公开(公告)号：US12036424B2

公开(公告)日：2024-07-16

申请号：US17051369

申请日：2019-04-08

Applicant: OUR UNITED CORPORATION ,  SHENZHEN OUR NEW MEDICAL TECHNOLOGIES DEVELOPMENT CO., LTD.

Inventor： Huiliang Wang ,  Ming Zhong ,  Hongbin Zhao

IPC: A61N5/00 ,  A61N5/10 ,  H01J35/06 ,  H01J35/08 ,  H01J35/14

CPC classification number: A61N5/1042 ,  A61N5/1081 ,  H01J35/064 ,  H01J35/08 ,  H01J35/14 ,  A61N2005/1091 ,  A61N2005/1095

Abstract: A radiotherapy head can include an electron accelerator, a deflection control assembly, a collimator, and a target material. The deflection control assembly is provided between the electron accelerator and the collimator, the collimator is provided with a plurality of collimating holes, and the target material is provided at an entrance of the each of the plurality of collimating holes; the deflection control assembly is configured to adjust a deflection angle of electron beams emitted by the electron accelerator, and emit angle-deflected electron beams to the target material; the target material is configured to convert the electron beams emitted to the target material into X-rays; and the collimator is configured to project the X-rays to a target via the plurality of collimating holes.

公开(公告)号：US11990308B2

公开(公告)日：2024-05-21

申请号：US18008016

申请日：2021-05-26

Applicant: MEIDENSHA CORPORATION

Inventor： Takumi Hayashi ,  Rena Takahashi ,  Hayato Ochi

IPC: H01J35/06 ,  H01J1/304 ,  H01J19/24

CPC classification number: H01J35/065 ,  H01J1/304 ,  H01J19/24 ,  H01J35/064 ,  H01J2235/062 ,  H01J2235/064

Abstract: Opening edge surface (45a) of an emitter supporting unit female screw bore (45) provided at an emitter supporting unit (4) extends along radial direction of the emitter supporting unit female screw bore (45). An emitter supporting unit operation hole (32) provided at a flange portion (30a) of a vacuum enclosure (11) has shape into which one selected from a position adjustment shaft (6) and a pressing shaft (9) can be inserted from their shaft tip sides. The position adjustment shaft is provided, on an outer circumferential surface of its tip (61), with a tip side male screw portion (61a) that can be screwed into the emitter supporting unit female screw bore (45). The pressing shaft has, at its tip (91), a tip surface (91a) having a larger diameter than an opening diameter of the emitter supporting unit female screw bore (45) and extending along radial direction of the pressing shaft.

公开(公告)号：US20240112877A1

公开(公告)日：2024-04-04

申请号：US18460939

申请日：2023-09-05

Applicant: Moxtek, Inc.

Inventor： Kasey Otho GREENLAND ,  Michael S. ALMOND ,  Todd S. PARKER

IPC: H01J35/18 ,  H01J35/06 ,  H01J35/08

CPC classification number: H01J35/186 ,  H01J35/064 ,  H01J35/08

Abstract: X-rays can be used for material identification. X-ray beam purity, target adhesion the x-ray window, and a robust hermetic seal of the x-ray window are useful. To achieve these objectives, a target 17 can be mounted by an adhesion-layer 16 on the x-ray window. The adhesion-layer 16 can include chromium. A sealing-layer 13 can seal the x-ray window to a flange 19. Material of the sealing-layer 13 can be different from material of the adhesion-layer 16. There can be a gap 21 between the flange 19 and the target 17. There can be a conductive-layer 18 on the x-ray window 14 in the gap 21. A thickness Ts of the adhesion-layer 16 between the sealing-layer 13 and the x-ray window 14 can be different than a thickness Tt of the adhesion-layer 16 between the target 17 and the x-ray window 14.

公开(公告)号：US11899159B2

公开(公告)日：2024-02-13

申请号：US16838490

申请日：2020-04-02

Applicant: Schlumberger Technology Corporation

Inventor： Jani Reijonen ,  Kevin McFarland

IPC: G01V5/08 ,  G01V5/12 ,  H01J29/48 ,  H05H5/06 ,  H01J35/06 ,  H01J35/04 ,  H01J35/14 ,  H05G1/08 ,  H01J35/32 ,  H01J35/18 ,  H01J35/16 ,  H01J35/08

CPC classification number: G01V5/08 ,  G01V5/125 ,  H01J29/481 ,  H01J35/045 ,  H01J35/064 ,  H01J35/14 ,  H01J35/16 ,  H01J35/186 ,  H01J35/32 ,  H05G1/085 ,  H05H5/06 ,  H01J35/116

Abstract: A beam injector may include a cathode emitter to emit electrons and an electrode to bias at least a portion of the electrons to remain on the cathode emitter and focus the emitted electrons into an electron beam. The beam injector may also include a resistor coupled between the cathode emitter and the electrode and configured to allow self-regulation of a voltage potential on the electrode based at least in part on a current of the electron beam.

公开(公告)号：US11771382B2

公开(公告)日：2023-10-03

申请号：US17761574

申请日：2020-09-19

Applicant: ESSPEN GMBH

Inventor： Zahra Mohammadi

IPC: A61B6/03 ,  A61B6/00 ,  H01J35/30 ,  H01J35/14 ,  H01J35/06

CPC classification number: A61B6/035 ,  A61B6/032 ,  A61B6/4014 ,  A61B6/4021 ,  A61B6/4275 ,  H01J35/30 ,  A61B6/4488 ,  A61B6/542 ,  H01J35/064 ,  H01J35/153

Abstract: A computer tomograph operates by rigidly arranged x-ray tubes, which are components of emitter-detector elements, which form an emitter-detector ring opened by relocating one emitter-detector element. Each x-ray tube includes a cathode emitting electrons, and an anode arrangement having an anode. Each cathode has an orientation angle relative to the geometrical center axis of the computer tomograph. A tangential plane on the focal spot of the anode has a surface normal, which includes an anode angle with the center axis. X-ray radiation emitted from the focal spot is directed in a center radiation angle to an x-ray detector axially offset relative to the x-ray tubes. The quotient from the sum of the orientation angle, radiation angle and anode angle is between two ninths and two. Each cathode, interacting with an electrode arrangement of the x-ray tubes, produces a focal spot on one of selectable positions on the anode arrangement.

公开(公告)号：US20230197395A1

公开(公告)日：2023-06-22

申请号：US18008016

申请日：2021-05-26

Applicant: MEIDENSHA CORPORATION

Inventor： Takumi HAYASHI ,  Rena TAKAHASHI ,  Hayato OCHI

IPC: H01J35/06

CPC classification number: H01J35/064 ,  H01J35/065 ,  H01J2235/064

Abstract: opening edge surface (45a) of an emitter supporting unit female screw bore (45) provided at an emitter supporting unit (4) extends along radial direction of the emitter supporting unit female screw bore (45). An emitter supporting unit operation hole (32) provided at a flange portion (30a) of a vacuum enclosure (11) has shape into which one selected from a position adjustment shaft (6) and a pressing shaft (9) can be inserted from their shaft tip sides. The position adjustment shaft is provided, on an outer circumferential surface of its tip (61), with a tip side male screw portion (61a) that can be screwed into the emitter supporting unit female screw bore (45). The pressing shaft has, at its tip (91), a tip surface (91a) having a larger diameter than an opening diameter of the emitter supporting unit female screw bore (45) and extending along radial direction of the pressing shaft.

公开(公告)号：US20230148363A1

公开(公告)日：2023-05-11

申请号：US17917977

申请日：2021-01-28

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Dai HARAGUCHI ,  Yoshito HASEGAWA

IPC: H01J35/06

CPC classification number: H01J35/064 ,  H01J2235/064

Abstract: Disclosed is an electron beam generation source including: an electron discharge part extending on a desired axis and configured to discharge electrons; a movable part connected to one end of the electron discharge part; a support part configured to support the movable part to be movable along the axis; and a tension holding part configured to hold tension of the electron discharge part by applying a pressing force or a tensile force to the movable part. The movable part and the tension holding part are disposed on the axis.

公开(公告)号：US20230145938A1

公开(公告)日：2023-05-11

申请号：US17917627

申请日：2021-04-07

Applicant: Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts

Inventor： Malte VASSHOLZ ,  Tim SALDITT

IPC: H01J35/06 ,  H01J35/08 ,  G21K1/06

CPC classification number: H01J35/064 ,  H01J35/116 ,  G21K1/062 ,  H01J2235/086

Abstract: The invention relates to an X-ray source (10) comprising at least one waveguide (30) for X-ray radiation, wherein the at least one waveguide (30) has a core (32) and a casing (40) surrounding the core (32), and wherein at least one part of the waveguide (30) is designed to emit X-ray radiation (50), if the part of the waveguide (30) is bombarded with electrons (52). The invention also relates to a system for generating X-ray radiation comprising an X-ray source of this type, and a method for generating X-ray radiation by means of an X-ray source of this type or a system of this type.