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1. 发明授权

US11456146B2 Anode target, ray light source, computed tomography device, and imaging method 有权
公开(公告)号：US11456146B2
公开(公告)日：2022-09-27
申请号：US16627531
申请日：2018-09-13
申请人： Nuctech Company Limited , TSINGHUA UNIVERSITY
发明人： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
IPC分类号： H01J35/14 , H01J35/06 , H01J35/12 , H01J35/16 , A61B6/03
摘要： An anode target, a ray light source, a computed tomography device, and an imaging method, which relate to the technical field of ray processing. The anode target comprises a first anode target, a second anode target, and a ceramic plate. The first anode target is used for enabling, by means of a first voltage carried on the first anode target, an electron beam emitted by a cathode to generate a first ray on a target spot of the first anode target. The second anode target is used for enabling, by means of a second voltage carried on the second anode target, an electron beam emitted by the cathode to generate a second tray on a target spot of the second anode. The ceramic plate is used for isolating the first anode target from the second anode target. By means of the anode target, the ray light source, the computed tomography device and the imaging method, dual-energy distributed ray imaging data can be provided and the imaging quality of a ray system can be improved.

2. 发明授权

US11330695B2 Arrayed X-ray source and X-ray imaging apparatus 有权
公开(公告)号：US11330695B2
公开(公告)日：2022-05-10
申请号：US16931261
申请日：2020-07-16
申请人： Tsinghua University , Nuctech Company Limited
发明人： Chengjun Tan , Wenhui Huang , Qingxiu Jin , Chuanxiang Tang , Donghai Liu , Qun Luo , Peidong Wu , Cheng Song , Yunze Ding , Cong Xu , Luming Zhang , Shuo Wang
IPC分类号： H05G1/04 , H01J35/18 , H05G1/02 , G01N23/04 , H01J35/14
摘要： An arrayed X-ray source and an X-ray imaging apparatus are described. An example X-ray source includes a housing and X-ray generators located in the housing. The X-ray generators are arranged in an array. The X-ray generators are provided separately from each other and configured to emit X-rays independently of each other.

3. 发明授权

US11315750B2 Anode target, ray light source, computed tomography scanning device, and imaging method 有权
公开(公告)号：US11315750B2
公开(公告)日：2022-04-26
申请号：US16627527
申请日：2018-06-01
申请人： Nuctech Company Limited , TSINGHUA UNIVERSITY
发明人： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
IPC分类号： H01J5/14 , H01J35/14 , H01J35/06 , H01J35/12 , H01J35/16 , A61B6/03
摘要： An anode target comprises: a plurality of target structures, used for receiving an electron beam emitted by a cathode to generate a ray, the plurality of target structures being of three-dimensional structures having bevels; a copper cooling body, used for bearing the target structures and comprising an oxygen-free copper cooling body; a cooling oil tube, used for cooling the anode target; and a shielding layer, used for achieving a shielding effect and comprising a tungsten shielding layer. The anode target, the ray light source, the computed tomography scanning device, and the imaging method in the present application are able to enable all target spots on the anode target to be distributed on a straight line, imaging quality of a ray system is improved, and complexity of an imaging system is reduced.

4. 发明授权

US11201030B2 Distributed X-ray light source and control method therefor, and CT equipment 有权
公开(公告)号：US11201030B2
公开(公告)日：2021-12-14
申请号：US16627515
申请日：2018-05-29
申请人： Nuctech Company Limited , TSINGHUA UNIVERSITY
发明人： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
IPC分类号： H01J35/14 , G01N23/046 , A61B6/03 , H01J35/04 , A61B6/00 , H05G1/52 , H05G1/32
摘要： A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.

5. 发明申请

US20150085989A1 APPARATUS AND A METHOD FOR GENERATING A FLATTENING X-RAY RADIATION FIELD 有权
标题翻译：装置和产生平滑X射线辐射场的方法
公开(公告)号：US20150085989A1
公开(公告)日：2015-03-26
申请号：US14494178
申请日：2014-09-23
申请人： NUCTECH COMPANY LIMITED , Tsinghua University
发明人： Kejun Kang , Chuanxiang Tang , Huaping Tang , Huaibi Chen , Wenhui Huang
IPC分类号： H01J35/14 , H01J35/10
CPC分类号： H01J35/14 , A61N5/1077 , H01J35/06 , H01J35/106 , H01J2235/068 , H01J2235/086 , H01J2235/1262 , H05H7/06
摘要： An apparatus and a method are for generating a flattening x-ray radiation field. The apparatus includes: plurality of electron accelerators for generating high-energy electron beam current; and a common target unit including a vacuum target chamber, a target and plurality of input connectors. The plurality of input connectors are connected to one side of the vacuum target chamber and the target is installed at the other side of the vacuum target chamber opposing the plurality of input connectors, the axes of which intersect in pairs at one point in an predetermined included angle. The plurality of electron accelerators are connected to the plurality of input connectors.
摘要翻译：一种用于产生平坦的x射线辐射场的装置和方法。该装置包括：多个用于产生高能电子束电流的电子加速器; 以及包括真空靶室，靶和多个输入连接器的公共目标单元。多个输入连接器连接到真空靶室的一侧，并且目标件安装在真空靶室的与多个输入连接器相对的另一侧，多个输入连接器的轴线在预定的包括的一个点处成对地相交角度。多个电子加速器连接到多个输入连接器。

6. 发明授权

US10748731B2 Electron gun and X-ray source and CT device having the electron gun 有权
公开(公告)号：US10748731B2
公开(公告)日：2020-08-18
申请号：US15856251
申请日：2017-12-28
申请人： TSINGHUA UNIVERSITY , Nuctech Company Limited
发明人： Wenhui Huang , Dongsheng Zhang , Qingxiu Jin , Chengjun Tan , Donghai Liu , Qun Luo , Chuanxiang Tang
IPC分类号： H01J3/02 , H01J35/06 , H01J35/14
摘要： An electron gun, an X-ray source and a CT device are provided. The electron gun includes a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion; an internal cavity is formed in the body and has an opening positioned on the second end portion; a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion.

7. 发明申请

US20170299762A1 SCAN METHOD, SCAN SYSTEM AND RADIATION SCAN CONTROLLER 审中-公开
公开(公告)号：US20170299762A1
公开(公告)日：2017-10-19
申请号：US15289206
申请日：2016-10-10
申请人： NUCTECH COMPANY LIMITED , Tsinghua University
发明人： Kejun Kang , Yaohong Liu , Ziran Zhao , Wei Jia , Jianping Gu , Chuanxiang Tang , Huaibi Chen , Jianjun Gao , Wei Yin , Xiying Liu
IPC分类号： G01V5/00 , G01N23/04
CPC分类号： G01V5/0016 , G01N23/04 , G01T1/29
摘要： This invention provides a scan method, scan system and radiation scan controller, and relates to the field of radiation. Wherein, the scan method of this invention comprises: obtaining detection data of an object to be inspected under radiation scanning using a detector; adjusting an accelerator output beam dose rate and/or an output electron beam energy level of a radiation emission device according to the detection data. With this method, working conditions of the accelerator of the radiation emission device may be adjusted according to the detection data detected by the detector, so that for a region having a larger mass thickness, a higher output beam dose rate or a higher electron beam output energy level is adopted to guarantee satisfied imaging technical indexes, for a region having a smaller mass thickness, a lower output beam dose rate or a lower electron beam output energy level is adopted to reduce the environmental dose level while guaranteeing satisfied imaging technical indexes.

8. 发明授权

US09620325B2 CT devices and methods thereof 有权
公开(公告)号：US09620325B2
公开(公告)日：2017-04-11
申请号：US14758768
申请日：2013-10-31
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Kejun Kang , Chuanxiang Tang , Ziran Zhao , Zhe Zhang
IPC分类号： A61B6/00 , H01J35/14 , H05G1/10 , G01N23/04 , A61B6/03
CPC分类号： H01J35/14 , A61B6/032 , A61B6/4028 , A61B6/4275 , F04C2270/041 , G01N23/046 , G01N2223/419 , H05G1/10
摘要： CT Devices and methods thereof are disclosed. The CT device comprises an electron beam generation unit, a circular reflection target (9) and a circular detector array. The electron beam generation unit comprises an electron gun (7), a deflection scanning unit and a restrictor (16), wherein the electron gun (7) generates electron beams, the deflection scanning unit deflects the electron beams with a deflection direction varying as time so as to implement a circular scanning, and the restrictor (16) has a plurality of circularly distributed holes, and wherein when the electron beams scan along the circularly distributed holes, a plurality of electron beams that are distributed circularly are output. The circular reflection target (9) is disposed to be coaxial with the circularly distributed electron beams, wherein the circularly distributed electron beams bombard the circular reflection target (9) to generate X-rays that intersect the axis of the circularly distributed electron beams. The circular detector array (11) is disposed to be coaxial with the circular reflection target and includes a plurality of detection units which receive the X-rays after they have passed through an object to be detected (10).

9. 发明申请

US20140077619A1 APPARATUS AND METHOD FOR VOLTAGE ALTERNATING PULSE OUTPUT 有权
标题翻译：电压交替脉冲输出的装置和方法
公开(公告)号：US20140077619A1
公开(公告)日：2014-03-20
申请号：US14116074
申请日：2012-12-28
申请人： Tsinghua University , Nuctech Company Limited
发明人： Yaohong Liu , Chuanxiang Tang , Xinshui Yan , Wei Jia , Jianjun Gao , Jinsheng Liu , Wei Yin , Xiying Liu , Hao Shi
IPC分类号： H03K3/57
CPC分类号： H03K3/57 , H02M1/088 , H02M2003/077 , H03K3/64
摘要： The present invention provides a high voltage pulse modulating power source based on alternate group triggering, which comprises: a DC stabilized voltage source for supplying power to the high voltage pulse modulating power source; a plurality of solid-state switches; a plurality of triggers corresponding to said plurality of solid-state switches, wherein each trigger provides a trigger signal to its corresponding solid-state switch to turn on said corresponding solid-state switch, wherein said plurality of triggers are divided into at least two groups of triggers; a time sequence control module, which, at time t1, controls said plurality of triggers to generate trigger signals so as to turn on said plurality of solid-state switches simultaneously, and at time t2, controls one group of said at least two groups of triggers to generate trigger signals to turn on solid-state switches corresponding to this group of triggers, wherein time t1 and time t2 appear alternately.
摘要翻译：本发明提供一种基于交替组触发的高电压脉冲调制电源，包括：用于向高电压脉冲调制电源供电的直流稳压电压源; 多个固态开关; 与所述多个固态开关相对应的多个触发器，其中每个触发器向其对应的固态开关提供触发信号以打开所述对应的固态开关，其中所述多个触发器被分成至少两个组的触发器时间控制模块，其在时间t1控制所述多个触发器以产生触发信号，以同时接通所述多个固态开关，并且在时间t2，控制一组所述至少两组触发器产生触发信号以打开与该组触发相对应的固态开关，其中时间t1和时间t2交替出现。

10. 发明授权

US11170966B2 Distributed X-ray light source and control method therefor, and CT equipment 有权
公开(公告)号：US11170966B2
公开(公告)日：2021-11-09
申请号：US16627515
申请日：2018-05-29
申请人： Nuctech Company Limited , TSINGHUA UNIVERSITY
发明人： Chengjun Tan , Wenhui Huang , Chuanxiang Tang , Qingxiu Jin , Dongsheng Zhang , Qun Luo , Donghai Liu , Luming Zhang , Peidong Wu
IPC分类号： H01J35/14 , G01N23/046 , A61B6/03 , H01J35/04 , A61B6/00 , H05G1/52 , H05G1/32
摘要： A distributed X-ray light source comprises: a plurality of arranged cathode assemblies used for emitting electron beams; an anode target used for receiving the electron beams emitted by the cathode assemblies; and compensation electrodes and focusing electrodes provided in sequence between the plurality of the cathode assemblies and the anode target, the compensation electrode being used for adjusting electric field strength at two ends of a grid structure in each cathode assembly, and the focusing electrode being used for focusing the electron beams emitted by the cathode assemblies, wherein the focusing electrode corresponding to at least one cathode assembly in the plurality of the cathode assemblies comprises a first electrode and a second electrode which are separately provided, and an electron beam channel is formed between the first electrode and the second electrode.

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