公开(公告)号：US08792610B2

公开(公告)日：2014-07-29

申请号：US13081022

申请日：2011-04-06

Applicant: Hiroaki Miyazaki

Inventor： Hiroaki Miyazaki

IPC: G01N23/083 ,  H05G1/64 ,  H01J35/02

CPC classification number: A61B6/4021 ,  A61B6/5282

Abstract: An apparatus for X-ray CT imaging including an X-ray irradiation unit configured to irradiate an X-ray toward a subject, an X-ray detector having a plurality of X-ray detection elements along a channel direction and a row direction, a couch on which the subject can be arranged, a rotation unit on which the X-ray irradiation unit and the X-ray detector are oppositely disposed and rotate around the couch, a controller configured to execute a helical scan while fluctuating an X-ray focal spot along a body axis direction of the subject by controlling the X-ray irradiation unit, and an image processing unit configured to generate a reconstructed image based on data acquired by the helical scan, wherein the controller is further configured to set a magnitude of fluctuation of the X-ray focal spot so that data acquisition loci of the helical scan do not overlap each other.

Abstract translation: 一种X射线CT成像装置，其特征在于，包括：X射线照射部，被配置为向被检体照射X射线; X射线检测器，沿着通道方向和行方向具有多个X射线检测元件， 可以配置被摄体的沙发，旋转单元，X射线照射单元和X射线检测器相对设置并围绕着沙发旋转;控制器，被配置为在使X射线焦点变动的同时执行螺旋扫描 通过控制X射线照射单元沿着被​​检体的身体轴线方向进行斑点的图像处理单元;以及图像处理单元，被配置为基于通过螺旋扫描获取的数据来生成重建图像，其中，所述控制器还被配置为设定波动幅度 的X射线焦斑，使得螺旋扫描的数据采集轨迹彼此不重叠。

公开(公告)号：US20140205072A1

公开(公告)日：2014-07-24

申请号：US13733925

申请日：2013-01-04

Applicant: General Electric Company

Inventor： Saijun MAO ,  Denis Perrillat-Amede ,  Philippe Ernest ,  Niranjan Kumar ,  Xu Chu

IPC: H02M7/10 ,  H01J35/02

CPC classification number: H02M7/103 ,  H01J35/025 ,  H05G1/10

Abstract: A power generation system includes an input to receive a low-voltage alternating current and a number N of voltage-conversion modules coupled to the input, each electrically connected in series. Each voltage-conversion module includes a transformer configured to convert the low-voltage alternating current into a high-voltage alternating current. Each voltage-conversion module includes a multiplier configured to convert the high-voltage alternating current from the transformer into a high-voltage direct current. The multiplier includes a positive multiplier part and a negative multiplier part. The positive multiplier part and the negative multiplier part each includes a pair of input terminals connected in parallel with the transform and at least one multiplier stage comprising a single diode and a capacitor assembly. The number N is an even number between 4 and 24.

Abstract translation: 发电系统包括用于接收低电压交流电的输入和耦合到输入的数个N个电压转换模块，每个电压转换模块串联电连接。 每个电压转换模块包括被配置为将低压交流电转换成高压交流电的变压器。 每个电压转换模块包括被配置为将来自变压器的高压交流电转换成高压直流电的乘法器。 乘法器包括正乘数和负乘数。 正乘法器部分和负乘法器部分各自包括与变换并联连接的一对输入端子以及包括单个二极管和电容器组件的至少一个乘法器级。 数字N是4到24之间的偶数。

公开(公告)号：US20140112449A1

公开(公告)日：2014-04-24

申请号：US13654584

申请日：2012-10-18

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yun Zou ,  Scott Stephen Zelakiewicz ,  Floribertus P. M. Heukensfeldt Jansen ,  Mark Alan Frontera ,  Jeffrey Wayne Eberhard ,  Fengfeng Tao ,  Xi Zhang

IPC: G21K1/02 ,  H01J35/02

CPC classification number: H01J35/14 ,  G21K1/04

Abstract: An apparatus and method for providing a predefined x-ray field is presented. Briefly in accordance with one aspect of the present disclosure, the apparatus includes a cathode unit configured to emit electrons within a vacuum chamber. The apparatus further includes an anode unit configured to generate x-rays when the emitted electrons impinge on a target surface of the anode unit. Also, the apparatus includes a collimating unit comprising a primary set of blades disposed in the vacuum chamber at a first distance from the anode unit for collimating the generated x-rays to provide the predefined x-ray field at a detector.

Abstract translation: 提出了一种用于提供预定x射线场的装置和方法。 简要地，根据本公开的一个方面，该装置包括被配置为在真空室内发射电子的阴极单元。 该装置还包括阳极单元，其被配置为当发射的电子撞击阳极单元的目标表面时产生X射线。 此外，该装置包括准直单元，该准直单元包括设置在与阳极单元隔开第一距离的真空室中的初级叶片组，用于准直所产生的X射线以在检测器处提供预定的X射线场。

公开(公告)号：US20130182826A1

公开(公告)日：2013-07-18

申请号：US13741754

申请日：2013-01-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuyuki Ueda ,  Koji Yamazaki

IPC: H01J35/02

CPC classification number: H01J35/02 ,  H05G1/025

Abstract: Radiation generating apparatus includes an envelope and a radiation tube disposed inside the envelop. A cooler is connected to the envelope at an inlet port and an outlet port. Coolant circulates between the cooler and the envelope through the inlet port and outlet port. A partition plate divides the inside of the envelope into a first chamber on the side of the radiation tube and a second chamber on the side of the inlet port. An air bubble chamber provided at an upper portion of the second chamber collects air bubbles formed in the coolant. A protrusion projecting toward the second chamber is provided at an end of the partition plate on the side of the opening. Since the air bubbles are moved due to buoyancy force or inertial force when the apparatus is rotated, it is possible to prevent radiation from passing through the air bubbles.

Abstract translation: 辐射发生装置包括外壳和设置在封套内的辐射管。 冷却器在入口端口和出口端口连接到信封。 冷却液通过入口和出口在冷却器和信封之间循环。 分隔板将封套的内部分成放射管侧的第一室和在入口侧的第二室。 设置在第二室的上部的气泡室收集形成在冷却剂中的气泡。 在分隔板的开口侧的端部设置有朝向第二室突出的突起。 由于当设备旋转时气泡由于浮力或惯性力而移动，所以可以防止辐射通过气泡。

公开(公告)号：US08197136B2

公开(公告)日：2012-06-12

申请号：US12820366

申请日：2010-06-22

Applicant: Thorsten Buettner ,  Rita Krug ,  Andreas Speck

Inventor： Thorsten Buettner ,  Rita Krug ,  Andreas Speck

IPC: H05G1/02 ,  H01J35/02

CPC classification number: A61B6/032 ,  A61B6/4488

Abstract: A tomography apparatus has an annular channel and at least one ventilation element for the purpose of drawing off an air current flowing through the annular channel. The ventilation element contains an intake window that is located in the annular channel for the purpose of drawing off at least a portion of the air current. In order to obtain an even flow profile at an output window of the ventilation element, the intake window has a greater effective intake cross-section at both sides than at the middle. By such evening the flow profile at the output window, turbulence and air current interruptions of the air can be generally avoided, such that when operating the tomography apparatus, disrupting acoustic emissions may be reduced, or a higher air flow and thereby a greater cooling effect may be obtained.

Abstract translation: 断层摄影装置具有环形通道和至少一个通风元件，用于抽出流过环形通道的气流。 通风元件包括位于环形通道中的进气窗口，用于抽出气流的至少一部分。 为了在通风元件的输出窗口处获得均匀流动分布，进气窗在两侧比在中间具有更大的有效进气横截面。 通过这样的晚上，通常可以避免在输出窗口处的流动分布，空气的湍流和空气流中断，使得当操作断层摄影装置时，可以减少干扰声发射或者更高的气流，从而获得更大的冷却效果 可以获得。

公开(公告)号：US20120106712A1

公开(公告)日：2012-05-03

申请号：US12915898

申请日：2010-10-29

Applicant: Ian Strider Hunt ,  Donald Robert Allen ,  Kenwood Dayton ,  Andrew Triscari

Inventor： Ian Strider Hunt ,  Donald Robert Allen ,  Kenwood Dayton ,  Andrew Triscari

IPC: H01J35/02 ,  B23P11/00

CPC classification number: H01J35/26 ,  H01J9/18 ,  H01J35/101 ,  H01J2235/106 ,  H01J2235/1086 ,  Y10T29/49826

Abstract: The present disclosure is directed towards the prevention of high voltage instabilities within X-ray tubes. For example, in one embodiment, an X-ray tube is provided. The X-ray tube generally includes a stationary member, and a rotary member configured to rotate with respect to the stationary member during operation of the X-ray tube. The X-ray tube also includes a liquid metal bearing material disposed in a space between the shaft and the sleeve, a seal disposed adjacent to the space to seal the liquid metal bearing material in the space, and an enhanced surface area material disposed on a side of the seal axially opposite the space and configured to trap within the enhanced surface area material liquid metal bearing material that escapes the seal.

Abstract translation: 本公开旨在防止X射线管内的高电压不稳定性。 例如，在一个实施例中，提供了X射线管。 X射线管通常包括固定构件，以及构造成在X射线管操作期间相对于静止构件旋转的旋转构件。 X射线管还包括设置在轴和套筒之间的空间中的液体金属轴承材料，邻近空间设置的密封件，以密封空间中的液态金属轴承材料，以及增强的表面积材料 所述密封件的侧面与所述空间轴向相对并且构造成在所述增强的表面区域内陷入材料，所述材料液体金属轴承材料逸出所述密封件。

公开(公告)号：US20120027181A1

公开(公告)日：2012-02-02

申请号：US13263065

申请日：2010-04-05

Applicant: Mikio Takai ,  Toshiyuki Ishida

Inventor： Mikio Takai ,  Toshiyuki Ishida

IPC: H01J35/02

CPC classification number: H01J35/065 ,  H01J35/06 ,  H01J2235/062 ,  H05G2/00

Abstract: Disclosed is an X-ray generator (1) comprised of an electron emission element (10) which receives energy to emit electrons; a metal piece (20) which receives the electrons emitted from the electron emission element (10) to emit an X-ray; and energy supply portions (3, 5) which supply energy to the electron emission element (10), wherein the energy supply portions (3, 5) irradiate a pyroelectric element functioning as an electron emission element with, for example, ultraviolet pulsed light, and a high-energy local portion is formed in the pyroelectric element. Thus, the X-ray generator wherein the size thereof can be reduced, and an on/off control for the generation of X-ray can be easily performed, can be provided.

Abstract translation: 公开了一种由能够发射电子的电子发射元件（10）组成的X射线发生器（1） 接收从电子发射元件（10）发射的电子发射X射线的金属片（20）; 以及向电子发射元件（10）供应能量的能量供应部分（3,5），其中能量供应部分（3,5）用例如紫外线脉冲光照射用作电子发射元件的热电元件， 并且在热电元件中形成高能局部部分。 因此，可以容易地进行其尺寸减小的X射线发生器和用于产生X射线的开/关控制。

公开(公告)号：US20110087062A1

公开(公告)日：2011-04-14

申请号：US12900525

申请日：2010-10-08

Applicant: Mathias Hörnig ,  Michael Maschke

Inventor： Mathias Hörnig ,  Michael Maschke

IPC: A61N5/10 ,  H01J35/02

CPC classification number: H01J35/065 ,  H01J35/32 ,  H01J2201/30469

Abstract: A miniature X-ray tube for intravascular or intracorporeal radiation treatment in living beings is proposed. The X-ray tube comprises a cylindrical housing section with a longitudinal axis. The miniature X-ray tube also comprises a cylindrical or cylindrical-tube-shaped first field emission cathode arranged concentrically about the longitudinal axis in the housing with a plurality of carbon nanotubes which emit electrons radially outward. The miniature X-ray tube also comprises a second field emission cathode in the housing with a plurality of carbon nanotubes which emit electrons in the direction of longitudinal axis. The miniature X-ray tube only emits little heat and is robust against mechanical stresses.

Abstract translation: 提出了一种用于生物体内或体外辐射治疗的微型X射线管。 X射线管包括具有纵向轴线的圆柱形壳体部分。 微型X射线管还包括圆柱形或圆柱形管状的第一场致发射阴极，其围绕壳体中的纵向轴线同心地布置有多个径向向外发射电子的碳纳米管。 微型X射线管还包括壳体中的第二场致发射阴极，其具有沿纵轴方向发射电子的多个碳纳米管。 微型X射线管只发出很少的热量，并且对机械应力是坚固的。

公开(公告)号：US07881436B2

公开(公告)日：2011-02-01

申请号：US12119281

申请日：2008-05-12

Applicant: Carey Shawn Rogers ,  Richard Michael Roffers

Inventor： Carey Shawn Rogers ,  Richard Michael Roffers

IPC: H01J35/02

CPC classification number: H01J35/16 ,  H01J35/101 ,  H01J2235/1086 ,  H01J2235/1204 ,  H01J2235/1262 ,  H01J2235/165 ,  H01J2235/167 ,  H01J2235/168 ,  H01J2235/20 ,  Y10T29/49826

Abstract: An x-ray tube includes an anode, a first chamber enclosing the anode and having a first pressure therein, a cathode, and a second chamber enclosing the cathode and having a second pressure therein. A separator is positioned between the first and second chambers and has a conductance limiter therein.

Abstract translation: x射线管包括阳极，封闭阳极并在其中具有第一压力的第一腔室，阴极以及封闭阴极并且在其中具有第二压力的第二腔室。 分隔件位于第一和第二室之间并且其中具有电导限制器。

公开(公告)号：US07869572B2

公开(公告)日：2011-01-11

申请号：US12116736

申请日：2008-05-07

Applicant: Donald Robert Allen ,  Brian Lounsberry ,  James J. VanBogart

Inventor： Donald Robert Allen ,  Brian Lounsberry ,  James J. VanBogart

IPC: H01J5/18 ,  H01J35/18 ,  H01J35/16 ,  H01J35/02

CPC classification number: H01J35/16 ,  H01J35/26 ,  H01J2235/1258 ,  H01J2235/168

Abstract: An x-ray tube includes a vacuum chamber, a cathode positioned within the vacuum chamber and configured to emit electrons, and an anode positioned within the vacuum chamber to receive the electrons emitted from the cathode and configured to generate a beam of x-rays from the electrons. The x-ray tube further includes a window positioned to pass the beam of x-rays therethrough, an electron collector structure having an aperture formed therein to allow passage of x-rays therethrough, and a layer attached to the electron collector structure and configured to at least partially absorb or reduce diffraction of x-rays that contact the layer.

Abstract translation: X射线管包括真空室，位于真空室内并被配置为发射电子的阴极，以及位于真空室内的阳极，用于接收从阴极发射的电子，并配置成产生一束x射线， 电子。 x射线管还包括一个定位成使X射线束通过其中的窗口，一个电子收集器结构，其具有形成在其中的孔，以允许X射线通过，以及附着到电子收集器结构的层， 至少部分地吸收或减少与层接触的X射线的衍射。