面积目标和阵列或矩阵可以对来自不同位置和/或角度的物体进行成像，而不移动物体或结构，并可产生三维图像。 x射线系统适用于各种应用，包括工业检测/质量控制，分析仪器，机场安全检查系统等安全系统和计算机断层扫描等医学成像。

    Multi X-ray imaging apparatus and control method therefor
    3.
    发明授权
    Multi X-ray imaging apparatus and control method therefor 有权
    多X射线成像装置及其控制方法

    公开(公告)号：US07991114B2

    公开(公告)日：2011-08-02

    申请号：US12763486

    申请日：2010-04-20

    Applicant: Masahiko Okunuki ,  Makoto Sato ,  Osamu Tsujii ,  Takashi Ogura ,  Hisashi Namba

    Inventor： Masahiko Okunuki ,  Makoto Sato ,  Osamu Tsujii ,  Takashi Ogura ,  Hisashi Namba

    IPC: G01N23/083 ,  H05G1/60 ,  H01J35/06 ,  H01J35/08

    CPC classification number: H01J35/065 ,  A61B6/032 ,  A61B6/4007 ,  A61B6/4028 ,  A61B6/4441 ,  A61B6/5241 ,  A61B6/547 ,  H01J35/06 ,  H01J35/08 ,  H01J35/18 ,  H01J2235/062 ,  H01J2235/064 ,  H01J2235/068 ,  H01J2235/087 ,  H05G1/70

    Abstract: An X-ray imaging apparatus includes a multi X-ray source which includes a plurality of X-ray focuses to generate X-rays by irradiating X-ray targets with electron beams, a detector which detects X-rays which have been emitted from the multi X-ray source and have reached a detection surface, and a moving mechanism for moving the multi X-ray source within a plane facing the detection surface. The X-ray imaging apparatus acquires a plurality of X-ray detection signals from the detector by causing the multi X-ray source to perform X-ray irradiation while shifting the positions of a plurality of X-ray focuses which the detector has relative to the detection surface by moving the multi X-ray source using the moving mechanism. The apparatus then generates an X-ray projection image based on the plurality of X-ray detection signals acquired by the detector.

    Abstract translation: 一种X射线摄像装置，具备：包含多个X射线焦点以通过用电子束照射X射线靶产生X射线的多X射线源，检测从X射线 多个X射线源并且已经到达检测表面;以及移动机构，用于在面向检测表面的平面内移动多个X射线源。 X射线成像装置从检测器取得多个X射线检测信号，使多个X射线源进行X射线照射，同时移动检测器的多个X射线焦点的位置相对于 通过使用移动机构移动多个X射线源的检测表面。 然后，该装置基于由检测器获取的多个X射线检测信号生成X射线投影图像。

    Method and apparatus for controlling electron beam current
    5.
    发明申请
    Method and apparatus for controlling electron beam current 审中-公开
    用于控制电子束电流的方法和装置

    公开(公告)号：US20060274889A1

    公开(公告)日：2006-12-07

    申请号：US11415953

    申请日：2006-05-02

    Applicant: Jianping Lu ,  Otto Zhou ,  Yuan Cheng

    Inventor： Jianping Lu ,  Otto Zhou ,  Yuan Cheng

    IPC: H01J35/00

    CPC classification number: H01J35/06 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4028 ,  A61B6/405 ,  A61B6/4488 ,  A61B6/482 ,  B82Y10/00 ,  H01J3/021 ,  H01J35/065 ,  H01J35/08 ,  H01J35/105 ,  H01J35/14 ,  H01J35/22 ,  H01J35/28 ,  H01J35/30 ,  H01J2201/30469 ,  H01J2235/06 ,  H01J2235/062 ,  H01J2235/064 ,  H01J2235/068 ,  H05G1/34

    Abstract: An x-ray generating device includes a field emission cathode formed at least partially from a nanostructure-containing material having an emitted electron current density of at least 4 A/cm2. High energy conversion efficiency and compact design are achieved due to easy focusing of cold cathode emitted electrons and dramatic reduction of heating at the anode. In addition, by pulsing the field between the cathode and the gate or anode and focusing the electron beams at different anode materials, pulsed x-ray radiation with varying energy can be generated from a single device. Methods and apparatus for independent control of electron emission current and x-ray energy in x-ray tubes are also provided. The independent control can be accomplished by adjusting the distance between the cathode and anode. The independent control can also be accomplished by adjusting the temperature of the cathode. The independent control can also be accomplished by optical excitation of the cathode. The cathode can include field emissive materials such as carbon nanotubes.

    Abstract translation: X射线产生装置包括至少部分地由具有至少4A / cm 2的发射电子电流密度的含纳米结构的材料形成的场致发射阴极。 由于容易聚焦冷阴极发射电子并显着降低阳极的加热，因此实现了高能量转换效率和紧凑设计。 此外，通过在阴极和栅极或阳极之间脉冲电场并将电子束聚焦在不同的阳极材料处，可以从单个器件产生具有变化能量的脉冲X射线辐射。 还提供了用于独立控制X射线管中的电子发射电流和X射线能量的方法和装置。 独立控制可以通过调节阴极和阳极之间的距离来实现。 独立控制也可以通过调节阴极的温度来实现。 独立控制也可以通过阴极的光学激发来实现。 阴极可以包括诸如碳纳米管的场发射材料。

    Large-area individually addressable multi-beam x-ray system and method of forming same
    7.
    发明申请
    Large-area individually addressable multi-beam x-ray system and method of forming same 有权
    大面积单独寻址多光束x射线系统及其形成方法

    公开(公告)号：US20020094064A1

    公开(公告)日：2002-07-18

    申请号：US10051183

    申请日：2002-01-22

    Inventor： Otto Z. Zhou ,  Jianping Lu ,  Qi Qiu

    IPC: H01J035/00 ,  H01J035/22 ,  H01J035/32

    CPC classification number: H01J35/14 ,  A61B6/032 ,  A61B6/4028 ,  B82Y10/00 ,  H01J35/065 ,  H01J35/22 ,  H01J2201/30469 ,  H01J2235/064 ,  H01J2235/068 ,  H05G1/34

    Abstract: A structure to generate x-rays has a plurality of stationary and individually electrically addressable field emissive electron sources with a substrate composed of a field emissive material, such as carbon nanotubes. Electrically switching the field emissive electron sources at a predetermined frequency field emits electrons in a programmable sequence toward an incidence point on a target. The generated x-rays correspond in frequency and in position to that of the field emissive electron source. The large-area target and array or matrix of emitters can image objects from different positions and/or angles without moving the object or the structure and can produce a three dimensional image. The x-ray system is suitable for a variety of applications including industrial inspection/quality control, analytical instrumentation, security systems such as airport security inspection systems, and medical imaging, such as computed tomography.

    Abstract translation: 产生X射线的结构具有多个静电和单独可电寻址的场发射电子源，其具有由诸如碳纳米管的场发射材料组成的衬底。 以预定频率电场电场切换场致发射电子源以可编程序列朝向目标上的入射点发射电子。 产生的x射线的频率和位置与场发射电子源的频率和位置相对应。 发射器的大面积目标和阵列或矩阵可以对来自不同位置和/或角度的物体进行成像，而不移动物体或结构，并可产生三维图像。 x射线系统适用于各种应用，包括工业检测/质量控制，分析仪器，机场安全检查系统等安全系统和计算机断层扫描等医学成像。

    MULTI X-RAY IMAGING APPARATUS AND CONTROL METHOD THEREFOR
    9.
    发明申请
    MULTI X-RAY IMAGING APPARATUS AND CONTROL METHOD THEREFOR 审中-公开
    多X射线成像装置及其控制方法

    公开(公告)号：US20110249796A1

    公开(公告)日：2011-10-13

    申请号：US13164440

    申请日：2011-06-20

    Applicant: Masahiko Okunuki ,  Makoto Sato ,  Osamu Tsujii ,  Takashi Ogura ,  Hisashi Namba

    Inventor： Masahiko Okunuki ,  Makoto Sato ,  Osamu Tsujii ,  Takashi Ogura ,  Hisashi Namba

    IPC: G01N23/04

    CPC classification number: H01J35/065 ,  A61B6/032 ,  A61B6/4007 ,  A61B6/4028 ,  A61B6/4441 ,  A61B6/5241 ,  A61B6/547 ,  H01J35/06 ,  H01J35/08 ,  H01J35/18 ,  H01J2235/062 ,  H01J2235/064 ,  H01J2235/068 ,  H01J2235/087 ,  H05G1/70

    Abstract: An X-ray imaging apparatus includes a multi X-ray source which includes a plurality of X-ray focuses to generate X-rays by irradiating X-ray targets with electron beams, a detector which detects X-rays which have been emitted from the multi X-ray source and have reached a detection surface, and a moving mechanism for moving the multi X-ray source within a plane facing the detection surface. The X-ray imaging apparatus acquires a plurality of X-ray detection signals from the detector by causing the multi X-ray source to perform X-ray irradiation while shifting the positions of a plurality of X-ray focuses which the detector has relative to the detection surface by moving the multi X-ray source using the moving mechanism. The apparatus then generates an X-ray projection image based on the plurality of X-ray detection signals acquired by the detector.

    Abstract translation: 一种X射线摄像装置，具备：包含多个X射线焦点以通过用电子束照射X射线靶产生X射线的多X射线源，检测从X射线 多个X射线源并且已经到达检测表面;以及移动机构，用于在面向检测表面的平面内移动多个X射线源。 X射线成像装置从检测器取得多个X射线检测信号，使多个X射线源进行X射线照射，同时移动检测器的多个X射线焦点的位置相对于 通过使用移动机构移动多个X射线源的检测表面。 然后，该装置基于由检测器获取的多个X射线检测信号生成X射线投影图像。

    X-ray tube, x-ray system, and method for generating x-rays
    10.
    发明授权
    X-ray tube, x-ray system, and method for generating x-rays 失效
    X射线管，X射线系统和X射线产生方法

    公开(公告)号：US07835501B2

    公开(公告)日：2010-11-16

    申请号：US12444749

    申请日：2007-10-09

    Applicant: Stefan Hauttmann ,  Rainer Pietig ,  Jeroen Jan Lambertus Horikx

    Inventor： Stefan Hauttmann ,  Rainer Pietig ,  Jeroen Jan Lambertus Horikx

    IPC: H01J35/04 ,  H01J35/14 ,  H01J35/10

    CPC classification number: H01J35/14 ,  H01J35/06 ,  H01J35/105 ,  H01J2235/064 ,  H01J2235/1225

    Abstract: According to an exemplary embodiment an x-ray tube comprises a cathode, rotable disc anode, and a focal spot modulating unit, wherein the cathode is adapted to emit an electron beam, and wherein the focal spot modulating unit is adapted to modulate the electron beam in such a way that an intensity distribution of the electron beam on a focal spot on the anode is asymmetric such that the intensity of the electron beam on the focal spot is higher at the front of the focal spot with respect to the rotation direction.

    Abstract translation: 根据示例性实施例，X射线管包括阴极，可旋转盘阳极和焦斑调制单元，其中阴极适于发射电子束，并且其中焦点调制单元适于调制电子束 使得电子束在阳极上的焦斑上的强度分布是不对称的，使得焦点上的电子束的强度相对于旋转方向在焦点的前部较高。

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