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21. 发明申请

US20070003018A1 HIGH VOLTAGE STABLE CATHODE FOR X-RAY TUBE 失效
标题翻译：用于X射线管的高压稳定阴极
公开(公告)号：US20070003018A1
公开(公告)日：2007-01-04
申请号：US11160623
申请日：2005-06-30
申请人： Sergio Lemaitre
发明人： Sergio Lemaitre
IPC分类号： H01J35/06 , H01J1/48
CPC分类号： H01J35/06 , H01J1/13 , H01J9/04 , Y10T29/49204
摘要： A method of producing a cathode for use in an x-ray tube assembly is provided including machining an emission aperture into a cup emission surface portion of a cup structure. The cup structure is comprised of a cup base portion opposite the cup emissions surface portion. Electro-discharge machining is used to form an electro-discharge machining slot into the cup structure to provide access to the interior of the cup structure. Electro-discharge machining is used to form a transverse coil chamber within the interior by way of the electro-discharge machining slot such that the transverse coil chamber is formed between the cup base portion and the cup emissions surface portion while retaining an essentially contiguous emissions surface perimeter surrounding the emission aperture.
摘要翻译：提供一种制造用于X射线管组件的阴极的方法，包括将排放孔加工到杯结构的杯排放表面部分中。杯结构包括与杯排放表面部分相对的杯基部。电放电加工用于在杯结构中形成放电加工槽以提供进入杯结构内部的通路。电放电加工用于通过放电加工槽在内部形成横向线圈室，使得横向线圈室形成在杯基部和杯发射表面部分之间，同时保持基本上邻接的发射表面围绕发射孔的周边。

22. 发明申请

US20050111625A1 RF ACCELERATOR FOR IMAGING APPLICATIONS 有权
标题翻译：用于成像应用的RF加速器
公开(公告)号：US20050111625A1
公开(公告)日：2005-05-26
申请号：US10904229
申请日：2004-10-29
申请人： Sergio Lemaitre
发明人： Sergio Lemaitre
IPC分类号： H01J3/02 , H01J35/06 , H05H7/18 , H05H15/00 , G21K1/12 , A61B6/00 , G01N23/00 , H01J35/30 , H05G1/60
CPC分类号： H01J35/06 , H01J3/021 , H05H7/18 , H05H15/00
摘要： The present invention is an RF cavity for accelerating electrons in imaging applications such as x-ray tubes and CT applications. An RF cavity having electron emitters placed therein accelerates the electrons across the cavity. The geometric shape of the cavity determines the electromagnetic modes that are employed for the acceleration of electrons. The fast electrons are used to generate x-rays by interacting with a target, either a solid or a liquid target. The electron accelerator may be used in an arc source for a stationary computed tomography application, in an x-ray tube, as a booster for an electron gun, and other imaging applications.
摘要翻译：本发明是用于在诸如x射线管和CT应用的成像应用中加速电子的RF腔。具有放置在其中的电子发射体的RF腔加速电子穿过空腔。空腔的几何形状确定了用于加速电子的电磁模式。快速电子用于通过与靶（无论是固体或液体靶）相互作用产生X射线。电子加速器可以用于固定计算机断层摄影应用的电弧源，在X射线管中，作为用于电子枪的增强器以及其他成像应用。

23. 发明授权

US06785359B2 Cathode for high emission x-ray tube 有权
公开(公告)号：US06785359B2
公开(公告)日：2004-08-31
申请号：US10064606
申请日：2002-07-30
申请人： Sergio Lemaitre
发明人： Sergio Lemaitre
IPC分类号： H01J3506
CPC分类号： H01J35/14 , H01J35/06
摘要： A method and apparatus for an x-ray tube having an emitter and a differentially biased emitter-cup cathode configured to provide an electron beam of substantially greater perveance and beam compression ratio than otherwise obtainable with conventional cathode designs is disclosed. The method and apparatus include a cathode assembly opposing an anode and spaced apart therefrom. The cathode is maintained during operation of the x-ray tube at a negative potential with respect to the anode. The cathode assembly includes an emitter for emitting an electron beam to a focal spot on the anode during operation of the x-ray tube and a cathode front member having an aperture defined by the cathode front member on a first side of the emitter. A backing is disposed on a second side of the emitter and is operably connected to the cathode front member via a backing insulator. The cathode further includes a means for applying a differential bias in the cathode assembly to variably change the focal spot size.

24. 发明申请

US20110255667A1 LOW BIAS mA MODULATION FOR X-RAY TUBES 有权
标题翻译：用于X射线管的低偏置mA调制
公开(公告)号：US20110255667A1
公开(公告)日：2011-10-20
申请号：US12760309
申请日：2010-04-14
申请人： Sergio Lemaitre
发明人： Sergio Lemaitre
IPC分类号： H05G1/52 , H01J35/08 , H01J35/06
CPC分类号： H01J35/06 , H01J2235/068 , H05G1/34
摘要： A segmented thermionic emitter is provided. The segmented thermionic emitter has, among other features, a plurality of segments substantially spanning an entire length of the thermionic emitter and aligned substantially parallel with one another. In one embodiment, the segmented thermionic emitter may allow milli-amp modulation of an X-ray tube at voltages less than approximately 2 kV.
摘要翻译：提供了分段热离子发射器。分段的热离子发射器具有基本跨越热离子发射器的整个长度并且基本上彼此平行排列的多个段。在一个实施例中，分段的热离子发射器可以允许在小于约2kV的电压下对X射线管进行毫安调制。

25. 发明授权

US08040035B2 Method of producing a high voltage stable cathode for an X-ray tube 有权
标题翻译：一种用于生产用于X射线管的高电压稳定阴极的方法
公开(公告)号：US08040035B2
公开(公告)日：2011-10-18
申请号：US12495886
申请日：2009-07-01
申请人： Sergio Lemaitre
发明人： Sergio Lemaitre
IPC分类号： H01J61/10
CPC分类号： H01J35/06 , H01J1/13 , H01J9/04 , Y10T29/49204
摘要： A method of producing a cathode for use in an x-ray tube assembly is provided including machining an emission aperture into a cup emission surface portion of a cup structure. The cup structure is comprised of a cup base portion opposite the cup emissions surface portion. Electro-discharge machining is used to form an electro-discharge machining slot into the cup structure to provide access to the interior of the cup structure. Electro-discharge machining is used to form a transverse coil chamber within the interior by way of the electro-discharge machining slot such that the transverse coil chamber is formed between the cup base portion and the cup emissions surface portion while retaining an essentially contiguous emissions surface perimeter surrounding the emission aperture.
摘要翻译：提供一种制造用于X射线管组件的阴极的方法，包括将排放孔加工到杯结构的杯排放表面部分中。杯结构包括与杯排放表面部分相对的杯基部。电放电加工用于在杯结构中形成放电加工槽以提供进入杯结构内部的通路。电放电加工用于通过放电加工槽在内部形成横向线圈室，使得横向线圈室形成在杯基部和杯发射表面部分之间，同时保持基本上邻接的发射表面围绕发射孔的周边。

26. 发明申请

US20110241575A1 PIERCE GUN AND METHOD OF CONTROLLING THEREOF 有权
标题翻译：琵琶枪及其控制方法
公开(公告)号：US20110241575A1
公开(公告)日：2011-10-06
申请号：US12750841
申请日：2010-03-31
申请人： Antonio Caiafa , Xi Zhang , Vance Robinson , Sergio Lemaitre
发明人： Antonio Caiafa , Xi Zhang , Vance Robinson , Sergio Lemaitre
IPC分类号： H01J29/48
CPC分类号： H01J35/06 , H05G1/32
摘要： A system and method for controlling the temperature of both an electron emitter and a filament to their lowest possible operating temperature is disclosed. The apparatus includes a filament, an electron emitter heated by the filament to generate an electron beam, and a power supply configured to supply power to each of the filament and the electron emitter. The apparatus also includes a control system to control a supply of power to each of the filament and the electron emitter, with the control system being configured to receive an input indicative of a desired electron emitter operating temperature, cause a desired voltage to be applied between the electron emitter and the filament, and cause a desired voltage to be applied to the filament based on the desired emitter element operating temperature, so as to minimize an operating temperature of the electron emitter and the filament.
摘要翻译：公开了一种用于将电子发射器和灯丝的温度控制到其最低可能工作温度的系统和方法。该装置包括灯丝，由灯丝加热以产生电子束的电子发射器，以及被配置为向灯丝和电子发射器中的每一个供电的电源。该装置还包括控制系统，用于控制向每个灯丝和电子发射器供电的功率，其中控制系统被配置为接收指示期望的电子发射器工作温度的输入，电子发射体和细丝，并且基于期望的发射极元件工作温度使所需的电压施加到灯丝，以使电子发射器和灯丝的工作温度最小化。

27. 发明申请

US20110150187A1 APPARATUS AND METHOD FOR CALIBRATING AN X-RAY TUBE 有权
标题翻译：用于校准X射线管的装置和方法
公开(公告)号：US20110150187A1
公开(公告)日：2011-06-23
申请号：US12646320
申请日：2009-12-23
申请人： John Moore Boudry , Sergio Lemaitre , Naveen Chandra
发明人： John Moore Boudry , Sergio Lemaitre , Naveen Chandra
IPC分类号： G01D18/00
CPC分类号： H05G1/46
摘要： An apparatus and method for calibrating an x-ray tube include a computer programmed to acquire a starter voltage/current value corresponding to a width, a length, or a position of a target focal spot capable of being generated by the x-ray tube. The computer is programmed to generate an electron beam and to steer the electron beam based on the starter voltage/current value. The computer is also programmed to steer the electron beam based on a value adjusted from the starter voltage/current value. The computer is programmed to calculate a final voltage/current value that is configured to generate the width, length, or position of the target focal spot based on the starter voltage/current value and the adjusted starter voltage/current value.
摘要翻译：用于校准X射线管的装置和方法包括被编程为获取对应于能够由X射线管产生的目标焦斑的宽度，长度或位置的起动器电压/电流值的计算机。计算机被编程为产生电子束并且基于起动器电压/电流值来控制电子束。计算机还被编程为基于从起动电压/电流值调整的值来引导电子束。计算机被编程为基于起动器电压/电流值和调整的启动器电压/电流值来计算被配置为产生目标焦点的宽度，长度或位置的最终电压/电流值。

28. 发明授权

US07450690B2 Reduced focal spot motion in a CT X-ray tube 有权
标题翻译：在CT X射线管中减少焦点运动
公开(公告)号：US07450690B2
公开(公告)日：2008-11-11
申请号：US11160796
申请日：2005-07-08
申请人： Wayne Frederick Block , Edward Emaci , Sergio Lemaitre , Ron Kent Hockersmith
发明人： Wayne Frederick Block , Edward Emaci , Sergio Lemaitre , Ron Kent Hockersmith
IPC分类号： H01J35/06 , H01J35/30 , H01J35/14 , H01J17/04 , H01J17/16
CPC分类号： H01J35/10 , H01J35/14 , H01J2235/1093 , H05G1/52
摘要： An x-ray tube assembly is provided comprising a tube casing assembly including a plurality of vertical mount posts. An insulator plate is mounted to the plurality of vertical mount posts such that the insulator plate can translate vertically on the posts. A cathode assembly is mounted to the insulator plate and generates both an eccentric moment and a vertical expansion in response to a cathode power load. A semi-compressible element is positioned between at least one of the vertical mount posts and the insulator plate. The semi-compressible element becomes incompressible at a cathode power threshold such that the vertical expansion is translated into a correction moment countering the eccentric moment.
摘要翻译：提供一种X射线管组件，其包括管壳组件，其包括多个垂直安装柱。绝缘板安装到多个垂直安装柱，使得绝缘板可以在柱上垂直平移。阴极组件安装到绝缘板上，并响应于阴极功率负载产生偏心力矩和垂直膨胀。半可压缩元件位于至少一个垂直安装柱和绝缘板之间。半可压缩元件在阴极功率阈值处变得不可压缩，使得垂直膨胀被转换成抵抗偏心力矩的校正时刻。

29. 发明授权

US07409043B2 Method and apparatus to control radiation tube focal spot size 有权
标题翻译：控制辐射管焦斑大小的方法和装置
公开(公告)号：US07409043B2
公开(公告)日：2008-08-05
申请号：US11439027
申请日：2006-05-23
申请人： Bruce Matthew Dunham , Jonathan Richard Schmidt , Sergio Lemaitre
发明人： Bruce Matthew Dunham , Jonathan Richard Schmidt , Sergio Lemaitre
IPC分类号： H05G1/32 , H05G1/34 , H05G1/46
CPC分类号： A61B6/032 , A61B6/027 , H01J35/14 , H05G1/26
摘要： A method for controlling focal spot size changes of an x-ray source in an imaging system includes measuring focal spot sizes as a function of a plurality of x-ray source operating parameters, determining a calibration table or transfer function utilizing the measured focal spot sizes as a function of the plurality of x-ray tube operating parameters, and utilizing the calibration table or transfer function to control focal spot size variations during operation of the imaging system.
摘要翻译：用于控制成像系统中的X射线源的焦点尺寸变化的方法包括测量作为多个x射线源操作参数的函数的焦斑尺寸，使用所测量的焦点尺寸确定校准表或传递函数作为多个x射线管操作参数的函数，并且利用校准表或传递函数来控制成像系统的操作期间的焦点尺寸变化。

30. 发明授权

US07206379B2 RF accelerator for imaging applications 有权
标题翻译： RF加速器用于成像应用
公开(公告)号：US07206379B2
公开(公告)日：2007-04-17
申请号：US10904229
申请日：2004-10-29
申请人： Sergio Lemaitre
发明人： Sergio Lemaitre
IPC分类号： H01J35/02 , H05G2/00
CPC分类号： H01J35/06 , H01J3/021 , H05H7/18 , H05H15/00
摘要： The present invention is an RF cavity for accelerating electrons in imaging applications such as x-ray tubes and CT applications. An RF cavity having electron emitters placed therein accelerates the electrons across the cavity. The geometric shape of the cavity determines the electromagnetic modes that are employed for the acceleration of electrons. The fast electrons are used to generate x-rays by interacting with a target, either a solid or a liquid target. The electron accelerator may be used in an arc source for a stationary computed tomography application, in an x-ray tube, as a booster for an electron gun, and other imaging applications.
摘要翻译：本发明是用于在诸如x射线管和CT应用的成像应用中加速电子的RF腔。具有放置在其中的电子发射体的RF腔加速电子穿过空腔。空腔的几何形状确定了用于加速电子的电磁模式。快速电子用于通过与靶（无论是固体或液体靶）相互作用产生X射线。电子加速器可以用于固定计算机断层摄影应用的电弧源，在X射线管中，作为用于电子枪的增强器以及其他成像应用。

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