公开(公告)号：US20220384135A1

公开(公告)日：2022-12-01

申请号：US17755520

申请日：2020-04-13

Applicant: NuRay Technology Co., Ltd.

Inventor： Huaping TANG ,  Jinsong PAN ,  Yangwei ZHAN ,  Zhanfeng QIN ,  Qinghui ZHANG ,  Xiangyu YIN

IPC: H01J35/02

Abstract: A time-division multiplexing control device applied to a distributed X-ray source includes: a first switch module with a number of first switches that receive a high-voltage signal and a first control signal, selectively turning on one of the plurality of first switches according to the first control signal and sending the high-voltage signal through the first switch turned on; and a cathode control module including a plurality of cathode control stages in one-to-one correspondence with the plurality of first switches, used for receiving the high-voltage signal from the first switch module and sending working state data through a cathode control stage corresponding to the first switch turned on in the plurality of cathode control stages, where each cathode control stage includes a cathode control unit and a cathode.

公开(公告)号：US11456144B2

公开(公告)日：2022-09-27

申请号：US16910069

申请日：2020-06-24

Applicant: Jinhui Xing ,  Zhili Cui ,  Jian Gao ,  Hongguang Cao

Inventor： Jinhui Xing ,  Zhili Cui ,  Jian Gao ,  Hongguang Cao

IPC: H01J35/04 ,  H05G1/70 ,  A61B6/00 ,  H01J35/02

Abstract: Provided is an arc-shaped multi-focal point fixed anode gate controlled ray source, comprising an arc-shaped ray source housing, a ray tube bracket, a plurality of fixed anode reflected ray tubes and a plurality of gate controlled switches, wherein the plurality of fixed anode reflected ray tubes are fixed on the arc-shaped ray source housing by means of the ray tube bracket, and the focal points of the plurality of fixed anode reflected ray tubes are distributed on the same distribution circle; and the plurality of gate controlled switches are correspondingly connected to the plurality of fixed anode reflected ray tubes. By splicing the plurality of arc-shaped multi-focal point fixed anode gate controlled ray sources into an integral ring stricture, the focal points of all the fixed anode reflected ray tubes therein can be distributed on, the same distribution circle.

公开(公告)号：US20220270843A1

公开(公告)日：2022-08-25

申请号：US17181303

申请日：2021-02-22

Applicant: GE Precision Healthcare LLC

Inventor： Ian Strider Hunt ,  Andrew Thomas Cross

IPC: H01J35/02 ,  F16C17/10 ,  F16C33/10

Abstract: A bearing structure for an X-ray tube is provided that includes a journal bearing shaft with a radially protruding thrust bearing encased within a bearing sleeve, one of which rotates relative to the other. The stationary component, e.g., the journal bearing and/or the thrust bearing includes at least one vent groove formed therein that improves the ability of the journal bearing structure to enable gases trapped by the liquid metal within the bearing assembly to escape through the vent groove to the exterior of the X-ray tube. By adding a strategically located channel or vent groove of sufficient size in at least one of the journal bearing or the thrust bearing, the pressures resisted by the seal created between the liquid metal and the vent groove(s) in the bearing components is significantly reduced, allowing escape of the gases to avoid detrimental effects to the operation of the X-ray tube, while maintaining the load carrying capacity of the bearing assembly.

公开(公告)号：US11165427B2

公开(公告)日：2021-11-02

申请号：US16147459

申请日：2018-09-28

Applicant: Varex Imaging Corporation

Inventor： John C Turner

IPC: H05H9/00 ,  H03K19/173 ,  H03K5/01 ,  H03K3/027 ,  H03K5/00 ,  H05H9/04 ,  H05H7/22 ,  H05H13/04 ,  H05H7/02 ,  H01J35/02 ,  H03K3/78 ,  H01J29/52 ,  H05G2/00

Abstract: Some embodiments include a system comprising: an RF source configured to generate an RF signal; an RF frequency control circuit coupled to the RF source and configured to adjust a frequency of the RF signal; an accelerator structure configured to accelerate a particle beam in response to the RF signal; and control logic configured to: receive a plurality of settings over time for the RF source; adjust the RF signal in response to the settings; and adjust a setpoint of the RF frequency control circuit in response to the settings.

公开(公告)号：US11151726B2

公开(公告)日：2021-10-19

申请号：US16244148

申请日：2019-01-10

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Ryoichi Nagae ,  Sho Sasaki ,  Mika Takaya

IPC: G06T7/246 ,  G06T7/33 ,  G06K9/62 ,  A61B6/00 ,  G06T5/50 ,  G06T5/00 ,  H01J35/02

Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry configured: to acquire a plurality of time series medical images; to determine a feature point in each of the plurality of medical images to calculate moving amounts of the determined feature point between the plurality of medical images; to set a weight coefficient with respect to each of the plurality of medical images, on the basis of the calculated moving amounts; and to perform an image processing process by using the plurality of medical images, on the basis of the weight coefficients.

公开(公告)号：US11147151B2

公开(公告)日：2021-10-12

申请号：US16405926

申请日：2019-05-07

Applicant: Shimadzu Corporation

Inventor： Yasuhiro Demura

IPC: H05G1/66 ,  H01J35/10 ,  H01J35/24 ,  H01J35/26 ,  H02M7/515 ,  H05G1/22 ,  H05G1/08 ,  H05G1/26 ,  H05G1/12 ,  H05G1/18 ,  H05G1/24 ,  H05G1/30 ,  H01J35/02 ,  H01J35/06 ,  H05G1/20 ,  H05G1/10 ,  H05G1/32

Abstract: A rotary anode driving device includes a DC power supply, an inverter circuit which is connected to the DC power supply and includes a plurality of switching elements and, the inverter circuit generates an AC voltage from a DC voltage of the DC power supply, and outputs the AC voltage to a stator coil which generates a rotating magnetic field of an X-ray tube; a pulse width modulation (PWM) waveform generator configured to generate an AC voltage of two phases or three phases as the AC voltage from the DC voltage by performing PWM control of the switching elements of the inverter circuit; and a capacitor connected in series to an input side of a stator coil of at least one phase of the stator coil, the capacitor having an electrostatic capacitance constituting a series resonant circuit with the stator coil to which the capacitor is connected.

公开(公告)号：US20210267041A1

公开(公告)日：2021-08-26

申请号：US17053616

申请日：2019-05-10

Applicant: GENERAL MEDICAL MERATE S.P.A.

Inventor： Fabio SORDI ,  Fabio VERONELLI

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

Abstract: The X-ray emitting unit (100) comprises a box-shaped container (110) with a chamber inside it, and an X-ray tube located in the chamber; the box-shaped container (110) is provided with an opening (111) for X-rays and a plurality of openings for cooling and electrically insulating liquid; having: a first main opening (112A) for the inlet of cooling and electrically insulating liquid, a second main opening for the outlet of cooling and electrically insulating liquid; furthermore, the box-shaped container (110) has: at least one secondary opening (114A) of the first type for cooling and electrically insulating liquid and/or at least one secondary opening (116A, 116B) of the second type for cooling and electrically insulating liquid.

公开(公告)号：US11041379B2

公开(公告)日：2021-06-22

申请号：US16716779

申请日：2019-12-17

Applicant: Philip Teague ,  Melissa Spannuth

Inventor： Philip Teague ,  Melissa Spannuth

IPC: E21B47/00 ,  H01J35/02 ,  H01J35/32 ,  G01V5/12 ,  G01N23/203 ,  E21B47/002

Abstract: An x-ray-based cased wellbore environment imaging tool is provided, the tool including at least an x-ray source; a radiation shield to define the output form of the produced x-rays; a direction controllable two-dimensional per-pixel collimated imaging detector array; sonde-dependent electronics; and a plurality of tool logic electronics and PSUs. A method of using an x-ray-based cased wellbore environment imaging tool to monitor and determine the integrity of materials within wellbore environments is also provided, the method including at least: producing x-rays in a shaped output; measuring the intensity of backscatter x-rays returning from materials surrounding the wellbore; controlling two-dimensional per-pixel collimated imaging detector arrays; and converting image data from said detectors into consolidated images of the wellbore materials.

公开(公告)号：US10991539B2

公开(公告)日：2021-04-27

申请号：US15472656

申请日：2017-03-29

Applicant: Nanox Imaging PLC

Inventor： Hidenori Kenmotsu ,  Hitoshi Masuya ,  Koichi Iida

IPC: H01J35/02 ,  H01J35/04 ,  H01J35/06 ,  H01J35/08 ,  H01J35/14 ,  H05G1/56 ,  H01J9/39 ,  H01J35/20 ,  G21K1/02

Abstract: The X-ray tube disclosed herein includes an electron emission unit including an electron emission element using a cold cathode; an anode unit disposed opposite to the electron emission unit, with which electrons emitted from the electron emission unit collide; and a focus structure disposed between the electron emission unit and a target unit disposed on a surface of the anode unit that is opposed to the electron emission unit. The electron emission unit is divided into a first region and a second region which can independently be turned ON/OFF. The X-ray tube is focus-designed such that collision regions, at the anode unit, of electron beams emitted from the respective first region and second region substantially coincide with each other.

公开(公告)号：US10728996B2

公开(公告)日：2020-07-28

申请号：US16052681

申请日：2018-08-02

Applicant: Radalytica s.r.o.

Inventor： Richard Kaderabek ,  Josef Uher

IPC: H05G2/00 ,  G01N23/044 ,  H01J35/02 ,  H01J35/06

Abstract: The circular X-ray tube for the irradiation of the object (1) by X-radiation comprising the circular body (2) and at least two friction elements that rub together whereby forming a triboluminescent source of X-radiation. The one friction element comprises at least one circumferential element (3) arranged on the external circumferential side of the circular body (2) of the X-ray tube and the other friction element comprises at least one pressure element (4) that is pressed against the circumferential element (3), where the pressure element (4) is adapted for dragging upon the circumferential element (3), and/or at least one circumferential element (3) is adapted for pulling through under the pressure element (4). The X-ray instrument utilizes the circular X-ray tube and the imaging detectors (7) of ionizing radiation.