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    System and method for limiting arc effects in field emitter arrays
    1.
    发明授权
    System and method for limiting arc effects in field emitter arrays 有权
    用于限制场发射器阵列中的电弧效应的系统和方法

    公开(公告)号：US08274205B2

    公开(公告)日：2012-09-25

    申请号：US11567095

    申请日：2006-12-05

    Applicant: Colin R. Wilson ,  Ji-Ung Lee

    Inventor： Colin R. Wilson ,  Ji-Ung Lee

    IPC: H01J1/02

    CPC classification number: H01J1/3044 ,  H01J35/065 ,  H01J2235/068

    Abstract: The system and method provided herein for limiting the effects of arcing in field-type electron emitter arrays improves the robustness of such arrays. Field-type electron emitter arrays generally have a substrate, an insulator, and a gating electrode. By including a resistive substance in the gate of the emitter array, arcing events may be isolated to a single emitter such that the remaining emitters of an array can continue electron emission and/or the short circuit current of the arc can be limited.

    Abstract translation: 本文提供的用于限制场型电子发射器阵列中的电弧效应的系统和方法提高了这种阵列的鲁棒性。 场型电子发射器阵列通常具有基板，绝缘体和选通电极。 通过将电阻物质包括在发射极阵列的栅极中，电弧事件可以被隔离到单个发射极，使得阵列的剩余发射极可以继续电子发射和/或可以限制电弧的短路电流。

    Apparatus for providing collimation in a multispot X-ray source and method of making same
    2.
    发明授权
    Apparatus for providing collimation in a multispot X-ray source and method of making same 有权
    用于在多射线X射线源中提供准直的装置及其制造方法

    公开(公告)号：US07844032B2

    公开(公告)日：2010-11-30

    申请号：US12252609

    申请日：2008-10-16

    Applicant: Mark E. Vermilyea ,  Colin R. Wilson ,  Yun Zou

    Inventor： Mark E. Vermilyea ,  Colin R. Wilson ,  Yun Zou

    IPC: G21K1/02

    CPC classification number: G21K1/025 ,  H01J35/04 ,  H01J35/08 ,  H01J35/16 ,  H01J2235/086 ,  H01J2235/1204 ,  H01J2235/1262

    Abstract: A collimator includes a first plate having an aperture therein, the aperture configured to allow passage of a beam of x-rays from a source of a multi-spot source therethrough, and a second plate parallelly positioned with respect to the first plate and configured to receive and attenuate a first portion of the beam of x-rays passing through the aperture in the first plate, the second plate having an aperture therein configured to non-concentrically overlap the aperture in the first plate, to receive a second portion of the beam of x-rays passing through the aperture in the first plate, and to allow passage of the second portion of the beam of x-rays therethrough. A portion of the aperture in the first plate and a portion of the aperture in the second plate form a composite aperture parallel to the beam of x-rays, the composite aperture configured to allow passage of the second portion of the beam of x-rays through the first and second plates.

    Abstract translation: 准直器包括其中具有孔的第一板，所述孔构造成允许来自多点源的源的X射线束通过其中，并且相对于第一板平行定位的第二板被配置为 接收和衰减穿过第一板中的孔的X射线束的第一部分，第二板具有其中构造成与第一板中的孔不同心重叠的孔，以接收梁的第二部分 的X射线通过第一板中的孔，并且允许X射线束的第二部分通过其中。 第一板中的孔的一部分和第二板中的孔的一部分形成平行于X射线束的复合孔，复合孔构造成允许X射线束的第二部分通过 通过第一和第二板。

    SYSTEM AND METHOD FOR LIMITING ARC EFFECTS IN FIELD EMITTER ARRAYS
    3.
    发明申请
    SYSTEM AND METHOD FOR LIMITING ARC EFFECTS IN FIELD EMITTER ARRAYS 有权
    用于限制场发射阵列中的电弧效应的系统和方法

    公开(公告)号：US20080129177A1

    公开(公告)日：2008-06-05

    申请号：US11567095

    申请日：2006-12-05

    Applicant: Colin R. Wilson ,  Ji-Ung Lee

    Inventor： Colin R. Wilson ,  Ji-Ung Lee

    IPC: H01J1/304 ,  H01J9/02 ,  H01L21/00 ,  H01J3/00

    CPC classification number: H01J1/3044 ,  H01J35/065 ,  H01J2235/068

    Abstract: The system and method provided herein for limiting the effects of arcing in field-type electron emitter arrays improves the robustness of such arrays. Field-type electron emitter arrays generally have a substrate, an insulator, and a gating electrode. By including a resistive substance in the gate of the emitter array, arcing events may be isolated to a single emitter such that the remaining emitters of an array can continue electron emission and/or the short circuit current of the arc can be limited.

    Abstract translation: 本文提供的用于限制场型电子发射器阵列中的电弧效应的系统和方法提高了这种阵列的鲁棒性。 场型电子发射器阵列通常具有基板，绝缘体和选通电极。 通过将电阻物质包括在发射极阵列的栅极中，电弧事件可以被隔离到单个发射极，使得阵列的剩余发射极可以继续电子发射和/或可以限制电弧的短路电流。

    System and method of fast kVp switching for dual energy CT
    4.
    发明授权
    System and method of fast kVp switching for dual energy CT 有权
    双能CT快速kVp开关系统及方法

    公开(公告)号：US07826587B1

    公开(公告)日：2010-11-02

    申请号：US12558248

    申请日：2009-09-11

    Applicant: David Allen Langan ,  John Eric Tkaczyk ,  James Walter LeBlanc ,  Colin R. Wilson ,  Xiaoye Wu ,  Dan Xu ,  Thomas Matthew Benson ,  Jed Douglas Pack

    Inventor： David Allen Langan ,  John Eric Tkaczyk ,  James Walter LeBlanc ,  Colin R. Wilson ,  Xiaoye Wu ,  Dan Xu ,  Thomas Matthew Benson ,  Jed Douglas Pack

    IPC: H05G1/60

    CPC classification number: A61B6/405 ,  A61B6/032 ,  A61B6/482

    Abstract: A CT system includes a gantry, an x-ray source, a generator configured to energize the x-ray source to a first kVp and to a second kVp, a detector, and a controller. The controller is configured energize the x-ray source to the first kVp for a first time period, subsequently energize the x-ray source to the second kVp for a second time period, integrate data for a first integration period that includes a portion of a steady-state period of the x-ray source at the first kVp, integrate data for a second integration period that includes a portion of a steady-state period of the x-ray source at the second kVp, compare a signal-to-noise ratio (SNR) during the first integration period (SNRH) and the second integration period (SNRL), adjust an operating parameter of the CT system to optimize an SNRH with SNRL, and generate an image using the integrated data.

    Abstract translation: CT系统包括台架，x射线源，被配置为将x射线源激发到第一kVp的发生器和到第二kVp的检测器和控制器的发生器。 控制器被配置为在第一时间段内将x射线源激励到第一kVp，随后将x射线源激励到第二kVp第二时间段，将包含第一时间段的第一积分周期的数据整合 在第一kVp处的x射线源的稳态周期，将包括X射线源的稳态周期的一部分的第二积分周期的数据集成在第二kVp处，比较信号与噪声 在第一积分周期（SNRH）和第二积分周期（SNRL）期间的比率（SNR），调整CT系统的运行参数以利用SNRL优化SNRH，并使用积分数据生成图像。

    Solid-state CT system and method
    5.
    发明授权
    Solid-state CT system and method 失效
    固态CT系统及方法

    公开(公告)号：US06385292B1

    公开(公告)日：2002-05-07

    申请号：US09751110

    申请日：2000-12-29

    Applicant: Bruce M. Dunham ,  John Scott Price ,  Colin R. Wilson ,  Douglas Snyder

    Inventor： Bruce M. Dunham ,  John Scott Price ,  Colin R. Wilson ,  Douglas Snyder

    IPC: H01J3500

    CPC classification number: A61B6/032 ,  A61B6/4488 ,  H01J35/06 ,  H01J35/08 ,  H01J2201/30 ,  H01J2235/1204 ,  H01J2235/186

    Abstract: A solid state x-ray source (14) for a computed tomograph (CT) imaging system (10) is presented. X-ray source (14) has a cathode (58) which is preferably formed of a plurality of addressable elements. The cathode is positioned within a vacuum chamber (74) so that electrodes emitted thereby impinge upon anode (68) spaced apart from cathode (58). An electron beam (82) is formed and moved along the length of cathode (58). The anode (68) is disposed within a cooling block portion (58) and operatively adjacent to an x-ray transmissive window (66). The anode (68) and x-ray transmissive window (66) are disposed within an elongated channel (64) of the cooling block portion (56).

    Abstract translation: 提出了一种用于计算机断层摄影（CT）成像系统（10）的固态x射线源（14）。 X射线源（14）具有阴极（58），阴极（58）优选地由多个可寻址元件形成。 阴极位于真空室（74）内，使得由此发射的电极撞击与阴极（58）间隔开的阳极（68）。 沿着阴极（58）的长度形成并移动电子束（82）。 阳极（68）设置在冷却块部分（58）内并且可操作地邻近X射线透射窗（66）。 阳极（68）和x射线透射窗（66）设置在冷却块部分（56）的细长通道（64）内。

    System and method of fast KVP switching for dual energy CT
    9.
    发明授权
    System and method of fast KVP switching for dual energy CT 有权
    双能CT快速KVP开关系统及方法

    公开(公告)号：US07792241B2

    公开(公告)日：2010-09-07

    申请号：US12257658

    申请日：2008-10-24

    Applicant: Xiaoye Wu ,  David Langan ,  Colin R. Wilson ,  Yun Zou

    Inventor： Xiaoye Wu ,  David Langan ,  Colin R. Wilson ,  Yun Zou

    IPC: A61B6/00

    CPC classification number: H01J35/06 ,  H01J35/045 ,  H01J2235/068

    Abstract: A CT system includes a rotatable gantry having an opening for receiving an object to be scanned and an x-ray source coupled to the gantry and configured to project x-rays through the opening. The x-ray source includes a target, a first cathode configured to emit a first beam of electrons toward the target, a first gridding electrode coupled to the first cathode, a second cathode configured to emit a second beam of electrons toward the target, and a second gridding electrode coupled to the second cathode. The system includes a generator configured to energize the first cathode to a first kVp and to energize the second cathode to a second kVp, and a detector attached to the gantry and positioned to receive x-rays that pass through the opening. The system also includes a controller configured to apply a gridding voltage to the first gridding electrode to block emission of the first beam of electrons toward the target, apply the gridding voltage to the second gridding electrode to block emission of the second beam of electrons toward the target, and acquire dual energy imaging data from the detector.

    Abstract translation: CT系统包括可旋转机架，其具有用于接收待扫描物体的开口和耦合到台架的x射线源，并且被配置成通过开口投影X射线。 x射线源包括目标，被配置为朝向目标发射第一电子束的第一阴极，耦合到第一阴极的第一网格电极，被配置为向靶发射第二电子束的第二阴极，以及 耦合到第二阴极的第二栅电极。 该系统包括发电机，其被配置为将第一阴极激励到第一kVp并且将第二阴极激励到第二kVp，以及附接到台架并被定位成接收穿过开口的x射线的检测器。 该系统还包括：控制器，被配置为向第一格栅电极施加网格化电压，以阻止第一电子束朝向目标的发射，将网格化电压施加到第二格栅电极，以阻止第二电子束朝向 目标，并从检测器获取双能量成像数据。

    Electron emitter assembly and method for generating electron beams
    10.
    发明授权
    Electron emitter assembly and method for generating electron beams 有权
    电子发射器组件和用于产生电子束的方法

    公开(公告)号：US07187755B2

    公开(公告)日：2007-03-06

    申请号：US10904280

    申请日：2004-11-02

    Applicant: Bruce Matthew Dunham ,  John Scott Price ,  Colin R. Wilson

    Inventor： Bruce Matthew Dunham ,  John Scott Price ,  Colin R. Wilson

    IPC: H01J35/00

    CPC classification number: H01J35/065 ,  A61B6/032 ,  A61B6/4028 ,  H01J2235/064

    Abstract: An electron emitter assembly and a method for generating an electron beam are provided. The electron emitter assembly includes a laser configured to emit a first light beam and a second light beam. The electron emitter assembly further includes a mirror configured to move to a first operational position to reflect the first light beam toward a first region of a photo-cathode. The mirror is further configured to move to a second operational position to reflect the second light beam toward a second region of the photo-cathode. The photo-cathode is configured to emit a first electron beam when the first light beam contacts the first region and to emit a second electron beam when the second light beam contacts the second region. The electron emitter assembly further includes an anode configured to receive the first and second electron beams from the photo-cathode.

    Abstract translation: 提供了一种电子发射器组件和一种用于产生电子束的方法。 电子发射器组件包括被配置为发射第一光束和第二光束的激光器。 电子发射器组件还包括被配置为移动到第一操作位置以将第一光束朝向光阴极的第一区域反射的反射镜。 反射镜还被配置成移动到第二操作位置以将第二光束反射到光 - 阴极的第二区域。 当第二光束接触第二区域时，光阴极被配置为当第一光束接触第一区域时发射第一电子束并发射第二电子束。 电子发射器组件还包括被配置为从光阴极接收第一和第二电子束的阳极。

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