公开(公告)号：US10483077B2

公开(公告)日：2019-11-19

申请号：US15132439

申请日：2016-04-19

Applicant: Rapiscan Systems, Inc.

Inventor： Edward James Morton

IPC: H01J35/12 ,  G21K1/02 ,  H01J35/08

Abstract: This specification describes an anode for an X-ray tube with multiple channels, where each channel defines an electron aperture through which electrons from a source pass to strike a target and a collimating aperture through which X-rays produced at the target pass out of the anode as a collimated beam. At least a portion of the walls of each channel are lined with an electron absorbing material for absorbing any electrons straying from a predefined trajectory. The electron absorbing material has a low atomic number, high melting point and is stable in vacuum. Graphite may be used as the electron absorbing material.

公开(公告)号：US10468150B2

公开(公告)日：2019-11-05

申请号：US15626649

申请日：2017-06-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Carey Shawn Rogers

IPC: H01J5/18 ,  G21K1/10 ,  H01J35/08 ,  H01J35/06 ,  G21K1/02 ,  H01J35/14 ,  H01J35/16 ,  A61B6/10 ,  A61B6/00 ,  A61B6/03

Abstract: An electron collector for an electromagnetic ray generating device is provided. The electron collector includes a body having a surface configured to intercept backscattered electrons produced by an electron beam striking an anode to generate electromagnetic rays. The body is operative to absorb the backscattered electrons and is formed by particles of a first material disposed within a matrix of a second material.

公开(公告)号：US20190304734A1

公开(公告)日：2019-10-03

申请号：US16370218

申请日：2019-03-29

Applicant: FUJIFILM Corporation

Inventor： Masayoshi MATSUURA ,  Takeyasu KOBAYASHI ,  Shunsuke KODAIRA

IPC: H01J35/08 ,  H01J35/16

Abstract: An X-ray tube includes: an envelope that is a case; a cathode assembly that emits electrons in the envelope; and an anode including a first member of which at least a portion extends to the outside of the envelope, a second member that is provided in a direction perpendicular to a central axis of the first member, comes into contact with the first member, and has a higher X-ray shielding performance than the first member, and a target that receives the electrons emitted from the cathode assembly and generates X-rays.

公开(公告)号：US10412818B2

公开(公告)日：2019-09-10

申请号：US15292487

申请日：2016-10-13

Applicant: Toshiba Medical Systems Corporation

Inventor： Yuki Totsuka ,  Akio Tetsuka ,  Masaharu Soya

IPC: H05G1/46 ,  H01J35/06 ,  H01J35/08 ,  H05G1/26

Abstract: An X-ray diagnostic apparatus according to embodiments includes an X-ray tube assembly and a grid potential control circuitry. The X-ray tube assembly includes a filament that emits electrons, a target that generates X-rays by receiving the electrons, and a grid having a potential for adjusting a potential gradient around the filament. The grid potential control circuitry switches the potential of the grid to a potential where the potential gradient around the filament becomes greater than a potential gradient generated by a potential of the filament and a potential of the target.

公开(公告)号：US20190221398A1

公开(公告)日：2019-07-18

申请号：US16362837

申请日：2019-03-25

Applicant: NANOX IMAGING PLC

Inventor： HIDENORI KENMOTSU ,  HITOSHI MASUYA ,  KOICHI IIDA

IPC: H01J35/06 ,  H01J35/14 ,  H01J35/08 ,  H01J1/304

Abstract: A robust cold cathode uses an electron emitting construct design possibly for an x-ray emitter device. The electron beam emitted by the emitting construct is focused and accelerated by an electrical field towards an electron anode target. A shield is provided to prevent a cold cathode from being damaged by ion bombardment in high-voltage applications and a non-emitter zone may provide a robust ion bombardment zone. The system is further configured to provide an angled target anode or a stepped target anode to further reduce the ion bombardment damage.

公开(公告)号：US10334712B2

公开(公告)日：2019-06-25

申请号：US15273486

申请日：2016-09-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jin-Woo Jeong ,  Yoon-Ho Song

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

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：US10297414B2

公开(公告)日：2019-05-21

申请号：US15271041

申请日：2016-09-20

Applicant: VAREX IMAGING CORPORATION

Inventor： Michael Meiler ,  Inwoo Yoon ,  Christopher Lewis

IPC: H01J35/02 ,  H01J35/06 ,  H01J35/08 ,  H01J35/14 ,  A61B6/00 ,  A61B6/03

Abstract: An X-ray tube may include a housing, a cathode, an anode, and a tube auxiliary unit or an authentication module. The cathode and the anode are positioned within the housing. The cathode and the anode are spaced apart such that a target surface of the anode is positioned to receive electrons emitted by the cathode. The tube auxiliary unit may be coupled to the housing. The tube auxiliary unit may include X-ray tube data including tube calibration data based on parameters of the X-ray tube. The authentication module may be configured to authenticate the X-ray tube with a tube control unit.

公开(公告)号：US20190145917A1

公开(公告)日：2019-05-16

申请号：US16226467

申请日：2018-12-19

Applicant: Sigray, Inc.

Inventor： Wenbing Yun ,  Srivatsan Seshadri ,  Janos Kirz ,  Sylvia Jia Yun Lewis

IPC: G01N23/207 ,  G21K1/06 ,  H01J35/08 ,  H01J35/14 ,  H01J35/18 ,  G01N23/087 ,  G01N23/223

Abstract: An x-ray spectrometer system includes an x-ray source, an x-ray optical system, a mount, and an x-ray spectrometer. The x-ray optical system is configured to receive, focus, and spectrally filter x-rays from the x-ray source to form an x-ray beam having a spectrum that is attenuated in an energy range above a predetermined energy and having a focus at a predetermined focal plane.

公开(公告)号：US20190133541A1

公开(公告)日：2019-05-09

申请号：US16097636

申请日：2017-05-24

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland PROKSA ,  Daniela MUENZEL

IPC: A61B6/00 ,  H05G1/20 ,  H05G1/08 ,  H01J35/06 ,  H01J35/08 ,  H01J35/04

Abstract: The present invention relates to an apparatus for generating X-rays. It is described to produce (210) with a power supply (30) a voltage. A cathode (22) of an X-ray source (20) is positioned (220) relative to an anode (24) of the X-ray source. Electrons are emitted (230) from the cathode. Electrons emitted from the cathode interact (240) with the anode with energies corresponding to the voltage. X-rays are generated (250) from the anode, wherein the electrons interact with the anode to generate the X-rays. The X-ray source is controlled (260), such that a plurality of first X-ray pulses is generated each having a first X-ray flux, wherein the first X-ray pulses are temporally separated from each other. The X-ray source is controlled (270), such that a least one second X-ray pulse is generated having a second X-ray flux that is substantially less than the first X-ray flux, wherein the at least one second X-ray pulse is generated temporally between consecutive pulses of the first X-ray pulses.

公开(公告)号：US20190080876A1

公开(公告)日：2019-03-14

申请号：US16123374

申请日：2018-09-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin-Woo JEONG ,  Yoon-Ho SONG

IPC: H01J35/14 ,  H01J35/08 ,  H01J35/06 ,  H05G1/52 ,  H05G1/32 ,  H05G1/26

CPC classification number: H01J35/14 ,  H01J35/065 ,  H01J35/08 ,  H01J35/147 ,  H05G1/02 ,  H05G1/265 ,  H05G1/32 ,  H05G1/52

Abstract: Provided is an X-ray imaging device and a driving method thereof, the X-ray imaging device including an electron beam generation unit including a plurality of nano-emitters and a cathode, a first focusing electrode configured to focus an electron beam emitted from the electron beam generation unit, a deflector configured to deflect the electron beam focused by the first focusing electrode, a limited electrode configured to limit traveling of the electron beam deflected by the deflector, and an anode configured to be irradiated with the electron beam to emit an X-ray, wherein the limited electrode includes a limited aperture which the electron beam pass.