公开(公告)号：US09615438B2

公开(公告)日：2017-04-04

申请号：US14758484

申请日：2013-11-21

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun Kang ,  Chuanxiang Tang ,  Ziran Zhao ,  Zhe Zhang

IPC: H01J35/04 ,  H05G1/10 ,  H01J35/06 ,  H01J35/08 ,  G01N23/04 ,  A61B6/03 ,  A61B6/00

CPC classification number: H05G1/10 ,  A61B6/032 ,  A61B6/40 ,  A61B6/4064 ,  G01N23/046 ,  G01N2223/308 ,  G01N2223/419 ,  H01J35/06 ,  H01J35/08 ,  H01J2235/086

Abstract: CT devices and methods thereof are disclosed. The CT device comprises a circular electron beam emission array including a plurality of electron beam emission units that are distributed uniformly along a circle, wherein each electron beam emission unit emits electron beams that are substantially parallel to an axis of the circular electron beam emission array in sequence under the control of a control signal; a circular reflection target which is disposed to be coaxial with the circular electron beam emission array, wherein the electron beams bombard the circular reflection target to generate X-rays that intersect the axis of the circular electron beam emission array; and a circular detector array which is disposed to be coaxial with the circular reflection target and configured to include a plurality of detection units which receive the X-rays after they have passed through an object to be detected.

公开(公告)号：US20170053771A1

公开(公告)日：2017-02-23

申请号：US15230276

申请日：2016-08-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG

IPC: H01J35/06 ,  H01J35/08

CPC classification number: H01J35/065 ,  H01J35/045 ,  H01J35/16 ,  H01J2235/168

Abstract: Disclosed is an X-ray source, including: a cathode; an anode positioned on the cathode so as to face the cathode; emitters formed on the cathode; a gate electrode positioned between the cathode and the anode and including openings at positions corresponding to those of the emitters; an insulating spacer formed between the gate and the anode; and a coating layer formed on an internal wall of the insulating spacer, and including a material having a lower secondary electron emission coefficient than that of the insulating spacer.

Abstract translation: 公开了一种X射线源，包括：阴极; 阳极，其位于阴极上以面对阴极; 在阴极上形成的发射体; 位于阴极和阳极之间的栅电极，并且在对应于发射器的位置处包括开口; 形成在栅极和阳极之间的绝缘间隔物; 以及形成在所述绝缘间隔物的内壁上的涂层，并且包括具有比所述绝缘间隔物的二次电子发射系数低的二次电子发射系数的材料。

公开(公告)号：US09570264B2

公开(公告)日：2017-02-14

申请号：US14241417

申请日：2012-08-29

Applicant: Takao Ogura ,  Yasue Sato

Inventor： Takao Ogura ,  Yasue Sato

IPC: H01J35/02 ,  H01J35/08 ,  G01N23/04 ,  H01J35/14

CPC classification number: H01J35/02 ,  G01N23/04 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/087 ,  H01J2235/186

Abstract: Provided is an X-ray generator which includes:an electron path 8; a target 9c disposed on a substrate 9a, in which electrons having passed through the electron path 8 are made to emit at the target 9c and to generate an X-ray, wherein: the target 9c is disposed at the central area of the substrate 9a; at least a part of a peripheral area of the substrate 9a which is not covered with the target 9c has higher transmittance than that of the central area of the substrate 9a covered with the target 9c, with respect to the X-ray generated when electrons having reflected from the target enter an inner wall of the electron path. X-ray generation efficiency may be improved by effectively using electrons reflected off the target 9c.

Abstract translation: 电子通路8; 设置在基板9a上的目标9c，其中通过电子通道8的电子在靶9c处发射并产生X射线，其中：靶9c设置在基板9a的中心区域 ; 基板9a的未被靶9c覆盖的周边区域的至少一部分相对于被靶9c覆盖的基板9a的中心区域的透射率的透射率高于电子具有的X射线 从目标反射进入电子通道的内壁。 可以通过有效地使用从靶9c反射的电子来提高X射线产生效率。

公开(公告)号：US20170027531A1

公开(公告)日：2017-02-02

申请号：US15039658

申请日：2014-09-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takashi Shiozawa ,  Kazuyuki Ueda ,  Kazuya Tsujino ,  Nobuhiro Ito

IPC: A61B6/10 ,  A61B6/04 ,  H01J35/06 ,  H01J35/16 ,  H01J35/08 ,  A61B6/02 ,  A61B6/00

CPC classification number: A61B6/107 ,  A61B6/025 ,  A61B6/0414 ,  A61B6/4007 ,  A61B6/405 ,  A61B6/42 ,  A61B6/502 ,  H01J35/06 ,  H01J35/08 ,  H01J35/16 ,  H01J2235/068 ,  H01J2235/087

Abstract: A radiographic apparatus includes a target array and an X-ray detecting unit. The target array includes a plurality of targets and a forward shielding member. The X-ray detecting unit includes a detecting portion. The X-ray detecting unit further includes a shielding portion extending toward an outer side of the detecting portion along an array direction in which the targets are arrayed.

Abstract translation: 射线照相设备包括目标阵列和X射线检测单元。 目标阵列包括多个目标和前向屏蔽部件。 X射线检测单元包括检测部。 X射线检测单元还包括沿着排列靶的排列方向朝向检测部的外侧延伸的遮蔽部。

公开(公告)号：US09530607B2

公开(公告)日：2016-12-27

申请号：US14457385

申请日：2014-08-12

Applicant: EXCILLUM AB

Inventor： Oscar Hemberg ,  Tomi Tuohimaa ,  Mikael Otendal

IPC: H01J35/02 ,  H01J35/08 ,  G03F7/20 ,  H01J35/12 ,  H05G2/00

CPC classification number: H01J35/08 ,  G03F7/70033 ,  H01J35/12 ,  H01J2235/082 ,  H01J2235/1204 ,  H01J2235/1279 ,  H05G2/003 ,  H05G2/008

Abstract: Closed-loop circulation for providing liquid metal to an interaction region at which an electron beam is to impact upon the liquid metal to produce X-rays is presented. In a method, the pressure of the liquid metal is raised to at least 10 bar using a high-pressure pump. The pressurized liquid metal is then conducted to a nozzle and ejected into a vacuum chamber in the form of a spatially continuous jet. After passage through the vacuum chamber, the liquid metal is collected in a collection reservoir, and the pressure of the liquid metal is raised to an inlet pressure, e.g. using a primer pump, suitable for the inlet of the high-pressure pump. Also, a corresponding circulation system and an X-ray source provided with such circulation system.

Abstract translation: 提出了用于将液体金属提供到电子束将冲击液态金属以产生X射线的相互作用区域的闭环循环。 在一种方法中，使用高压泵将液态金属的压力提高至至少10巴。 然后将加压液体金属传导到喷嘴并以空间连续射流的形式喷射到真空室中。 在通过真空室之后，将液态金属收集在收集容器中，并且将液态金属的压力升高到入口压力，例如， 使用底漆泵，适用于高压泵的入口。 另外，具有这样的循环系统的相应的循环系统和X射线源。

公开(公告)号：US09508523B2

公开(公告)日：2016-11-29

申请号：US14214811

申请日：2014-03-15

Applicant: Mark F Eaton ,  Mark Lucente

Inventor： Mark F Eaton ,  Mark Lucente

IPC: H01J35/08 ,  G21K1/02

CPC classification number: H01J35/08 ,  G21K1/02 ,  H01J2235/086 ,  H01J2235/18

Abstract: This invention provides a source of x-ray flux in which x-rays are produced by e-beams impacting the inner walls of holes or channels formed in a metal anode such that most of the electrons reaching the channel impact an upper portion of said channel. A portion of the electrons from this primary impact will generate x-rays. Most of the electrons scatter but they continue to ricochet down the channel, most of them generating x-rays, until the beam is spent. A single channel source of high power efficiency and high power level x-rays may be made in this way, or the source can be of an array of such channels, to produce parallel collimated flux beams of x-rays.

Abstract translation: 本发明提供一种X射线通量的源，其中通过撞击在金属阳极中形成的孔或通道的内壁的电子束产生X射线，使得到达通道的大部分电子冲击所述通道的上部 。 来自该主要冲击的电子的一部分将产生x射线。 大多数电子散射，但是它们继续向下流动通道，大多数电子产生X射线，直到光束消耗。 可以以这种方式制造高功率效率和高功率级X射线的单通道源，或者源可以是这种通道的阵列，以产生平行准直的X射线束。

公开(公告)号：US09484178B2

公开(公告)日：2016-11-01

申请号：US14687749

申请日：2015-04-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Shuji Yamada ,  Tadayuki Yoshitake ,  Yoichi Ikarashi ,  Takao Ogura ,  Takeo Tsukamoto

IPC: H01J35/08 ,  H01J35/16 ,  G21K1/02 ,  H05G1/06

CPC classification number: H01J35/08 ,  G21K1/02 ,  H01J35/16 ,  H01J2235/081 ,  H01J2235/087 ,  H01J2235/166 ,  H05G1/06

Abstract: The target includes a target layer configured to be irradiated with an electron to generate an X-ray and a support substrate configured to support the target layer. The support substrate includes a polycrystalline diamond and includes multiple structure planes having different area densities of plane orientations from one another. The target layer is supported by the support substrate at a structure plane with a smaller area density of the {101} plane than the area density of the {100} plane and the area density of the {111} plane.

Abstract translation: 目标包括配置为用电子照射以产生X射线的目标层和被配置为支撑目标层的支撑衬底。 支撑衬底包括多晶金刚石，并且包括具有彼此的平面取向的不同面积密度的多个结构平面。 目标层在{101}面的面积密度比{100}面的面积密度和{111}面的面积密度小的结构面支撑在支撑基板上。

公开(公告)号：US20160276124A1

公开(公告)日：2016-09-22

申请号：US15068700

申请日：2016-03-14

Applicant: Kabushiki Kaisha Toshiba ,  Toshiba Electron Tubes & Devices Co., Ltd.

Inventor： Takeshi KATO

IPC: H01J35/06 ,  H01J35/08

CPC classification number: H01J35/06 ,  H01J35/165

Abstract: According to one embodiment, an X-ray tube includes a cathode, an anode target and an envelope. The cathode includes an insulating member, a conductive line, a pin assembly, a filament, a focusing electrode, and a terminal assembly. The conductive line is formed on the insulating member. The pin assembly includes a pin and a first sleeve. The terminal assembly is fixed to the insulating member, is supporting the filament, and is electrically connecting the filament to the conductive line.

Abstract translation: 根据一个实施例，X射线管包括阴极，阳极靶和外壳。 阴极包括绝缘构件，导电线，销组件，灯丝，聚焦电极和端子组件。 导电线形成在绝缘构件上。 销组件包括销和第一套筒。 端子组件被固定到绝缘构件上，正在支撑灯丝，并将灯丝电连接到导线上。

公开(公告)号：US20160247656A1

公开(公告)日：2016-08-25

申请号：US15147394

申请日：2016-05-05

Applicant: Excillum AB

Inventor： Oscar HEMBERG ,  Tomi TUOHIMAA ,  Björn SUNDMAN

IPC: H01J35/14 ,  H01J35/08

CPC classification number: H01J35/14 ,  H01J35/08 ,  H01J2235/082 ,  H05G1/52

Abstract: A technique for indirectly measuring the degree of alignment of a beam in an electron-optical system including aligning means, focusing means and deflection means. To carry out the measurements, a simple sensor may be used, even a single-element sensor, provided it has a well-defined spatial extent. When practiced in connection with an X-ray source which is operable to produce an X-ray target, further, a technique for determining and controlling a width of an electron-beam at its intersection point with the target.

公开(公告)号：US09424958B2

公开(公告)日：2016-08-23

申请号：US14117869

申请日：2012-05-30

Applicant: Gereon Vogtmeier ,  Rainer Pietig ,  Christoph Loef ,  Martin Kimutai Duerr ,  Gerald James Carlson

Inventor： Gereon Vogtmeier ,  Rainer Pietig ,  Christoph Loef ,  Martin Kimutai Duerr ,  Gerald James Carlson

IPC: G21K1/08 ,  G21K1/10 ,  G21K1/02 ,  G01N23/04 ,  H01J35/08 ,  H01J35/30

CPC classification number: G21K1/08 ,  G01N23/04 ,  G21K1/025 ,  G21K1/10 ,  H01J35/08 ,  H01J35/30

Abstract: For the generation of multiple-energy X-ray radiation, an X-ray tube (10) for generating multiple-energy X-ray radiation includes an anode (12) and a filter (14). At least a first (16) and a second focal spot position (18) are offset from each other in an offset direction (20) transverse to an X-ray radiation projection direction. The filter includes a first plurality (22) of first portions (24) with first filtering characteristics for X-ray radiation and a second plurality (26) of second portions (28) with second filtering characteristics for X-ray radiation. The filter is a directional filter adapted in a such a way that at least a first X-ray beam (30) emanating from the first focal spot position at least partly passes through the filter unit via the first portions, and a second X-ray beam (32) emanating from the second focal spot position passes obliquely through the first and the second portions when passing through the filter unit.

Abstract translation: 为了产生多能量X射线辐射，用于产生多能X射线辐射的X射线管（10）包括阳极（12）和过滤器（14）。 至少第一（16）和第二焦斑位置（18）在横向于X射线辐射投影方向的偏移方向（20）上彼此偏移。 滤波器包括具有用于X射线辐射的第一滤波特性的第一多个第一部分（22）和具有用于X射线辐射的第二滤波特性的第二多个第二部分（26）。 过滤器是一种定向过滤器，其适于使得从第一焦点位置发出的至少第一X射线束（30）至少部分地经由第一部分穿过过滤器单元，并且第二X射线 从第二焦点位置发出的光束（32）在通过过滤器单元时倾斜地穿过第一和第二部分。