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公开(公告)号：US09603230B2
公开(公告)日：2017-03-21
申请号：US14095724
申请日：2013-12-03
Applicant: General Electric Company
Inventor： Uwe Wiedmann , George William Baptiste
CPC classification number: H05G1/265 , G01R1/203 , G01R19/0092
Abstract: Systems and methods for measuring current with shielded conductors are provided. One system includes a first wire within shielding, wherein the first wire is connected between a high voltage source and a filament of an x-ray system. The system also includes a second wire within shielding, wherein the second wire is connected between the high voltage source and the x-ray system and the shielding of the first and second wires is at a high voltage potential of the x-ray system. The system further includes a measurement resistor at a high voltage potential, wherein the measurement resistor is connected between the shielding and one of the first or second wires.
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公开(公告)号：US09417194B2
公开(公告)日：2016-08-16
申请号：US13969279
申请日：2013-08-16
Applicant: General Electric Company
Inventor： Uwe Wiedmann
CPC classification number: G01N23/046 , A61B6/032 , A61B6/4021 , A61B6/4441 , A61B6/58 , A61B6/582 , G01N2223/303 , G01N2223/316 , G01N2223/32
Abstract: Use of a reference detector to characterize an X-ray emission focal spot is disclosed. In certain embodiments, the reference detector may contain one or more openings or apertures that may be used to acquire localized X-ray intensity information used to derive the focal spot characteristics. In certain embodiments, the reference detector is on the source-side of the imaged volume.
Abstract translation: 公开了使用参考检测器来表征X射线发射焦点。 在某些实施例中，参考检测器可以包含一个或多个可用于获取用于导出焦点特性的局部X射线强度信息的开口或孔。 在某些实施例中，参考检测器位于成像体积的源侧。
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公开(公告)号：US09253864B2
公开(公告)日：2016-02-02
申请号：US14202520
申请日：2014-03-10
Applicant: General Electric Company
Inventor： Antonio Caiafa , Uwe Wiedmann , Philippe Ernest , Georges William Baptiste , Dominique Poincloux , Yan Jiang
Abstract: Apparatus and methods to control an electron beam of an x-ray tube are provided. One apparatus includes at least one of (i) a first switching unit having a voltage source and a pair of switches connected in series and configured to switch between open and closed positions to change an output voltage to engage or bypass the voltage source or (ii) a second switching unit connected to a voltage source and having a first pair of switches connected in series and a second pair of switches connected in series, wherein the first and second pair of switches are connected in parallel, and wherein the first and second pairs of switches are configured to switch between open and closed position to change an output voltage generated from the voltage source. The first and second switching units are connected in series and a third switching unit provided that is amplitude controllable.
Abstract translation: 提供了用于控制X射线管的电子束的装置和方法。 一个装置包括以下至少一个：（i）第一开关单元，其具有电压源和串联连接的一对开关，并且被配置为在打开和关闭位置之间切换以改变输出电压以接合或旁路电压源，或者（ii ）连接到电压源并具有串联连接的第一对开关和串联连接的第二对开关的第二开关单元，其中所述第一和第二对开关并联连接，并且其中所述第一和第二对 的开关被配置为在打开和关闭位置之间切换以改变从电压源产生的输出电压。 第一开关单元和第二开关单元串联连接，第三开关单元设置为可调幅度。
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24.发明申请PHOTON-COUNTING CT-SYSTEM WITH REDUCED DETECTOR COUNTING-RATE REQUIREMENTS 有权具有减少检测器计数速率要求的光电计数CT系统公开(公告)号：US20140177786A1
公开(公告)日：2014-06-26
申请号：US13724376
申请日：2012-12-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Uwe Wiedmann , Daniel David Harrison
IPC: G01N23/04
CPC classification number: G01N23/046 , G01N23/06 , G01N23/083 , G01N2223/419 , G01N2223/423 , G01N2223/612
Abstract: Various of the disclosed embodiments contemplate systems and methods that compensate for the limited dynamic range of certain X-Ray detector systems, such as CAT-Scan detector systems. In some embodiments, the system alternates between different photon emission flux values and then gives more consideration to an attenuation value associated with a more favorable detection flux. In this manner, different object densities may be accounted for and may be more properly imaged despite the particular characteristics of the X-Ray system.
Abstract translation: 各种公开的实施例考虑了补偿某些X射线检测器系统（例如CAT扫描检测器系统）的有限动态范围的系统和方法。 在一些实施例中，系统在不同的光子发射通量值之间交替，然后更多地考虑与更有利的检测通量相关联的衰减值。 以这种方式，可以考虑不同的物体密度，并且可以更适当地成像，尽管X射线系统具有特定的特征。
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25.发明公开公开(公告)号：US20240122777A1
公开(公告)日：2024-04-18
申请号：US17967722
申请日：2022-10-17
Applicant: General Electric Company
Inventor： Paul Francis FitzGerald , Uwe Wiedmann , Ross Christopher Stalter , Stephen Lorenco Araujo , Michael James Rishel , Chad Allan Smith
CPC classification number: A61G10/005 , A61B6/4423 , A61G10/02 , G01R33/28 , A61B6/032
Abstract: Systems are provided for an imaging system isolation enclosure for use with a medical imaging system includes a pathogen impermeable enclosure for use with one or more of radiation imaging systems and magnetic resonance imaging systems, the pathogen impermeable enclosure is configured to provide a barrier between the imaging system and at least one of a patient user and an imaging room, and an air filtration system including an inlet to supply a cooling air flow to an interior of the imaging system isolation enclosure and an outlet to output exhaust air from an interior of the imaging system isolation enclosure.
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Patent Agency Ranking
26.发明公开公开(公告)号：US20240062983A1
公开(公告)日：2024-02-22
申请号：US18497508
申请日：2023-10-30
Applicant: General Electric Company
Inventor： John Scott Price , Ye Bai , Antonio Caiafa , Vasile Bogdan Neculaes , Uwe Wiedmann
IPC: H01J29/68 , B29C64/153 , B29C64/273 , H01J37/30 , H01J37/305
CPC classification number: H01J29/68 , B29C64/153 , B29C64/273 , H01J37/3002 , H01J37/305 , B33Y30/00
Abstract: A system for melting, sintering, or heat treating a material is provided. The system includes a cathode, an anode, and a focus coil assembly having a quadrupole magnet. The quadrupole magnet includes four poles and a yoke. The four poles are spaced apart and surround a beam cavity. Each of the four poles includes a pole face proximate the beam cavity and an end opposite the pole face. The first and third poles are aligned along an x-axis and configured to have a first magnetic polarity at their respective pole faces and a second magnetic polarity opposite the first magnetic polarity at their respective ends. The second and fourth poles are aligned along a y-axis and configured to have the second magnetic polarity at their respective pole faces and the first magnetic polarity at their respective ends. The yoke surrounds the poles and is coupled to the poles.
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公开(公告)号：US10893839B2
公开(公告)日：2021-01-19
申请号：US16001289
申请日：2018-06-06
Applicant: General Electric Company
Inventor： Jiahua Fan , Yannan Jin , Ming Yan , Uwe Wiedmann
Abstract: A computed tomography (CT) imaging system and method, wherein the system includes an x-ray source that is operable to emit a beam of x-rays from a focal spot and move a spot position of the focal spot. The system also includes a detector assembly that is configured to detect the x-rays attenuated by the object. At least one processing unit is configured to execute programmed instructions stored in memory. The at least one processing unit is configured to direct the x-ray source to emit different beams of the x-rays at different energy levels and to receive data from the detector assembly that are representative of detection of the x-rays emitted at the different energy levels. The at least one processing unit is also configured to direct the x-ray source to move the focal spot such that the focal spot is at different spot positions while the different beams are emitted.
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公开(公告)号：US10165663B2
公开(公告)日：2018-12-25
申请号：US15090852
申请日：2016-04-05
Applicant: General Electric Company
Inventor： Uwe Wiedmann , Philippe Ernest , Denis Perrillat-Amede , Dominique Poincloux , Jean-Francois Larroux
Abstract: An x-ray system for simultaneously or concurrently measuring currents of multiple emitters is provided. The x-ray system includes a high voltage direct current (DC) supply configured to supply tube current to the multiple emitters and plural emitter circuits. Each of these circuits includes each comprising an alternating current (AC) voltage supply, at least one of the multiple emitters operatively coupled to the AC voltage supply and the high voltage DC supply, and a circuit coupling the AC voltage supply and the high voltage DC voltage supply to the at least one of the multiple filaments. At least one of the emitter circuits has a current measurement device between the high voltage DC supply and the emitter.
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公开(公告)号：US09953797B2
公开(公告)日：2018-04-24
申请号：US14867396
申请日：2015-09-28
Applicant: General Electric Company
Inventor： Xi Zhang , Mark Alan Frontera , Sergio Lemaitre , John Scott Price , Uwe Wiedmann
Abstract: A flat emitter configured for use in an X-ray tube is presented. The X-ray tube includes a first conductive section including a first terminal. Further, the X-ray tube includes a second conductive section including a second terminal. Also, the X-ray tube includes a third conductive section disposed between the first conductive section and the second conductive section, wherein the third conductive section is configured to emit electrons toward a determined focal spot, and wherein the third conductive section includes a plurality of slits subdividing the third conductive section into a winding track coupled to the first conductive section and the second conductive section, wherein at least two of the plurality of slits are interwound spirally to compose the winding track, and wherein the winding track is configured to expand and contract based on heat provided to the third conductive section.
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公开(公告)号：US09658347B2
公开(公告)日：2017-05-23
申请号：US14739981
申请日：2015-06-15
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Biju Jacob , Jianjun Guo , Brian David Yanoff , Uwe Wiedmann
IPC: G01T1/24 , H04N5/32 , H04N5/355 , H04N5/3745
CPC classification number: G01T1/247 , H04N5/32 , H04N5/3205 , H04N5/35572 , H04N5/37452
Abstract: A digital X-ray detector is provided. The digital X-ray detector includes multiple pixels, each pixel including a pinned photodiode, and multiple readout channels coupled to each pinned photodiode, wherein each readout channel includes at least one charge-storage capacitor, an amplifier, and a transfer gate. The digital X-ray detector also includes control circuitry coupled to each pixel of the multiple pixels and configured to selectively control a flow of photocharge generated by each pinned photodiode to a respective at least one charge-storage capacitor of each respective readout channel via control of each respective transfer gate of each respective readout channel.
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