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21. 发明申请

US20150342013A1 CT DEVICES AND METHODS THEREOF 有权
标题翻译： CT装置及其方法
公开(公告)号：US20150342013A1
公开(公告)日：2015-11-26
申请号：US14758484
申请日：2013-11-21
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Chuanxiang Tang , Ziran Zhao , Zhe Zhang
IPC分类号： H05G1/10 , A61B6/03 , G01N23/04
CPC分类号： H05G1/10 , A61B6/032 , A61B6/40 , A61B6/4064 , G01N23/046 , G01N2223/308 , G01N2223/419 , H01J35/06 , H01J35/08 , H01J2235/086
摘要： CT devices and methods thereof are disclosed. The CT device comprises a circular electron beam emission array including a plurality of electron beam emission units that are distributed uniformly along a circle, wherein each electron beam emission unit emits electron beams that are substantially parallel to an axis of the circular electron beam emission array in sequence under the control of a control signal; a circular reflection target which is disposed to be coaxial with the circular electron beam emission array, wherein the electron beams bombard the circular reflection target to generate X-rays that intersect the axis of the circular electron beam emission array; and a circular detector array which is disposed to be coaxial with the circular reflection target and configured to include a plurality of detection units which receive the X-rays after they have passed through an object to be detected.
摘要翻译：公开了CT装置及其方法。 CT装置包括圆形电子束发射阵列，其包括沿着圆均匀分布的多个电子束发射单元，其中每个电子束发射单元发射基本上平行于圆形电子束发射阵列的轴的电子束，控制信号控制下的序列; 设置为与圆形电子束发射阵列同轴的圆形反射目标，其中电子束轰击圆形反射目标以产生与圆形电子束发射阵列的轴相交的X射线; 以及圆形检测器阵列，其设置成与圆形反射目标同轴并且被配置为包括多个检测单元，其在它们已经通过待检测物体之后接收X射线。

22. 发明授权

US11054542B2 Multi-ray-source accelerator and inspection method 有权
公开(公告)号：US11054542B2
公开(公告)日：2021-07-06
申请号：US16946953
申请日：2020-07-13
申请人： Tsinghua University , Nuctech Company Limited
发明人： Kejun Kang , Huaibi Chen , Yaohong Liu , Chuanxiang Tang , Yuanjing Li , Hao Zha , Liang Zhang
IPC分类号： G01V5/00
摘要： Embodiments of the disclosure provide a multi-ray-source accelerator and an inspection method. The multi-ray-source accelerator includes: a plurality of acceleration tubes, each acceleration tube of the plurality of acceleration tubes including an acceleration tube body that defines at least one cavity, the plurality of acceleration tubes being arranged in at least one row along a straight line or an arc and connected in series with each other; and a microwave unit configured to provide a microwave field to the plurality of acceleration tubes. The plurality of acceleration tubes are arranged to allow the microwave unit to provide the microwave field from an acceleration tube at one end of the plurality of acceleration tubes so as to accelerate electron beams in cavities of all the acceleration tubes.

23. 发明授权

US10274636B2 X-ray fluoroscopic imaging system 有权
公开(公告)号：US10274636B2
公开(公告)日：2019-04-30
申请号：US14582076
申请日：2014-12-23
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Huaping Tang , Zhiqiang Chen , Chuanxiang Tang , Huaibi Chen , Yuanjing Li , Ziran Zhao , Yaohong Liu , Shangmin Sun , Xinshui Yan , Zhanfeng Qin
IPC分类号： G01V5/00 , G03C9/00 , G01N23/04
摘要： The present invention may perform fluoroscopic imaging simultaneously on the subjects in at least two channels using only one electron accelerator, at least two sets of X-ray beams and at least two sets of detector systems, through the design of the electron accelerator, the shielding and collimating device, the at least two detector arrays and various mechanical composite structures. The X-ray fluoroscopic imaging system according to the present invention may be designed in specific forms of a stationary type, an assembled type, a track mobile type or vehicular mobile type, etc., and has advantages such as simple structure, low cost, strong function, good image quality and the like.

24. 发明授权

US09991085B2 Apparatuses and methods for generating distributed x-rays in a scanning manner 有权
公开(公告)号：US09991085B2
公开(公告)日：2018-06-05
申请号：US15696919
申请日：2017-09-06
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Yuanjing Li , Yaohong Liu , Jinsheng Liu , Huaping Tang , Chuanxiang Tang , Huaibi Chen , Xinshui Yan
IPC分类号： H01J35/14 , H01J35/16 , H01J35/30
CPC分类号： H01J35/14 , H01J35/16 , H01J35/30 , H01J2235/16
摘要： An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.

25. 发明授权

US09780426B2 Phase shifter, accelerator and method of operating the same 有权
公开(公告)号：US09780426B2
公开(公告)日：2017-10-03
申请号：US15281026
申请日：2016-09-29
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Jiaru Shi , Ping Wang , Chuanxiang Tang , Huaibi Chen , Yaohong Liu , Xinshui Yan , Wenhui Huang
IPC分类号： H01P1/18 , H05H7/00 , H01P5/02 , H05H5/03 , H05H5/06
CPC分类号： H01P1/182 , H01P1/067 , H01P5/02 , H01P5/082 , H05H5/03 , H05H5/06
摘要： The present disclosure relates to a phase shifter, an accelerator, and an operating method therefor. The phase shifter comprises a rotating part having a first hollow structure, the first hollow structure having a first cavity, a distance between a circumference of the cross section of the first cavity and a rotation center of the rotating part changing periodically and continuously in a peripheral direction, such that when the rotatory part rotates, a phase shift occurs between two adjacent microwave pulses at an outlet of the phase shifter. The operating method comprises transmitting a microwave pulse within the accelerator at a repetitive frequency v Hertz; the driving devices drives the rotating part to rotate at a rotation speed of n RPM, wherein n=15v*m, m is an odd number, 1, 3, 5 . . . , such that when transmitting a microwave pulse each time, the long axis of the oval cross section of the first cavity of the rotatory part is rotated to a horizontal or vertical state.

26. 发明申请

US20170187085A1 Phase shifter, Accelerator and Method of Operating The Same 有权
公开(公告)号：US20170187085A1
公开(公告)日：2017-06-29
申请号：US15281026
申请日：2016-09-29
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Jiaru Shi , Ping Wang , Chuanxiang Tang , Huaibi Chen , Yaohong Liu , Xinshui Yan , Wenhui Huang
IPC分类号： H01P1/18 , H05H5/03 , H05H5/06 , H01P5/02
CPC分类号： H01P1/182 , H01P1/067 , H01P5/02 , H01P5/082 , H05H5/03 , H05H5/06
摘要： The present disclosure relates to a phase shifter, an accelerator, and an operating method therefor. The phase shifter comprises a rotating part having a first hollow structure, the first hollow structure having a first cavity, a distance between a circumference of the cross section of the first cavity and a rotation center of the rotating part changing periodically and continuously in a peripheral direction, such that when the rotatory part rotates, a phase shift occurs between two adjacent microwave pulses at an outlet of the phase shifter. The operating method comprises transmitting a microwave pulse within the accelerator at a repetitive frequency v Hertz; the driving devices drives the rotating part to rotate at a rotation speed of n RPM, wherein n=15v*m, m is an odd number, 1, 3, 5 . . . , such that when transmitting a microwave pulse each time, the long axis of the oval cross section of the first cavity of the rotatory part is rotated to a horizontal or vertical state.

27. 发明授权

US09653251B2 X-ray apparatus and a CT device having the same 有权
公开(公告)号：US09653251B2
公开(公告)日：2017-05-16
申请号：US14490526
申请日：2014-09-18
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Chuanxiang Tang , Huaping Tang , Huaibi Chen , Wenhui Huang , Huayi Zhang , Shuxin Zheng
IPC分类号： H01J35/06 , H01J35/14 , H01J35/12 , H05G1/32 , H01J35/16
CPC分类号： H01J35/14 , H01J35/06 , H01J35/12 , H01J35/16 , H01J2235/068 , H01J2235/086 , H01J2235/087 , H05G1/32
摘要： The present application provides an external thermionic cathode distributed x-ray apparatus, including a vacuum box which is sealed at its periphery, where the interior thereof is high vacuum; a plurality of electron transmitting units arranged in a linear array and installed on the side wall of the vacuum box, where each electron transmitting unit is independent to each other; an anode installed in the center inside the vacuum box, where in the direction of length, the anode is parallel to the orientation of the electron transmitting unit, and in the direction of width, the anode has a predetermined angle with respect to the plane of the electron transmitting unit; a power supply and control system having a high voltage power supply and a focusing power supply; and a transmitting control means and a control system.

28. 发明授权

US09615438B2 CT devices and methods thereof 有权
公开(公告)号：US09615438B2
公开(公告)日：2017-04-04
申请号：US14758484
申请日：2013-11-21
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Chuanxiang Tang , Ziran Zhao , Zhe Zhang
IPC分类号： H01J35/04 , H05G1/10 , H01J35/06 , H01J35/08 , G01N23/04 , A61B6/03 , A61B6/00
CPC分类号： H05G1/10 , A61B6/032 , A61B6/40 , A61B6/4064 , G01N23/046 , G01N2223/308 , G01N2223/419 , H01J35/06 , H01J35/08 , H01J2235/086
摘要： CT devices and methods thereof are disclosed. The CT device comprises a circular electron beam emission array including a plurality of electron beam emission units that are distributed uniformly along a circle, wherein each electron beam emission unit emits electron beams that are substantially parallel to an axis of the circular electron beam emission array in sequence under the control of a control signal; a circular reflection target which is disposed to be coaxial with the circular electron beam emission array, wherein the electron beams bombard the circular reflection target to generate X-rays that intersect the axis of the circular electron beam emission array; and a circular detector array which is disposed to be coaxial with the circular reflection target and configured to include a plurality of detection units which receive the X-rays after they have passed through an object to be detected.

29. 发明授权

US09491842B2 Methods for controlling standing wave accelerator and systems thereof 有权
标题翻译：控制驻波加速器及其系统的方法
公开(公告)号：US09491842B2
公开(公告)日：2016-11-08
申请号：US14487960
申请日：2014-09-16
申请人： Nuctech Company Limited , Tsinghua University
发明人： Huaibi Chen , Jianping Cheng , Shuxin Zheng , Jiaru Shi , Chuanxiang Tang , Qingxiu Jin , Wenhui Huang , Yuzheng Lin , Dechun Tong , Shi Wang
IPC分类号： H05H9/04 , H05H7/02
CPC分类号： H05H9/04 , H05H9/048 , H05H2007/027
摘要： The present disclosure discloses a method for controlling a standing wave accelerator and a system thereof. The method comprises: generating, by an electron gun, an electron beam; injecting the electron beam into an accelerating tube; and controlling a microwave power source to generate and input microwave with different frequencies into the accelerating tube, so that the accelerating tube switches between different resonant modes at a predetermined frequency to generate electron beams with corresponding energy. According to the above solution, it only needs to change the output frequency of the microwave power source in the process of adjusting energy, without making any change to the accelerating structure per se. Therefore, the method is easy to operate. In addition, the structure of the accelerating tube in the above system is simple, without adding a particular regulation apparatus.
摘要翻译：本公开公开了一种用于控制驻波加速器及其系统的方法。该方法包括：通过电子枪产生电子束; 将电子束注入加速管中; 并且控制微波功率源以将不同频率的微波产生并输入到加速管中，使得加速管以预定频率在不同谐振模之间切换以产生具有相应能量的电子束。根据上述方案，只需要在调节能量的过程中改变微波功率源的输出频率，而不会对加速结构本身造成任何变化。因此，该方法易于操作。此外，上述系统中的加速管的结构简单，而不添加特定的调节装置。

30. 发明申请

US20140185776A1 APPARATUSES AND METHODS FOR GENERATING DISTRIBUTED X-RAYS 有权
标题翻译：用于产生分布式X射线的装置和方法
公开(公告)号：US20140185776A1
公开(公告)日：2014-07-03
申请号：US14136362
申请日：2013-12-20
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Yuanjing Li , Yaohong Liu , Jinsheng Liu , Huaping Tang , Chuanxiang Tang , Huaibi Chen , Xinshui Yan
IPC分类号： H01J35/14
CPC分类号： H01J35/14 , H01J35/16 , H01J35/30 , H01J2235/16
摘要： An apparatus and method to generate distributed x-rays. A hot cathode of an electron gun is used in vacuum to generate electron beams having certain initial movement energy and speed. Periodic scanning is performed with the initial low-energy electron beams, which are thus caused to be reciprocally deflected. A current-limiting device is provided in the travel path of the electron beams along the direction of the reciprocal deflection. Through holes arranged in an array on the current-limiting device, only part of the electron beams targeting specific positions can pass to form sequential electron beam currents distributed in an array. These electron beam currents are accelerated by a high-voltage electric field to obtain high energy, bombard an anode target, and thus sequentially generate corresponding focus spots and x-rays distributed in an array at the anode target.
摘要翻译：一种生成分布式X射线的装置和方法。真空中使用电子枪的热阴极来产生具有一定的初始移动能量和速度的电子束。用初始低能电子束进行周期性扫描，从而使其相互偏转。电流限制装置沿着往复偏转的方向设置在电子束的行进路径中。通过排列在限流装置上的阵列中的通孔，只有部分针对特定位置的电子束可以通过以形成分布在阵列中的顺序电子束电流。这些电子束电流通过高电压电场加速以获得高能量，轰击阳极靶，从而顺序地产生在阳极靶上分布在阵列中的相应聚焦点和x射线。

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