公开(公告)号：US20170213685A1

公开(公告)日：2017-07-27

申请号：US15233198

申请日：2016-08-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jun Tae KANG ,  Yoon-Ho SONG ,  Jae-Woo KIM ,  Jin-Woo JEONG

IPC: H01J35/06

CPC classification number: H01J37/063 ,  H01J7/18 ,  H01J7/186 ,  H01J9/39 ,  H01J19/48 ,  H01J21/20 ,  H01J29/46 ,  H01J29/488 ,  H01J29/50 ,  H01J35/06 ,  H01J35/065 ,  H01J35/165 ,  H01J35/20 ,  H01J2201/196 ,  H01J2201/317 ,  H01J2209/385 ,  H01J2209/3893 ,  H01J2229/4827 ,  H01J2229/4831 ,  H01J2229/94 ,  H01J2235/068 ,  H01J2235/205 ,  H01J2237/032 ,  H01J2237/036 ,  H01J2237/06375 ,  H01J2237/1825

Abstract: Disclosed is an x-ray tube including a hybrid electron emission source, which uses, as an electron emission source, a cathode including both a field electron emission source and a thermal electron emission source. An x-ray tube includes an electron emission source emitting an electron beam, and a target part including a target material that emits an x-ray as the emitted electron beam collides with the target part, wherein the electron emission source includes a thermal electron emission source and a field electron emission source, and emits the electron beam by selectively using at least one of the thermal electron emission source and the field electron emission source.

公开(公告)号：US09653251B2

公开(公告)日：2017-05-16

申请号：US14490526

申请日：2014-09-18

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Chuanxiang Tang ,  Huaping Tang ,  Huaibi Chen ,  Wenhui Huang ,  Huayi Zhang ,  Shuxin Zheng

IPC: H01J35/06 ,  H01J35/14 ,  H01J35/12 ,  H05G1/32 ,  H01J35/16

CPC classification number: H01J35/14 ,  H01J35/06 ,  H01J35/12 ,  H01J35/16 ,  H01J2235/068 ,  H01J2235/086 ,  H01J2235/087 ,  H05G1/32

Abstract: The present application provides an external thermionic cathode distributed x-ray apparatus, including a vacuum box which is sealed at its periphery, where the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the side wall of the vacuum box, where each electron transmitting unit is independent to each other; an anode installed in the center inside the vacuum box, where in the direction of length, the anode is parallel to the orientation of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the electron transmitting unit; a power supply and control system having a high voltage power supply and a focusing power supply; and a transmitting control means and a control system.

公开(公告)号：US20170135189A1

公开(公告)日：2017-05-11

申请号：US15273486

申请日：2016-09-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG

IPC: H05G1/30 ,  H05G1/10 ,  H01J35/14 ,  H01J35/06 ,  H01J35/08

CPC classification number: H05G1/30 ,  A61B6/00 ,  A61B6/032 ,  A61B6/4007 ,  H01J35/06 ,  H01J35/065 ,  H01J35/08 ,  H01J35/14 ,  H05G1/10 ,  H05G1/56 ,  H05G1/62

Abstract: Provided herein is a radiography apparatus including an X-ray source configured to irradiate a subject radiation, and a sensing module configured to sense the radiation having passed through the subject, wherein the X-ray source includes a cathode electrode comprising an electric field emitting source configured to emit electrons, an anode electrode disposed opposite to the cathode electrode and configured to use the electrons to generate the radiation, and a current control unit connected to the cathode electrode to control an amount of the electrons.

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：US09601300B2

公开(公告)日：2017-03-21

申请号：US13638600

申请日：2010-04-09

Applicant: Eberhard Neuser ,  Andreas Schmitt ,  Wolfgang Sperner

Inventor： Eberhard Neuser ,  Andreas Schmitt ,  Wolfgang Sperner

IPC: H01J35/00 ,  H01J35/06 ,  H01J1/16 ,  H01J35/14

CPC classification number: H01J35/06 ,  H01J1/16 ,  H01J35/14

Abstract: A cathode element for a microfocus x-ray tube includes a heatable filament formed of a wire for thermionic emission of electrons for generating an electron beam. The filament, in a source area of the electron beam, has an elongate extension in two directions perpendicular to the electron beam.

公开(公告)号：US20170053770A1

公开(公告)日：2017-02-23

申请号：US15240054

申请日：2016-08-18

Applicant: SIEMENS HEALTHCARE GMBH

Inventor： CHRISTIAN RIEDL

IPC: H01J35/06

CPC classification number: H01J35/06

Abstract: An emitter arrangement contains at least one emitter and at least one vaporizer element spaced apart therefrom. At least one of the emitters contains at least one emission surface made of at least one first electron emission material and lies at a first potential. At least one of the vaporizer elements contains one evaporation surface made of at least one second electron emission material and lies at a second potential. Thus, the emitter arrangement has a compact configuration and a longer lifetime with simultaneously good emission properties.

Abstract translation: 发射器装置包含至少一个发射极和与其隔开的至少一个蒸发器元件。 发射体中的至少一个包含由至少一个第一电子发射材料制成的至少一个发射表面并且位于第一电位。 蒸发器元件中的至少一个包含由至少一个第二电子发射材料制成的一个蒸发表面，并且位于第二电位。 因此，发射极布置具有紧凑的结构和更长的寿命，同时具有良好的发射性能。

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：US09530603B1

公开(公告)日：2016-12-27

申请号：US14922241

申请日：2015-10-26

Applicant: Shimadzu Corporation

Inventor： Takumi Kobayashi

IPC: H01J9/02 ,  H01J1/16 ,  H01J35/06

CPC classification number: H01J1/16 ,  H01J35/06

Abstract: A flat emitter comprises four current-supply heating legs. Half lighting for a small focus in which a current is supplied to heat only a region narrower and full lighting for a large focus in which a current is supplied to heat the entire region are selectable according to the combination of the legs. Either one of a set of the two full-lighting current-supply heating legs for the full lighting and a set of the two half-lighting current-supply heating legs for the half lighting is linearly formed, and the other is formed to be bent plural times in zigzag to set the space between the full-lighting current-supply heating leg and the half-lighting current-supply heating leg, which are adjacent to each other, at their terminals to be larger than the space at their base parts.

Abstract translation: 扁平发射器包括四个电流供应加热支路。 根据腿部的组合，可以选择用于小焦点的半光照明，其中电流被供应以仅加热区域较窄且全面照明，其中提供电流以加热整个区域的大焦点。 用于全光照射的两组全光照明电流供热支架中的一组和用于半光照明的两个半照明电流供热支架的一个线性地形成，另一个形成为弯曲 以Z字形多次，将彼此相邻的全光供电加热腿与半点灯供电加热腿之间的空间设定为大于其基部的空间。

公开(公告)号：US20160324494A1

公开(公告)日：2016-11-10

申请号：US15104024

申请日：2014-12-16

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ewald ROESSL ,  Heiner DAERR ,  Thomas KOEHLER

IPC: A61B6/00 ,  H05G1/56 ,  H01J35/06 ,  A61B6/03 ,  H01J35/10

CPC classification number: A61B6/4241 ,  A61B6/032 ,  A61B6/035 ,  A61B6/405 ,  A61B6/482 ,  A61B6/542 ,  G01T1/247 ,  H01J35/06 ,  H01J35/10 ,  H01J2235/086 ,  H05G1/56 ,  H05G1/60

Abstract: An imaging system (100) includes a radiation source (110) with a focal spot (204) that emits a beam of x-ray photons that traverses an examination region (106). The imaging system further includes a photon counting detector array (122) that detects a sub-set of the x-ray photons that traverse an examination region. The imaging system further includes a controller (116) that generates and transmits a pause signal, in response to a calculated drop in an intensity of the emitted the beam of x-ray photons below a predetermined intensity level, which causes the photon counting detector array to pause detecting the sub-set of the x-ray photons. The imaging system further includes a counter (136) that counts, for each of a plurality of counting periods, the x-ray photons of the sub-set detected by the photon counting detector array in the corresponding counting period.

Abstract translation: 成像系统（100）包括具有发射穿过检查区域（106）的x射线光子束的焦点（204）的辐射源（110）。 成像系统还包括光子计数检测器阵列（122），其检测穿过检查区域的x射线光子的子集。 成像系统还包括控制器（116），其响应于计算出的低于预定强度水平的x射线光子束的发射强度的下降，产生和发送暂停信号，这导致光子计数检测器阵列 暂停检测x射线光子的子集。 成像系统还包括计数器（136），对于多个计数周期中的每个计数周期，计数在相应的计数周期内由光子计数检测器阵列检测的子集的x射线光子。

公开(公告)号：US09484179B2

公开(公告)日：2016-11-01

申请号：US13718285

申请日：2012-12-18

Applicant: General Electric Company

Inventor： Mark Alan Frontera ,  Peter Andras Zavodszky

IPC: H01J35/14 ,  H01J35/06 ,  H01J35/04 ,  A61B6/03

CPC classification number: H01J35/14 ,  A61B6/032 ,  H01J35/045 ,  H01J35/06

Abstract: An X-ray tube includes an emitter, and an electrode assembly. The emitter is configured to emit an electron beam toward a target. The electrode assembly includes at least one electrode having a bias voltage with respect to the emitter. At least one electrode of the electrode assembly is a segmented electrode including a plurality of segments. The plurality of segments includes a first member and a second member. The first member is configured to have a first bias voltage and the second member is configured to have a second bias voltage that is different from the first bias voltage.

Abstract translation: X射线管包括发射器和电极组件。 发射极被配置为向靶发射电子束。 电极组件包括至少一个具有相对于发射极的偏置电压的电极。 电极组件的至少一个电极是包括多个段的分段电极。 多个段包括第一构件和第二构件。 第一构件被配置为具有第一偏置电压，并且第二构件被配置为具有不同于第一偏置电压的第二偏置电压。