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1. 发明申请

US20050094762A1 Method and apparatus for z-axis tracking and collimation 有权
公开(公告)号：US20050094762A1
公开(公告)日：2005-05-05
申请号：US10696343
申请日：2003-10-29
申请人： Bruce Dunham , John Price
发明人： Bruce Dunham , John Price
IPC分类号： G21K5/00 , A61B6/00 , A61B6/03 , A61B6/06 , G21K5/02 , H01J35/14 , H01J35/30 , H05G1/00 , H05G1/34 , H05G1/52 , G21K1/12 , A61B6/14 , G01N23/00 , H05G1/60
CPC分类号： A61B6/583 , A61B6/032 , A61B6/06 , A61B6/4021 , H01J35/14 , H05G1/52
摘要： A method for adjusting a focal spot position during a scan of a computed tomography (CT) imaging system having a z-axis. The CT imaging system includes a detector array having a plurality of detector elements and an x-ray tube configured to direct an x-ray beam towards the detector through an object to be imaged. The method includes turning on the x-ray tube and reading a z-ratio from the detector. A shift in a position of a focal spot of the x-ray tube is then determined utilizing the read z-ratio. The method further includes using a transfer function to determine a compensating electronic deflection value; and applying the electronic deflection value to the x-ray tube as at least one of a deflection voltage or a deflection current to track the focal spot in the z-axis direction.

2. 发明申请

US20060098780A1 Electron emitter assembly and method for adjusting a size of electron beams 失效
公开(公告)号：US20060098780A1
公开(公告)日：2006-05-11
申请号：US10904286
申请日：2004-11-02
申请人： Bruce Dunham , John Price , Colin Wilson
发明人： Bruce Dunham , John Price , Colin Wilson
IPC分类号： H05G2/00 , G21G4/00 , H01J35/00
CPC分类号： H01J35/065 , A61B6/032 , A61B6/4028
摘要： An electron emitter assembly and a method for adjusting a size of electron beams are provided. The electron emitter assembly includes a laser configured to emit a first light beam. The electron emitter assembly further includes a lens assembly configured to receive the first light beam. The lens assembly is configured to adjust a size of the first light beam between a first predetermined size and a second predetermined size larger than the first predetermined size. The lens assembly emits the first light beam toward a photo-cathode. The photo-cathode is configured to emit a first electron beam having a third predetermined size when the first light beam having the first predetermined size contacts the photo-cathode. The photo-cathode is further configured to emit a second electron beam having a fourth predetermined size when the first light beam having the second predetermined size contacts the photo-cathode. The electron emitter assembly further includes an anode configured to receive the first and second electrons beams from the photo-cathode.

3. 发明申请

US20050175151A1 EMITTER ARRAY CONFIGURATIONS FOR A STATIONARY CT SYSTEM 有权
标题翻译：用于静息CT系统的发射机阵列配置
公开(公告)号：US20050175151A1
公开(公告)日：2005-08-11
申请号：US10708048
申请日：2004-02-05
申请人： Bruce Dunham , Colin Wilson , John Price
发明人： Bruce Dunham , Colin Wilson , John Price
IPC分类号： G21K5/02 , A61B6/03 , G21K5/04 , H01J35/00 , H01J35/06 , H01J35/14 , H01J35/22 , H01J35/32 , H05G1/60
CPC分类号： A61B6/032 , A61B6/4028 , A61B6/4488 , H01J35/065 , H01J35/14 , H01J2235/02 , H01J2235/06
摘要： An field emitter array system (10) includes a housing (50). An emitter array (80) generates an electron beam and has multiple emitter elements (81) that are disposed within the housing (50). Each of the emitter elements has multiple activation connections (92).
摘要翻译：场发射器阵列系统（10）包括壳体（50）。发射极阵列（80）产生电子束并具有设置在壳体（50）内的多个发射极元件（81）。每个发射器元件具有多个激活连接（92）。

4. 发明申请

US20060222147A1 System and method for X-ray generation 失效
标题翻译：用于X射线产生的系统和方法
公开(公告)号：US20060222147A1
公开(公告)日：2006-10-05
申请号：US11096488
申请日：2005-03-31
申请人： Robert Filkins , John Price , Brian Lawrence , Matthew Nielsen , Joseph Manak , Bruce Dunham
发明人： Robert Filkins , John Price , Brian Lawrence , Matthew Nielsen , Joseph Manak , Bruce Dunham
IPC分类号： H05G2/00 , G21G4/00 , H01J35/00
CPC分类号： H05G2/00
摘要： A system for generating a tunable X-ray pulse comprises a first electron beam source configured to direct a first electron pulse of predetermined energy and pulse length towards a first interaction zone, a laser beam source configured to direct a first photon pulse of predetermined energy and pulse length towards the first interaction zone to interact with the first electron pulse. The first interaction produces a substantially monochromatic second photon pulse of higher photon energy directed towards a second interaction zone, and a second electron beam source configured to direct a second electron pulse of predetermined energy and pulse length towards the second interaction zone so that the second interaction produces an X-ray pulse of predetermined energy and pulse length in a cascaded inverse Compton scattering (ICS) configuration.
摘要翻译：一种用于产生可调谐X射线脉冲的系统包括：第一电子束源，被配置为将预定能量和脉冲长度的第一电子脉冲引导到第一相互作用区域，激光束源被配置为引导预定能量的第一光子脉冲;以及脉冲长度朝向第一相互作用区域与第一电子脉冲相互作用。所述第一相互作用产生指向第二相互作用区的较高光子能量的基本上单色的第二光子脉冲，以及被配置成将预定能量和脉冲长度的第二电子脉冲引向所述第二相互作用区域的第二电子束源，在级联反康普顿散射（ICS）配置中产生预定能量和脉冲长度的X射线脉冲。

5. 发明申请

US20060098783A1 ELECTRON EMITTER ASSEMBLY AND METHOD FOR ADJUSTING A POWER LEVEL OF ELECTRON BEAMS 有权
标题翻译：电子发射器组件和调整电子束功率电平的方法
公开(公告)号：US20060098783A1
公开(公告)日：2006-05-11
申请号：US10904284
申请日：2004-11-02
申请人： Bruce Dunham , John Price , Colin Wilson
发明人： Bruce Dunham , John Price , Colin Wilson
IPC分类号： H01J35/22 , H01J35/00 , H01J35/32
CPC分类号： H01J35/065 , H01J35/24 , H01J2235/062 , H01J2235/068 , H01J2235/087
摘要： An electron emitter assembly and a method for adjusting a power level of an electron beam are provided. The electron emitter assembly includes a laser configured to emit a first light beam. The electron emitter assembly further includes a light-attenuating device configured to receive the first light beam and to attenuate the first light beam between a first light intensity and a second light intensity greater than the first light intensity. The electron emitter assembly further includes a photo-cathode configured to receive the first light beam from the light-attenuating device. The photo-cathode is further configured to emit a first electron beam having a first power level in response to receiving the first light beam having the first light intensity. The photo-cathode is further configured to emit a second electron beam having a second power level greater than the first power level in response to receiving the first light beam having the second light intensity. The electron emitter assembly further includes an anode configured to receive the first and second electrons beams from the photo-cathode.
摘要翻译：提供了一种用于调节电子束功率电平的电子发射器组件和方法。电子发射器组件包括被配置为发射第一光束的激光器。电子发射器组件还包括被配置为接收第一光束并且在第一光强度和大于第一光强度的第二光强度之间衰减第一光束的光衰减器件。电子发射器组件还包括被配置为从光衰减装置接收第一光束的光阴极。光阴极还被配置为响应于接收到具有第一光强度的第一光束而发射具有第一功率电平的第一电子束。响应于接收到具有第二光强度的第一光束，光阴极还被配置为发射具有大于第一功率电平的第二功率电平的第二电子束。电子发射器组件还包括被配置为从光阴极接收第一和第二电子束的阳极。

6. 发明申请

US20050147199A1 Systems and methods for generating images by using monochromatic x-rays 失效
标题翻译：使用单色X射线产生图像的系统和方法
公开(公告)号：US20050147199A1
公开(公告)日：2005-07-07
申请号：US10747510
申请日：2003-12-29
申请人： Bruce Dunham , John Price
发明人： Bruce Dunham , John Price
IPC分类号： A61B6/03 , H05G2/00 , G01T1/00 , A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： A61B6/482 , A61B6/032 , A61B6/4241 , H05G2/00
摘要： A system for generating images by using monochromatic x-rays is described. The system includes an accelerator configured to increase energy of an electron beam, at least one detector element configured to receive x-rays having multiple energies generated by interaction of the electron beam with at least one laser beam, and an image reconstructor configured to reconstruct at least one image by processing the x-rays.
摘要翻译：描述了通过使用单色x射线产生图像的系统。该系统包括加速器，其被配置为增加电子束的能量，至少一个检测器元件被配置为接收具有由电子束与至少一个激光束的相互作用产生的多个能量的x射线，以及被配置为在通过处理x射线至少一个图像。

7. 发明申请

US20060104418A1 WIDE SCANNING X-RAY SOURCE 有权
标题翻译：宽扫描X射线源
公开(公告)号：US20060104418A1
公开(公告)日：2006-05-18
申请号：US10904560
申请日：2004-11-16
申请人： Bruce Dunham , John Price
发明人： Bruce Dunham , John Price
IPC分类号： H01J35/08
CPC分类号： H01J35/10 , H01J35/14 , H01J35/30 , H01J2235/086
摘要： An imaging tube (12) includes a cathode (30) that emits an electron beam (32) and an anode (38). The anode (38) includes multiple target surfaces (36). Each of the target surfaces (36) has a focal spot that receives the electron beam (32). The target surfaces (36) generate multiple x-ray beams (42) in response to the electron beam (32). Each x-ray beam (42) is associated with one of the target surfaces (36). An x-ray imaging system (10) includes the cathode (30) and the anode (38). A controller (28) is electrically coupled to the cathode (30) and adjusts emission of the electron beam (32) on the anode (38).
摘要翻译：成像管（12）包括发射电子束（32）和阳极（38）的阴极（30）。阳极（38）包括多个目标表面（36）。每个目标表面（36）具有接收电子束（32）的焦点。目标表面（36）响应于电子束（32）产生多个X射线束（42）。每个X射线束（42）与目标表面（36）中的一个相关联。 x射线成像系统（10）包括阴极（30）和阳极（38）。控制器（28）电耦合到阴极（30）并且调节阳极（38）上的电子束（32）的发射。

8. 发明申请

US20060098782A1 ELECTRON EMITTER ASSEMBLY AND METHOD FOR GENERATING ELECTRON BEAMS 有权
标题翻译：电子发射器组件和用于产生电子束的方法
公开(公告)号：US20060098782A1
公开(公告)日：2006-05-11
申请号：US10904280
申请日：2004-11-02
申请人： Bruce Dunham , John Price , Colin Wilson
发明人： Bruce Dunham , John Price , Colin Wilson
IPC分类号： H01J35/22 , H01J35/00 , H01J35/32
CPC分类号： H01J35/065 , A61B6/032 , A61B6/4028 , H01J2235/064
摘要： An electron emitter assembly and a method for generating an electron beam are provided. The electron emitter assembly includes a laser configured to emit a first light beam and a second light beam. The electron emitter assembly further includes a mirror configured to move to a first operational position to reflect the first light beam toward a first region of a photo-cathode. The mirror is further configured to move to a second operational position to reflect the second light beam toward a second region of the photo-cathode. The photo-cathode is configured to emit a first electron beam when the first light beam contacts the first region and to emit a second electron beam when the second light beam contacts the second region. The electron emitter assembly further includes an anode configured to receive the first and second electron beams from the photo-cathode.
摘要翻译：提供了一种电子发射器组件和一种用于产生电子束的方法。电子发射器组件包括被配置为发射第一光束和第二光束的激光器。电子发射器组件还包括被配置为移动到第一操作位置以将第一光束朝向光阴极的第一区域反射的反射镜。反射镜还被配置成移动到第二操作位置以将第二光束反射到光 - 阴极的第二区域。当第二光束接触第二区域时，光阴极被配置为当第一光束接触第一区域时发射第一电子束并发射第二电子束。电子发射器组件还包括被配置为从光阴极接收第一和第二电子束的阳极。

9. 发明申请

US20060215890A1 Method and system for diagnosing an imaging system 有权
公开(公告)号：US20060215890A1
公开(公告)日：2006-09-28
申请号：US11086536
申请日：2005-03-22
申请人： Bruce Dunham
发明人： Bruce Dunham
IPC分类号： G06K9/00
CPC分类号： H05G1/26
摘要： A method and system for diagnosing an imaging system are provided. The method includes varying a system parameter of the imaging system. The method further includes obtaining a first data set at a first state of the varied system parameter and a second data set at a second state of the varied system parameter.

10. 发明申请

US20050047551A1 METHOD FOR TUBE SPIT CORRECTION BASED ON HIGH VOLTAGE OUTPUT 有权
标题翻译：基于高压输出的管腔修正方法
公开(公告)号：US20050047551A1
公开(公告)日：2005-03-03
申请号：US10604956
申请日：2003-08-28
申请人： Fang Dong , Jiang Hsieh , Bruce Dunham , Clarence Gordon
发明人： Fang Dong , Jiang Hsieh , Bruce Dunham , Clarence Gordon
IPC分类号： A61B6/03 , G01D18/00 , H05G1/00 , H05G1/26
CPC分类号： H05G1/265 , A61B6/03
摘要： The present invention provides a method to detect tube spits and to reduce spit related artifacts in a computed tomography imaging system. A way of detecting tube spit is to monitor the generator kilovolt or milliamp waveforms. Changes in kV waveform follow closely with those in offset-corrected projection data. If a tube-spit event is not detected, processing proceeds without tube spit correction. If a tube-spit event is detected, a tube spit correction is performed. The objective of tube-spit correction is to remove image artifacts due to the occurrence of a tube-spit event.
摘要翻译：本发明提供了一种在计算机断层成像系统中检测管唾液并减少呕吐相关赝像的方法。检测管唾液的一种方法是监测发生器千伏或毫安波形。 kV波形的变化与偏移校正投影数据中的变化密切相关。如果没有检测到管痰事件，则处理过程不进行管口修复。如果检测到管痰事件，则执行管痰修正。管道修正的目的是消除由于管it事件的发生引起的图像伪影。

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