公开(公告)号：CN109009204A

公开(公告)日：2018-12-18

申请号：CN201711011971.6

申请日：2017-10-26

Applicant: 上海联影医疗科技有限公司

Inventor： 杜岩峰 ,  刘颖彪

IPC: A61B6/08 ,  A61B6/06 ,  A61B6/03

CPC classification number: H01J35/14 ,  H01J35/153 ,  H01J37/243 ,  H05G1/02 ,  A61B6/08 ,  A61B6/032 ,  A61B6/06 ,  A61B6/587

Abstract: 本公开涉及用于调节X射线管的焦点位置的方法和系统。该方法可包括：获得X射线管的第一热容量和焦点的第一位置；获得该X射线管的第二热容量；基于第二热容量来确定该X射线管的焦点的第二位置；基于焦点的第一位置和第二位置来确定该X射线管的聚焦罩的目标电网电压差；以及基于该目标电网电压差来调节该X射线管。

公开(公告)号：EP4394838A1

公开(公告)日：2024-07-03

申请号：EP22935479.0

申请日：2022-03-31

Applicant: Canon Anelva Corporation

Inventor： ANDO, Yoichi

IPC: H01J35/08 ,  H01J35/30

CPC classification number: H01J35/116 ,  H01J2235/08520130101 ,  H01J35/186 ,  H01J35/153 ,  H05G1/52 ,  H05G1/34

Abstract: An X-ray generating apparatus includes an electron gun, a target configured to generate X-rays by being irradiated with an electron beam emitted from the electron gun, and a controller configured to control a first mode for thinning the target by irradiating the target with an electron beam with a current adjusted within a first current range and a second mode for generating X-rays by irradiating the target with an electron beam with a current adjusted within a second current range. The first current range has a lower limit larger than an upper limit of the second current range.

公开(公告)号：EP4358112A2

公开(公告)日：2024-04-24

申请号：EP23198277.8

申请日：2023-09-19

Applicant: Carl Zeiss X-Ray Microscopy, Inc.

Inventor： FLACHENECKER, Claus

IPC: H01J35/14 ,  H01J35/30

CPC classification number: H01J35/153 ,  H01J35/30

Abstract: A method for controlling an x-ray source comprises generating an electron beam for striking the target to generate x-rays and steering the electron beam to a desired location on the target using a first and a second steering system distributed along a flight tube. In this way, the beam can be steering to the desired location while also passing through the center of a focusing lens to maintain optimal beam characteristics. Also possible is scanning the electron beam over the target to find a fiducial mark. Then, a desired location can be found as an offset from this mark.

公开(公告)号：US20240298400A1

公开(公告)日：2024-09-05

申请号：US18593530

申请日：2024-03-01

Applicant: Malvern Panalytical B.V.

Inventor： Detlef Beckers ,  Alexander Kharchenko ,  Dmitriy Malyutin

IPC: H05G1/52 ,  G01N23/20016 ,  H01J35/14 ,  H01J35/30

CPC classification number: H05G1/52 ,  G01N23/20016 ,  H01J35/153 ,  H01J35/30 ,  G01N2223/303

Abstract: The present invention relates to an X-ray analysis apparatus and an X-ray method for analysing a sample. The X-ray analysis apparatus includes an X-ray source comprising an anode and a cathode, and configured to irradiate an irradiated area on a target surface of the anode. The X-ray analysis apparatus further includes a steering arrangement, a processor and a controller. The steering arrangement is configured to position the irradiated area on the target surface of the anode. The processor is configured to receive X-ray analysis information, and to determine a change in position of the irradiated area on the target surface based on the X-ray analysis information. The controller is configured to control the steering arrangement to move the irradiated area on the target surface according to the change in position determined by the processor.

公开(公告)号：US12046442B2

公开(公告)日：2024-07-23

申请号：US17177038

申请日：2021-02-16

Applicant: VEC Imaging GmbH & Co. KG

Inventor： Houman Jafari ,  Bo Gao ,  Vance Scott Robinson

IPC: H01J35/14 ,  H01J35/06 ,  H01J35/08 ,  H01J35/12 ,  H05G1/02

CPC classification number: H01J35/153 ,  H01J35/112 ,  H01J35/12 ,  H01J35/064 ,  H01J2235/068 ,  H01J2235/086 ,  H05G1/02

Abstract: Some embodiments include a system, comprising: a plurality of x-ray sources, each x-ray source including: an electron source configured to generate an electron beam; and a target configured to receive the electron beam and convert the electron beam into an x-ray beam; wherein: at first x-ray source of the x-ray sources is different from a second x-ray source of the x-ray sources; and the targets of the x-ray sources are part of a linear target.

公开(公告)号：US20240087833A1

公开(公告)日：2024-03-14

申请号：US18509608

申请日：2023-11-15

Applicant: CANON ANELVA CORPORATION

Inventor： Yoichi ANDO

IPC: G01N23/046 ,  H01J35/14

CPC classification number: G01N23/046 ,  H01J35/153 ,  H01J35/112

Abstract: An X-ray imaging apparatus includes an X-ray generation apparatus including an X-ray generation tube having an electron gun and a target configured to receive an electron beam from the electron gun to generate X-rays, a support structure supporting the tube, and a deflector configured to deflect the electron beam, an X-ray detector configured to detect the X-rays from the X-ray generation apparatus, and a control apparatus configured to control the X-ray generation apparatus. The support structure supports the tube to permit at least the target to be pivoted in a state in which the deflector is fixed, and the control apparatus determines, based on use amount of the X-ray generation apparatus and/or change of the X-rays generated by the X-ray generation apparatus, whether it is necessary to pivot the target.

公开(公告)号：US11864300B2

公开(公告)日：2024-01-02

申请号：US17238785

申请日：2021-04-23

Applicant: Carl Zeiss X-ray Microscopy, Inc.

Inventor： Claus Flachenecker ,  Thomas A. Case

IPC: H05G1/02 ,  H01J35/14 ,  H05G1/06 ,  H01J35/16

CPC classification number: H05G1/025 ,  H01J35/153 ,  H01J35/16 ,  H05G1/06

Abstract: The electron beam is typically dynamically steered after its generation on the path to the target. The steering is performed by one or more source coils. These coils produce the magnetic field outside the vacuum vessel allowing air/water/oil cooling to remove undesired heat. The magnetic field is then picked up inside the vacuum vessel with pole pieces and guided towards the region where the magnetic field is needed to steer the electron beam.

公开(公告)号：US20230375484A1

公开(公告)日：2023-11-23

申请号：US18030948

申请日：2021-10-08

Applicant: The University of North Carolina at Chapel Hill

Inventor： Christina Inscoe ,  Yueh Zenas Lee ,  Boyuan LI

IPC: G01N23/046 ,  H01J35/06 ,  H01J35/14 ,  G06T11/00 ,  H01J35/04

CPC classification number: G01N23/046 ,  H01J35/065 ,  H01J35/147 ,  H01J35/153 ,  G06T11/005 ,  H01J35/045 ,  G01N2223/419 ,  G01N2223/6126 ,  G01N2223/6123 ,  G01N2223/424 ,  G01N2223/3301 ,  G01N2223/401 ,  G01N2223/313 ,  G01N2223/055 ,  G01N2223/421 ,  G01N2223/206 ,  H01J2201/30469 ,  G06T2211/408

Abstract: A multisource volumetric spectral computed tomography imaging device includes an x-ray source array with multiple spatially distributed x-ray focal spots, an x-ray beam collimator with an array of apertures, each confining the radiation from a corresponding x-ray focal spot to illuminate a corresponding segment of an object, a digital area x-ray detector, and a gantry to rotate the x-ray source array and the detector around the object. An electronic control unit activates the radiations from the x-ray focal spots to scan the object multiple times as the gantry rotates around the object. The images are used to reconstruct a volumetric CT image of the object with reduced scattered radiation. For dual energy and multi energy imaging, radiation from each focal spot is filtered by a corresponding spectral filter to optimize its energy spectrum.

公开(公告)号：US12080509B2

公开(公告)日：2024-09-03

申请号：US18616914

申请日：2024-03-26

Applicant: CANON ANELVA CORPORATION

Inventor： Yoichi Ando

IPC: H01J35/30 ,  H01J35/14 ,  H05G1/32

CPC classification number: H01J35/30 ,  H01J35/153 ,  H05G1/32

Abstract: An X-ray generating apparatus includes an X-ray generating tube including an electron gun and a target configured to generate X-rays upon receiving an electron beam emitted from the electron gun, a deflector configured to deflect the electron beam, a driving circuit configured to apply an accelerating voltage between a cathode of the electron gun and the target, and an adjuster configured to adjust deflection of the electron beam by the deflector in accordance with the accelerating voltage or an amount of change in the accelerating voltage so as to reduce a change in incident position of the electron beam onto the target due to a change in the accelerating voltage.

公开(公告)号：US12005274B2

公开(公告)日：2024-06-11

申请号：US17697430

申请日：2022-03-17

Applicant: Varian Medical Systems, Inc.

Inventor： James Clayton

IPC: A61N5/10 ,  G21K1/093 ,  G21K1/10 ,  H01J35/08 ,  H01J35/10 ,  H01J35/14 ,  H01J35/22 ,  H01J35/30 ,  H05G2/00 ,  H05H9/00 ,  H05H9/04

CPC classification number: A61N5/1077 ,  A61N5/1043 ,  A61N5/1045 ,  A61N5/1047 ,  A61N5/1081 ,  G21K1/093 ,  G21K1/10 ,  H01J35/10 ,  H01J35/116 ,  H01J35/153 ,  H01J35/22 ,  H01J35/30 ,  H05G2/00 ,  H05H9/048 ,  A61N2005/1089

Abstract: A radiotherapy system includes an X-ray target configured to convert an incident electron beam into a therapeutic X-ray beam, a purging magnet configured to redirect unwanted particles emitted from the X-ray target away from the therapeutic X-ray beam, and a particle collector configured to absorb the unwanted particles subsequent to redirection by the purging magnet. The particle collector may be configured to dissipate at least 50% of the energy of the incident electron beam.