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公开(公告)号：US20180247786A1
公开(公告)日：2018-08-30
申请号：US15442132
申请日：2017-02-24
Applicant: General Electric Company
Inventor： Yong Liang , Vance Scott Robinson , Uwe Wiedmann
IPC: H01J35/10
CPC classification number: H01J35/105 , H01J35/12 , H01J2235/088 , H01J2235/1291
Abstract: In one embodiment, an X-ray source includes a source target configured to generate X-rays when impacted by an electron beam. The source target includes one or more thermally conductive layers; and one or more X-ray generating layers interleaved with the thermally conductive layers, wherein at least one X-ray generating layer comprises regions of X-ray generating material separated by thermally conductive material within the respective X-ray generating layer.
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公开(公告)号：US09952164B2
公开(公告)日：2018-04-24
申请号：US13724376
申请日：2012-12-21
Applicant: General Electric Company
Inventor： Uwe Wiedmann , Daniel David Harrison
IPC: G01N23/06 , G01N23/083 , 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.
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公开(公告)号：US20180068823A1
公开(公告)日：2018-03-08
申请号：US15258631
申请日：2016-09-07
Applicant: General Electric Company
Inventor： Michael John Utschig , Uwe Wiedmann , Bruno Kristiaan Bernard De Man , Sergio Lemaitre , Mark Alan Frontera , Antonio Caiafa , Jiahua Fan , Adam Budde
Abstract: An X-ray tube is provided. The X-ray tube includes an electron beam source including a cathode configured to emit an electron beam. The X-ray tube also includes an anode assembly including an anode configured to receive the electron beam and to emit X-rays when impacted by the electron beam. The X-ray tube further includes a gridding electrode disposed about a path of the electron beam between the electron beam source and the anode assembly. The gridding electrode, when powered at a specific level, is configured to grid the electron beam in synchronization with planned transitions during a dynamic focal spot mode.
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公开(公告)号：US20160242712A1
公开(公告)日：2016-08-25
申请号：US15044787
申请日：2016-02-16
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Yannan Jin , Bruno Kristiaan Bernard De Man , Peter Michael Edic , Paul Francis Fitzgerald , Xue Rui , Yangyang Yao , Zhye Yin , Uwe Wiedmann
CPC classification number: A61B6/405 , A61B6/032 , A61B6/4233 , A61B6/488 , A61B6/5205 , A61B6/542
Abstract: An imaging method includes executing a low-dose preparatory scan to an object by applying tube voltages and tube currents in an x-ray source, and generating a first image of the object corresponding to the low-dose preparatory scan. The method further includes generating image quality estimates and dose estimates view by view at least based on the first image. The method includes optimizing the tube voltages and the tube currents to generate optimal profiles for the tube voltage and the tube current. At least one of the optimal profiles for the tube voltage and the tube current is generated based on the image quality estimates and the dose estimates. The method includes executing an acquisition scan by applying the tube voltages and the tube currents based on the optimal profiles and generating a second image of the object corresponding to the acquisition scan. An imaging system is also provided.
Abstract translation: 成像方法包括通过在x射线源中施加管电压和管电流来对对象执行低剂量预备扫描，以及生成对应于低剂量预备扫描的对象的第一图像。 该方法还包括至少基于第一图像通过视图生成图像质量估计和剂量估计视图。 该方法包括优化管电压和管电流以产生管电压和管电流的最佳轮廓。 基于图像质量估计和剂量估计，产生管电压和管电流的最佳曲线中的至少一个。 该方法包括通过基于最佳轮廓施加管电压和管电流来执行采集扫描，并且生成对应于采集扫描的对象的第二图像。 还提供了一种成像系统。
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公开(公告)号：US20150137795A1
公开(公告)日：2015-05-21
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.
Abstract translation: 提供了用屏蔽导体测量电流的系统和方法。 一个系统包括屏蔽内的第一线，其中第一线连接在高电压源和x射线系统的细丝之间。 该系统还包括屏蔽内的第二导线，其中第二导线连接在高电压源和x射线系统之间，并且第一和第二导线的屏蔽处于x射线系统的高电压电位。 该系统还包括高电压电位的测量电阻器，其中测量电阻器连接在屏蔽层和第一或第二导线之一之间。
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Patent Agency Ranking
公开(公告)号：US20220037105A1
公开(公告)日：2022-02-03
申请号：US16944836
申请日：2020-07-31
Applicant: General Electric Company
Inventor： John Scott Price , Ye Bai , Antonio Caiafa , Vasile Bogdan Neculaes , Uwe Wiedmann
IPC: H01J29/68 , B29C64/273 , H01J37/30 , B29C64/153
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：US11094497B2
公开(公告)日：2021-08-17
申请号：US15442132
申请日：2017-02-24
Applicant: General Electric Company
Inventor： Yong Liang , Vance Scott Robinson , Uwe Wiedmann
Abstract: In one embodiment, an X-ray source includes a source target configured to generate X-rays when impacted by an electron beam. The source target includes one or more thermally conductive layers; and one or more X-ray generating layers interleaved with the thermally conductive layers, wherein at least one X-ray generating layer comprises regions of X-ray generating material separated by thermally conductive material within the respective X-ray generating layer.
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公开(公告)号：US10213172B2
公开(公告)日：2019-02-26
申请号：US15044787
申请日：2016-02-16
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Yannan Jin , Bruno Kristiaan Bernard De Man , Peter Michael Edic , Paul Francis Fitzgerald , Xue Rui , Yangyang Yao , Zhye Yin , Uwe Wiedmann
Abstract: An imaging method includes executing a low-dose preparatory scan to an object by applying tube voltages and tube currents in an x-ray source, and generating a first image of the object corresponding to the low-dose preparatory scan. The method further includes generating image quality estimates and dose estimates view by view at least based on the first image. The method includes optimizing the tube voltages and the tube currents to generate optimal profiles for the tube voltage and the tube current. At least one of the optimal profiles for the tube voltage and the tube current is generated based on the image quality estimates and the dose estimates. The method includes executing an acquisition scan by applying the tube voltages and the tube currents based on the optimal profiles and generating a second image of the object corresponding to the acquisition scan. An imaging system is also provided.
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公开(公告)号：US10165996B2
公开(公告)日：2019-01-01
申请号：US14871270
申请日：2015-09-30
Applicant: General Electric Company
Inventor： Priti Madhav , Uwe Wiedmann , Eric Biehr , Jiahua Fan , Jean-Francois Larroux , Vijay Subramanian
Abstract: An imaging system includes a computed tomography (CT) acquisition unit and a processing unit. The CT acquisition unit includes an X-ray source and a CT detector. The processing unit is configured to determine a voltage delivery configuration for the X-ray source based on at least one of a patient size, a clinical task, or scan parameters. The voltage delivery configuration includes at least one of a transition configuration or a voltage threshold. The transition configuration corresponds to a transition between a high voltage and a low voltage. Portions of acquired data acquired above the voltage threshold are grouped as high energy data and portions acquired below the voltage threshold are grouped as low energy data. The processing unit is also configured to implement the voltage delivery configuration on the CT acquisition unit, and to control the CT acquisition unit to perform an imaging scan using the determined voltage delivery configuration.
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公开(公告)号：US20170170652A1
公开(公告)日：2017-06-15
申请号：US15249030
申请日：2016-08-26
Applicant: General Electric Company
Inventor： ANTONIO CAIAFA , Phillipe Ernest , Dominique Poincloux , Uwe Wiedmann , Denis Perrillat-Amee
IPC: H02H9/00 , H02H1/04 , H03K17/081
Abstract: A circuit assembly and method use a breakover device that changes states in response to a change in electric energy in a helper circuit that supplies current from a power source to a powered system. The helper circuit includes an inductive element connected with the powered system. The breakover device is in a non-conducting state prior to a discharge event from the powered system to prevent the current from the power source from being conducted through the resistive element. The breakover device changes to a conducting state responsive to the powered system discharging current into the helper circuit. The breakover device conducts the current that is discharged from the powered system through the resistive element to reduce the electric energy in the helper circuit from the current that is discharged.
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