公开(公告)号：US07620443B2

公开(公告)日：2009-11-17

申请号：US10501121

申请日：2003-01-09

Applicant: Hiroto Kokubun ,  Osamu Miyazaki

Inventor： Hiroto Kokubun ,  Osamu Miyazaki

IPC: A61B5/05 ,  G06K9/00 ,  H01J35/00

CPC classification number: A61B6/541 ,  A61B6/503

Abstract: An X-ray CT apparatus can be configured such that an amount of artifacts of a tomographic image of a heart is reduced. For example, the X-ray CT apparatus can include detecting means for detecting a static cardiac time phase with a small amount of motion artifacts in a predetermined portion of the subject based on heartbeat information acquired in association with the projection data, and image reconstructing means for generating the tomographic image by reconstructing projection data corresponding to the static cardiac time phase detected by the detecting means.

Abstract translation: 可以配置X射线CT装置，使得心脏的断层图像的伪像量减少。 例如，X射线CT装置可以包括检测装置，用于基于与投影数据相关联地获取的心跳信息，在对象的预定部分中检测具有少量运动伪影的静态心脏时间相位，以及图像重建装置 用于通过重建与由检测装置检测到的静态心脏时间相对应的投影数据来生成断层图像。

公开(公告)号：US20090230314A1

公开(公告)日：2009-09-17

申请号：US11462999

申请日：2006-08-07

Applicant: Ka-Ngo Leung ,  Tak Pui Lou ,  William A. Barletta

Inventor： Ka-Ngo Leung ,  Tak Pui Lou ,  William A. Barletta

IPC: G01T3/00 ,  H01J35/12 ,  H01J35/00

CPC classification number: H05G2/00 ,  G01V5/0091

Abstract: A cylindrical gamma generator includes a coaxial RF-driven plasma ion source and target. A hydrogen plasma is produced by RF excitation in a cylindrical plasma ion generator using an RF antenna. A cylindrical gamma generating target is coaxial with the ion generator, separated by plasma and extraction electrodes which has many openings. The plasma generator emanates ions radially over 360° and the cylindrical target is thus irradiated by ions over its entire circumference. The plasma generator and target may be as long as desired.

Abstract translation: 圆柱形γ发生器包括同轴RF驱动的等离子体离子源和靶。 在使用RF天线的圆柱形等离子体离子发生器中通过RF激发产生氢等离子体。 圆柱形伽马产生靶与离子发生器同轴，由具有许多开口的等离子体和引出电极分离。 等离子体发生器径向离子发射离子360°，圆柱形靶因此在其整个圆周上被离子照射。 等离子体发生器和靶可以是期望的长度。

公开(公告)号：US07502446B2

公开(公告)日：2009-03-10

申请号：US11581954

申请日：2006-10-17

Applicant: Robert Dotten ,  Robert Taylor ,  Emilio Panarella ,  Meisheng Xu ,  Yuriy Antoshko ,  Ian Stanley Chapman ,  Philippe P. Gratton ,  David Johnson

Inventor： Robert Dotten ,  Robert Taylor ,  Emilio Panarella ,  Meisheng Xu ,  Yuriy Antoshko ,  Ian Stanley Chapman ,  Philippe P. Gratton ,  David Johnson

IPC: H01J35/00

CPC classification number: H05G2/003

Abstract: A soft x-ray generator includes a unique pulse trigger assembly which reliably and reproducibly provides a plasma to initiate the discharge between a cathode and an anode, and having a cone-shaped geometry. The soft x-ray generator of the present invention also includes a rotating anode which is generally disk-shaped with an outer circumferential edge which can be rotated with respect to the cathode to expose different sections of the anode to the plasma discharge, thereby reducing anode wear and providing longer term operation. Anode erosion is also reduced by the liquid cooling of the anode during use. The generator utilizes a relatively low capacitance for the cathode-to-anode discharge and a relatively high voltage and pulse repetition rate (frequency) to achieve continuous reproducible results.

Abstract translation: 软X射线发生器包括独特的脉冲触发器组件，其可靠地和可重复地提供等离子体以引发阴极和阳极之间的放电，并且具有锥形几何形状。 本发明的软X射线发生器还包括旋转阳极，该旋转阳极通常为圆盘状，具有能够相对于阴极旋转的外周边缘，以将阳极的不同部分暴露于等离子体放电，从而减少阳极 磨损并提供长期的操作。 在使用过程中阳极的液体冷却也减少了阳极侵蚀。 发生器利用相对低的电容用于阴极至阳极放电和相对较高的电压和脉冲重复率（频率），以实现连续可重复的结果。

公开(公告)号：US20090003529A1

公开(公告)日：2009-01-01

申请号：US11770331

申请日：2007-06-28

Applicant: Yun Zou ,  Mark E. Vermilyea

Inventor： Yun Zou ,  Mark E. Vermilyea

IPC: H01J35/00 ,  H01J29/48

CPC classification number: H01J1/304 ,  H01J35/065 ,  H01J2235/068

Abstract: A field emitter electron gun includes at least one field emitter cathode deposited on a substrate layer and configured to generate an electron beam. An extraction plate having an opening therethrough is positioned adjacent to the at least one field emitter cathode and is operated at a voltage so as to extract the electron beam out therefrom. A meshed grid is disposed between each of the at least one field emitter cathodes and the extraction plate. The meshed grid is configured to operate at a voltage so as to enhance an electric field at a surface of the at least one field emitter cathode. The meshed grid is a one-dimensional grid configured to focus the electron beam received from the at least one field emitter cathode into a desired spot size.

Abstract translation: 场致发射电子枪包括沉积在衬底层上并被配置为产生电子束的至少一个场致发射极阴极。 具有穿过其中的开口的提取板被定位成与所述至少一个场发射极阴极相邻，并且在电压下操作以从其中提取出电子束。 网格布置在每个至少一个场发射极阴极和提取板之间。 网状栅格被配置为在电压下操作，以便增强至少一个场发射极阴极的表面处的电场。 网格网格是一个一维网格，其被配置为将从至少一个场发射极阴极接收的电子束聚焦成所需的斑点大小。

公开(公告)号：US20080279336A1

公开(公告)日：2008-11-13

申请号：US11747604

申请日：2007-05-11

Applicant: Myles Standish Peterson, II ,  Thomas Francis McNulty ,  Liangheng Qiu ,  Carey Shawn Rogers ,  Dalong Zhong

Inventor： Myles Standish Peterson, II ,  Thomas Francis McNulty ,  Liangheng Qiu ,  Carey Shawn Rogers ,  Dalong Zhong

IPC: H01J35/00

CPC classification number: H01J35/101 ,  F16C33/44 ,  F16C2206/06 ,  H01J2235/1046 ,  H01J2235/1066 ,  H01J2235/108

Abstract: A method for manufacturing an x-ray tube bearing cage includes the step of forming a bearing cage from a carbon-carbon composite material. A coating is applied to the carbon-carbon composite bearing cage. The coating includes an outer layer formed of a dry film lubricant. The coated carbon-carbon composite bearing cage is included in a bearing assembly in the x-ray tube and forms a lubricious enclosure for bearing balls positioned therein to minimize wear and heat generation in the bearing assembly.

Abstract translation: 制造X射线管轴承保持架的方法包括从碳 - 碳复合材料形成轴承保持架的步骤。 将碳涂层施加到碳 - 碳复合轴承保持架上。 涂层包括由干膜润滑剂形成的外层。 涂覆的碳 - 碳复合轴承保持架包括在x射线管中的轴承组件中，并且形成用于定位在其中的轴承滚珠的润滑外壳，以最小化轴承组件中的磨损和发热。

公开(公告)号：US20080240359A1

公开(公告)日：2008-10-02

申请号：US12078130

申请日：2008-03-27

Applicant: Katsunori Otsuka ,  Toshiyuki Saito ,  Masahiro Suzuki

Inventor： Katsunori Otsuka ,  Toshiyuki Saito ,  Masahiro Suzuki

IPC: H01J35/00 ,  F16C33/62

CPC classification number: F16C33/64 ,  F16C19/163 ,  F16C19/548 ,  F16C33/32 ,  F16C33/3713 ,  F16C33/62 ,  F16C2206/04 ,  H01J35/101 ,  H01J2235/1006 ,  H01J2235/1046 ,  H01J2235/1066 ,  H01J2235/108

Abstract: In a first rolling bearing of this X-ray tube apparatus, an ion nitriding layer is formed on a raceway surface of an inner ring, and an ion nitriding layer is formed on a raceway surface of an outer ring. As the results, surface hardness of the raceway surface of the inner ring and the raceway surface of the outer ring is enhanced, and abrasion resistance can be improved. On the other hand, in a second rolling bearing, an ion nitriding layer and a diamond-like carbon film are successively formed on a raceway surface of an inner ring, and an ion nitriding layer and a diamond-like carbon film are successively formed on a raceway surface of an outer ring. As the results, the second rolling bearing which is positioned closer to the target has a double hardening structure.

Abstract translation: 在该X射线管装置的第一滚动轴承中，在内圈的轨道面上形成离子渗氮层，在外圈的轨道面上形成离子渗氮层。 结果，提高了内圈的轨道面和外圈的轨道面的表面硬度，并且可以提高耐磨性。 另一方面，在第二滚动轴承中，在内圈的轨道面上依次形成离子渗氮层和类金刚石碳膜，并且在第二滚动轴承上依次形成离子氮化层和类金刚石碳膜 外圈的滚道表面。 结果，位于更靠近目标的第二滚动轴承具有双重硬化结构。

公开(公告)号：US20080226032A1

公开(公告)日：2008-09-18

申请号：US11687410

申请日：2007-03-16

Applicant: Baojun Li ,  Jiang Hsieh

Inventor： Baojun Li ,  Jiang Hsieh

IPC: H01J35/00

CPC classification number: G01T1/2985

Abstract: An imaging system includes a two-dimensional detector having a plurality of cells wherein each cell is configured to detect energy or signal passing through an object. The imaging system includes a computer programmed to acquire imaging data for the plurality of cells, identify a cell to be corrected, based on the imaging data, interpolate Ix and Iy for the identified cell based on neighbor cells, and calculate local gradients gx and gy between the identified cell and its neighbor cells based on the interpolation. The computer is further programmed to calculate weighting factors wx and wy based on the local gradients, calculate a corrected final value I(0,0) for the identified cell, and correct the identified cell with the corrected final value.

Abstract translation: 成像系统包括具有多个单元的二维检测器，其中每个单元被配置为检测通过物体的能量或信号。 成像系统包括被编程为获取多个单元的成像数据的计算机，基于成像数据来识别要校正的单元，插入I X和I Y 对于基于相邻小区的所识别的小区，并且基于所述插值来计算所识别的小区与其相邻小区之间的本地梯度g x1和g y y y。 计算机进一步被编程为基于局部梯度来计算加权因子w x x和w y y，计算所识别的单元的校正后的最终值I（0,0） 并用校正的最终值校正所识别的单元。

公开(公告)号：US20080159480A1

公开(公告)日：2008-07-03

申请号：US11611441

申请日：2006-12-15

Applicant: Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

Inventor： Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

IPC: G01B15/02 ,  H01J35/00

CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J2235/0233 ,  H01J2235/06 ,  H01J2235/163 ,  H05G1/02 ,  H05G1/10

Abstract: An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 260 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

Abstract translation: 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括稳定的紧凑型x射线发生器，其能够在等于或大于125℃的温度下工作时提供260keV或更高能量的辐射。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。

公开(公告)号：US07394891B2

公开(公告)日：2008-07-01

申请号：US11509670

申请日：2006-08-25

Applicant: Noriyoshi Sakabe

Inventor： Noriyoshi Sakabe

IPC: H01J35/00

CPC classification number: H01J35/106 ,  H01J35/26 ,  H01J35/28 ,  H01J2235/086

Abstract: An anticathode is repeatedly moved along a rotating axis of the anticathode while the anticathode is rotated around the rotating axis. Then, energy beams are irradiated onto a surface portion of the anticathode which is located against a centrifugal force generated from the rotation of the anticathode to partially melt the surface portion through the heating said surface portion near the melting point of the anticathode or over the melting point of the anticathode, thereby generating an X-ray from the rotating anticathode.

Abstract translation: 在抵抗旋转轴旋转的同时，反方向沿反方向的旋转轴重复移动。 然后，将能量束照射在抗阴茎的表面部分上，该抗阴离子的表面部分抵抗由抗阴茎旋转产生的离心力，以通过加热所述表面部分熔化表面部分，所述表面部分靠近抗阴茎的熔点或熔化 从而产生来自旋转抗阴茎的X射线。

公开(公告)号：US07388944B2

公开(公告)日：2008-06-17

申请号：US11529102

申请日：2006-09-28

Applicant: Eckhard Hempel ,  Detlef Mattern ,  Stefan Popescu

Inventor： Eckhard Hempel ,  Detlef Mattern ,  Stefan Popescu

IPC: H01J35/00

CPC classification number: H01J35/065 ,  H01J3/00 ,  H01J35/14 ,  H01J35/26 ,  H01J35/305 ,  H01J2235/062 ,  H01J2235/066 ,  H01J2235/1212 ,  H01J2235/162 ,  H01J2235/168

Abstract: A device for generation of x-ray radiation has one or more cold electron sources as a cathode and at least one x-ray target as an anode that are arranged in an evacuable housing. Upon application of an electrical voltage between cathode and anode, electrons emitted from the electron source are accelerated in an electron beam onto the x-ray target. A device for reduction of the proportion of positive ions in the region of the electron source is arranged between the electron source and the x-ray target in the housing. The device exhibits a long lifespan with good focusing capability and fast modulation capability of the electron beam.

Abstract translation: 用于产生x射线辐射的装置具有一个或多个冷电子源作为阴极，并且至少一个x射线靶作为阳极布置在可抽出的壳体中。 在阴极和阳极之间施加电压时，从电子源发射的电子以电子束的速度被加速到x射线靶上。 电子源区域中的正离子的比例减少的装置被布置在壳体中的电子源和x射线靶之间。 该器件具有长的寿命，具有良好的聚焦能力和电子束的快速调制能力。