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21. 发明授权

US5661774A Dual energy power supply 失效
标题翻译：双能源供电
公开(公告)号：US5661774A
公开(公告)日：1997-08-26
申请号：US671202
申请日：1996-06-27
申请人： Bernard M. Gordon , Hans Weedon , Iosif Izrailit , Timothy R. Fox , John F. Moore
发明人： Bernard M. Gordon , Hans Weedon , Iosif Izrailit , Timothy R. Fox , John F. Moore
IPC分类号： G01N23/18 , G01N23/04 , G01V5/00 , G21K5/02 , H05G1/26 , H05G1/32 , H05G1/34 , H05G1/10
CPC分类号： H05G1/34 , G01N23/046 , G01V5/0041 , H05G1/26 , G01N2223/419
摘要： The disclosed dual energy baggage scanning assembly includes a CT scanning system, and a conveyor belt for transporting items through the CT scanning system, and an improved power supply for the X-ray source of the CT scanner so that a dual energy beam is provided. The power supply alternately powers the X-ray tube of the scanning system at high and low voltage levels at a predetermined rate and comprises at least one high voltage DC power supply for providing a stable, high DC voltage the X-ray tube; means, including at least one waveform generator, for providing a periodic time varying waveform; and coupling means, including a transformer, for coupling the waveform generator to said DC voltage supply so that the total voltage across the cathode and anode of the tube is periodically changed between the high and low voltage levels at the predetermined rate in response to the periodic time varying waveform provided by the waveform generator.
摘要翻译：所公开的双能量行李扫描组件包括CT扫描系统和用于通过CT扫描系统传送物品的传送带，以及用于CT扫描器的X射线源的改进的电源，从而提供双能量束。电源以预定的速率以高低电压交替地对扫描系统的X射线管供电，并且包括至少一个用于提供X射线管的稳定的高DC电压的高压DC电源; 包括至少一个波形发生器的装置，用于提供周期性的时变波形; 以及包括变压器的耦合装置，用于将波形发生器耦合到所述DC电压源，使得响应于周期性的，以预定速率在管道的阴极和阳极之间的两端的总电压在高电压电平和低电压电平之间周期性地变化由波形发生器提供的时变波形。

22. 发明授权

US5625662A Modulating x-ray tube current in a CT system 失效
标题翻译：在CT系统中调制x射线管电流
公开(公告)号：US5625662A
公开(公告)日：1997-04-29
申请号：US560672
申请日：1995-11-20
申请人： Thomas L. Toth , Mark K. Limkeman
发明人： Thomas L. Toth , Mark K. Limkeman
IPC分类号： A61B6/03 , H05G1/26 , H05G1/34 , H05G1/60
CPC分类号： H05G1/60 , H05G1/26 , H05G1/34
摘要： The present invention, in one form, is an x-ray CT system that modulates x-ray tube current as a function of gantry angle and reconstruction algorithm weighting coefficients. View indexes are stored in a table, and during scanning, values are periodically read from this table to determine weighting coefficients. An algorithm is applied to the weighting coefficients to generate an x-ray tube modulating factor. This modulating factor is then applied to the x-ray tube current to generate modulated x-ray tube current.
摘要翻译：本发明以一种形式是一种x射线CT系统，其将X射线管电流作为机架角度和重建算法加权系数的函数进行调制。视图索引存储在表中，并且在扫描期间，从该表周期性地读取值以确定加权系数。将一个算法应用于加权系数以产生X射线管调制因子。然后将该调节因子施加到X射线管电流以产生调制的X射线管电流。

23. 发明授权

US5450467A Laser target selector device for X-ray projection tubes 失效
标题翻译：用于X射线投影管的激光靶选择器
公开(公告)号：US5450467A
公开(公告)日：1995-09-12
申请号：US226941
申请日：1994-04-13
申请人： Anthony J. Pellegrino , Earl C. Mayes , Donald E. Sharpe , George H. Bantz
发明人： Anthony J. Pellegrino , Earl C. Mayes , Donald E. Sharpe , George H. Bantz
IPC分类号： H02M7/10 , H05G1/04 , H05G1/10 , H05G1/20 , H05G1/34 , A61B6/08
CPC分类号： H05G1/04 , H02M7/106 , H05G1/025 , H05G1/10 , H05G1/20 , H05G1/34
摘要： A laser target selector incorporating a flexible tension coil spring removeably mountable on an X-ray tube's projection portal for illuminating a target spot to allow adjusted aiming of the X-ray beam.
摘要翻译：一种激光瞄准器，其包括柔性张力螺旋弹簧，其可移除地安装在X射线管的投影入口上，用于照射目标点以允许调整X射线束的瞄准。

24. 发明授权

US5442678A X-ray source with improved beam steering 失效
标题翻译：具有改进的光束转向的X射线源
公开(公告)号：US5442678A
公开(公告)日：1995-08-15
申请号：US184021
申请日：1994-01-21
申请人： Mark T. Dinsmore , Donald O. Smith
发明人： Mark T. Dinsmore , Donald O. Smith
IPC分类号： A61B19/00 , A61N5/10 , H01B11/22 , H01J35/00 , H01J35/06 , H01J35/08 , H01J35/14 , H01J35/30 , H01J35/32 , H05G1/00 , H05G1/06 , H05G1/10 , H05G1/32 , H05G1/34
CPC分类号： A61N5/1001 , A61B90/11 , H01J35/065 , H01J35/08 , H01J35/30 , H01J35/32 , H05G1/06 , H05G1/10 , H05G1/32 , H05G1/34 , A61B2090/101 , A61N2005/1005 , H01J2201/342
摘要： This invention is directed to an x-ray source comprising a housing, an elongated tubular probe, a target assembly, and a beam steering assembly. The housing encloses an electron beam source, and has elements for generating an electron beam along a beam path. The elongated tubular probe extends along a central axis from the housing about the beam path. The target assembly extends along the central axis and is adapted for coupling to the end of the probe distal form the housing. The target assembly includes a target element positioned along the beam path, wherein the target element is adapted to emit x-rays in a predetermined spectral range in response to incident electrons. The beam steering assembly includes a deflection element, a feedback network, and a deflection controller. The deflection element deflects the beam from a nominal axis to a selected surface region on the target element in response to a deflection control signal. The feedback network includes deflection sensing elements for sensing the deflection of the beam and elements for generating a feedback signal representative thereof. The deflection controller couples to the deflection element and to the feedback network and includes elements for generating a deflection control signal in response to the feedback signal.
摘要翻译：本发明涉及一种包括壳体，细长管状探针，目标组件和射束转向组件的X射线源。壳体包围电子束源，并且具有用于沿着光束路径产生电子束的元件。细长管状探针沿着中心轴线从壳体围绕光束路径延伸。目标组件沿着中心轴线延伸并且适于从外壳的远端连接到探头的端部。目标组件包括沿着光束路径定位的目标元件，其中目标元件适于响应入射电子在预定光谱范围内发射x射线。光束转向组件包括偏转元件，反馈网络和偏转控制器。响应于偏转控制信号，偏转元件将光束从标称轴偏转到目标元件上的选定表面区域。反馈网络包括用于感测波束和元件的偏转的偏转感测元件，用于产生代表其的反馈信号。偏转控制器耦合到偏转元件和反馈网络，并且包括用于响应于反馈信号产生偏转控制信号的元件。

25. 发明授权

US5422926A X-ray source with shaped radiation pattern 失效
标题翻译：具有形状辐射图的X射线源
公开(公告)号：US5422926A
公开(公告)日：1995-06-06
申请号：US184271
申请日：1994-01-21
申请人： Donald O. Smith , Alan P. Sliski , Kenneth J. Harte , Mark T. Dinsmore
发明人： Donald O. Smith , Alan P. Sliski , Kenneth J. Harte , Mark T. Dinsmore
IPC分类号： A61B19/00 , A61N5/10 , H01B11/22 , H01J35/00 , H01J35/06 , H01J35/08 , H01J35/14 , H01J35/30 , H01J35/32 , H05G1/00 , H05G1/06 , H05G1/10 , H05G1/32 , H05G1/34
CPC分类号： A61N5/1001 , A61B90/11 , H01J35/065 , H01J35/08 , H01J35/30 , H01J35/32 , H05G1/06 , H05G1/10 , H05G1/32 , H05G1/34 , A61B2090/101 , A61N2005/1005 , H01J2201/342
摘要： The present invention is directed to an x-ray source for irradiating a volume in accordance with a predetermined dose distribution. The source comprises a housing, an elongated tubular probe, and a target assembly. The housing encloses an electron beam source and includes elements for generating an electron beam along a beam path. The tubular probe extends along a central axis from the housing about the beam path. The target assembly extends along the central axis and is adapted for coupling to the end of the probe distal from the housing. The target assembly includes a target element, a probe tip assembly, and a variable transmission shield. The target element is positioned in the beam path. The target element is adapted to emit x-rays in response to electrons incident thereon from the beam. The probe tip assembly and associated control electronics include elements for positioning the target element in the beam path, and is substantially x-ray transparent. The variable transmission shield is positioned on an outer surface of the probe tip assembly, and is adapted to control the position of the isodose surfaces of the x-rays emitted from the target and passing through the probe tip assembly.
摘要翻译：本发明涉及一种用于根据预定剂量分布照射体积的x射线源。源包括壳体，细长管状探针和目标组件。壳体包围电子束源并且包括用于沿着光束路径产生电子束的元件。管状探针沿着中心轴线从壳体围绕光束路径延伸。目标组件沿着中心轴线延伸并且适于联接到远离壳体的探针的端部。目标组件包括目标元件，探针尖端组件和可变透射屏蔽。目标元件位于光束路径中。目标元件适于响应于从光束入射到其上的电子而发射X射线。探针尖端组件和相关联的控制电子器件包括用于将目标元件定位在光束路径中的元件，并且基本上是x射线透明的。可变透射屏蔽定位在探针头组件的外表面上，并且适于控制从靶发射并穿过探针头组件的X射线的等剂量表面的位置。

26. 发明授权

US5369679A Low power x-ray source with implantable probe for treatment of brain tumors 失效
标题翻译：用于治疗脑肿瘤的可植入探针的低功率x射线源
公开(公告)号：US5369679A
公开(公告)日：1994-11-29
申请号：US955494
申请日：1992-10-02
申请人： Alan P. Sliski , Mark T. Dinsmore , Anthonius J. Boom , Nicholas T. Zervas
发明人： Alan P. Sliski , Mark T. Dinsmore , Anthonius J. Boom , Nicholas T. Zervas
IPC分类号： A61N5/10 , H01J35/00 , H01J35/22 , H01J35/32 , H05G1/00 , H05G1/06 , H05G1/10 , H05G1/20 , H05G1/32 , H05G1/34 , H01J35/14
CPC分类号： A61N5/1001 , H01J35/32 , H05G1/06 , H05G1/10 , H05G1/32 , H05G1/34 , A61N2005/1005
摘要： An apparatus for treating a brain tumor in a patient, which includes an x-ray source of preselected or preprogrammed duration and intensity assembled in combination with a reference frame. The reference frame can be, for example, a stereotactic frame. The apparatus allows accurate positioning of the x-ray source within or adjacent to the desired region to be irradiated in the brain of the patient.
摘要翻译：一种用于治疗患者的脑肿瘤的装置，其包括与参考框架组合的预选或预编程的持续时间和强度的x射线源。参考框架可以是例如立体定向框架。该装置允许将x射线源精确地定位在要照射在患者脑内的所需区域内或邻近。

27. 发明授权

US5339349A Portable x-ray unit 失效
标题翻译：便携式X光单元
公开(公告)号：US5339349A
公开(公告)日：1994-08-16
申请号：US966433
申请日：1992-10-26
申请人： Millan Y. Xeno
发明人： Millan Y. Xeno
IPC分类号： H05G1/10 , H05G1/26 , H05G1/32 , H05G1/34 , H05G1/54 , H02M3/335
CPC分类号： H05G1/10 , H05G1/26 , H05G1/32 , H05G1/34 , H05G1/54
摘要： A light-weight portable x-ray unit utilizable in a field environment having a high voltage transformer and electronic circuitry for emulating a full-wave power supply to a radiation emitting x-ray tube.
摘要翻译：一种在具有高电压变压器的现场环境中可用的轻便便携式x射线单元，以及用于模拟向辐射发射X射线管的全波电源的电子电路。

28. 发明授权

US5333169A Circuit arrangement for measuring the X-ray tube current 失效
标题翻译：用于测量X射线管电流的电路布置
公开(公告)号：US5333169A
公开(公告)日：1994-07-26
申请号：US84144
申请日：1993-07-01
申请人： Detlef Koertge
发明人： Detlef Koertge
IPC分类号： G01R15/14 , H05G1/26 , H05G1/34 , H05G1/20
CPC分类号： G01R15/14 , H05G1/265 , H05G1/34
摘要： A circuit arrangement for accurately measuring the x-ray tube current substantially eliminates measurement errors by taking the displacement current caused by the capacitance of the high-voltage cable into account in the measurement. A test voltage is taken across a precision resistor. Another voltage is tapped at a location which includes the high-voltage cable capacitance and is supplied to a status monitor which differentiates this voltage and generates a voltage signal which is superimposed on the test voltage for forming a current signal which accurately represents the x-ray tube current.
摘要翻译：用于精确测量X射线管电流的电路装置通过在测量中考虑由高压电缆的电容引起的位移电流，基本上消除了测量误差。测试电压通过精密电阻。在包括高压电缆电容的位置处抽出另一个电压，并将其提供给状态监视器，其区分该电压并产生叠加在测试电压上的电压信号，以形成精确表示x射线的电流信号管电流。

29. 发明授权

US4768216A Dynamic calibration for an X-ray machine 失效
标题翻译： X光机的动态校准
公开(公告)号：US4768216A
公开(公告)日：1988-08-30
申请号：US83626
申请日：1987-08-07
申请人： James R. Harvey , Karen M. Biesel , Richard L. Anderton
发明人： James R. Harvey , Karen M. Biesel , Richard L. Anderton
IPC分类号： H05G1/26 , H05G1/32 , H05G1/34
CPC分类号： H05G1/32 , H05G1/265 , H05G1/34
摘要： A dynamic calibration and self-check circuit for a mobile X-ray machine. A high voltage regulator circuit provides dynamic regulation of peak anode voltage and a tube current regulator circuit provides dynamic regulation of the X-ray filament current which controls the X-ray tube current. In the regulation of the anode voltage, a voltage sensor provides continuous feedback of the actual anode voltage of the tube to the regulation circuit. A processor selects a predetermined value for the pulse width duration of the high voltage regulator. When an exposure cycle commences, the preselective value is compared with the actual sensed value in an error amplifier. The error amplifier generates an error signal which varies the pulse width of the drive signal to control the peak high voltage to the anode. In the control of the tube current, a sensor which measures the actual tube current is compared with a predetermined value selected by the processor in a second error amplifier. Also, a pulse width modulator provides a filament driving signal of a preselected duration. A regulator circuit accepts a filament amplitude control signal and causes the regulator to control the amplitude of the filament drive signal during the preheat phase prior to the X-ray exposure. Once the exposure cycle commences, the error signal is coupled to the regulator and the amplitude of the filament drive signal is adjusted dynamically to maintain a desired filament temperature.
摘要翻译：用于移动X光机的动态校准和自检电路。高压调节电路提供峰值阳极电压的动态调节，并且管电流调节器电路提供控制X射线管电流的X射线灯丝电流的动态调节。在调节阳极电压时，电压传感器将管的实际阳极电压连续反馈到调节电路。处理器为高电压调节器的脉冲宽度持续时间选择预定值。当曝光周期开始时，将预选值与误差放大器中的实际检测值进行比较。误差放大器产生误差信号，该误差信号改变驱动信号的脉冲宽度，以控制与阳极的峰值高电压。在管电流的控制中，将测量实际管电流的传感器与由第二误差放大器中的处理器选择的预定值进行比较。此外，脉冲宽度调制器提供预选持续时间的灯丝驱动信号。调节器电路接受灯丝振幅控制信号，并且使得调节器在X射线曝光之前的预热阶段期间控制灯丝驱动信号的幅度。一旦曝光周期开始，误差信号耦合到调节器，并且动态地调节灯丝驱动信号的幅度以保持期望的灯丝温度。

30. 发明授权

US4747118A X-ray examination system and method of controlling an exposure therein 失效
标题翻译： X射线检查系统及其中的曝光控制方法
公开(公告)号：US4747118A
公开(公告)日：1988-05-24
申请号：US856611
申请日：1986-04-25
申请人： Willem E. Spaak
发明人： Willem E. Spaak
IPC分类号： G01N23/04 , H04N5/32 , H05G1/44 , H05G1/46 , H05G1/34
CPC分类号： H05G1/44 , H04N5/32 , H05G1/46
摘要： An X-ray examination system comprising an X-ray generator, an image intensifier tube connected to an output optical path and an X-ray exposure control arrangement which measures the light image intensity LI at the output of the image intensifier during fluoroscopy, and from the relationshipI.sub.EXP1 =(LA.times.I.sub.FL)/LI.times.T.sub.EXP),derives the exposure value I.sub.EXP1 of the switch-on tube current required to provide a desired exposure density during subsequent fluorography with a tube voltage V.sub.FL and exposure time T.sub.EXP, and wherein LA is a predetermined constant.
摘要翻译：一种X射线检查系统，包括X射线发生器，连接到输出光路的图像增强器管和X射线曝光控制装置，其在荧光透视期间测量图像增强器的输出处的光图像强度LI， IEXP1 =（LAxIFL）/ LIxTEXP）的关系导出在随后的荧光成像期间用管电压VFL和曝光时间TEXP提供期望的曝光密度所需的接通管电流的曝光值IEXP1，并且其中LA是预定常数。

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