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1. 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).

2. 发明授权

US09655220B2 CT devices and methods thereof 有权
公开(公告)号：US09655220B2
公开(公告)日：2017-05-16
申请号：US14758779
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 , H05G1/32 , H05G1/10 , H05H7/18 , G01N23/04 , A61B6/03 , H01J35/08 , H05G2/00
CPC分类号： H05G1/32 , A61B6/032 , A61B6/4028 , A61B6/4275 , G01N23/046 , G01N2223/419 , H01J35/08 , H01J2235/087 , H05G1/10 , H05G2/00 , H05H7/18
摘要： CT devices and methods thereof are disclosed. The CT device comprises a circular electron gun array including a plurality of electron guns, each of the electron guns is configured to emit electron beams along the radial direction of the circular electron gun array in sequence according to a predetermine pulse sequence; an acceleration cavity disposed inside of a circle on which the circular electron gun array is positioned, including a plurality of nested concentric coaxial cavities that operate in π mode for accelerating electron beams emitted from the respective electron guns of the circular electron gun array; a circular transmission target disposed inside of a circle on which the acceleration cavity is positioned and being bombarded by the accelerated electron beams to generate X-rays; and a circular detector configured to receive the X-rays after they have passed through an object to be detected.

3. 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。

4. 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.

5. 发明授权

US09426877B2 Standing wave electron linear accelerator with continuously adjustable energy 有权
标题翻译：驻波电子线性加速器具有连续可调的能量
公开(公告)号：US09426877B2
公开(公告)日：2016-08-23
申请号：US14137262
申请日：2013-12-20
申请人： Tsinghua University , Nuctech Company Limited
发明人： Chuanxiang Tang , Zhe Zhang , Qingxiu Jin , Jiaru Shi , Huaibi Chen , Wenhui Huang , Shuxin Zheng , Yaohong Liu
IPC分类号： H05H9/04 , H05G2/00 , H05H7/12 , H05H7/22 , H05G1/32
CPC分类号： H05H9/04 , H05G1/32 , H05G2/00 , H05H7/12 , H05H7/22 , H05H9/048
摘要： A standing wave electron linear accelerating apparatus and a method thereof are disclosed. The apparatus comprises an electron gun configured to generate electron beams; a pulse power source configured to provide a primary pulse power signal; a power divider coupled downstream from the pulse power source and configured to divide the primary pulse power signal outputted from the pulse power source into a first pulse power signal and a second pulse power signal; a first accelerating tube configured to accelerating the electron beams with the first pulse power signal; a second accelerating tube configured to accelerate the electron beams with the second pulse power signal; a phase shifter configured to continuously adjust a phase difference between the first pulse power signal and the second pulse power signal so as to generate accelerated electron beams with continuously adjustable energy at output of the second accelerating tube.
摘要翻译：公开了一种驻波电子线性加速装置及其方法。该装置包括配置成产生电子束的电子枪; 脉冲电源，被配置为提供初级脉冲功率信号; 耦合到所述脉冲电源的下游并被配置为将从所述脉冲电源输出的所述主脉冲功率信号划分为第一脉冲功率信号和第二脉冲功率信号的功率分配器; 第一加速管，被配置为用第一脉冲功率信号加速电子束; 第二加速管，被配置为用所述第二脉冲功率信号加速所述电子束; 移相器，被配置为连续地调节第一脉冲功率信号和第二脉冲功率信号之间的相位差，以便在第二加速管的输出处产生具有连续可调能量的加速电子束。

6. 发明申请

US20150342014A1 CT DEVICES AND METHODS THEREOF 有权
标题翻译： CT装置及其方法
公开(公告)号：US20150342014A1
公开(公告)日：2015-11-26
申请号：US14758779
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： H05G1/32 , G01N23/04 , A61B6/03 , H05G1/10
CPC分类号： H05G1/32 , A61B6/032 , A61B6/4028 , A61B6/4275 , G01N23/046 , G01N2223/419 , H01J35/08 , H01J2235/087 , H05G1/10 , H05G2/00 , H05H7/18
摘要： CT devices and methods thereof are disclosed. The CT device comprises a circular electron gun array including a plurality of electron guns, each of the electron guns is configured to emit electron beams along the radial direction of the circular electron gun array in sequence according to a predetermine pulse sequence; an acceleration cavity disposed inside of a circle on which the circular electron gun array is positioned, including a plurality of nested concentric coaxial cavities that operate in π mode for accelerating electron beams emitted from the respective electron guns of the circular electron gun array; a circular transmission target disposed inside of a circle on which the acceleration cavity is positioned and being bombarded by the accelerated electron beams to generate X-rays; and a circular detector configured to 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。该CT设备包括圆形电子枪阵列，其包括多个电子枪，每个电子枪被配置为根据的预定脉冲序列，以发射电子束沿在序列中的圆形的电子枪阵列的径向方向上; 设置在其上定位有圆形电子枪阵列的圆的内部的加速腔，包括多个嵌套的同心同轴腔，其在“ 用于加速从圆形电子枪阵列的各个电子枪发射的电子束的模式; 设置在加速腔位于其上并被加速电子束轰击以产生X射线的圆内的圆形透射目标; 以及圆形检测器，被配置为在它们通过待检测物体之后接收X射线。

7. 发明申请

US20150340192A1 CT DEVICES AND METHODS THEREOF 有权
标题翻译： CT装置及其方法
公开(公告)号：US20150340192A1
公开(公告)日：2015-11-26
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： H01J35/14 , G01N23/04 , A61B6/03 , H05G1/10
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).
摘要翻译： CT公开了其装置及其方法。 CT装置包括电子束产生单元，圆形反射目标（9）和圆形检测器阵列。电子束生成单元包括电子枪（7），偏转扫描单元和限制器（16），其中电子枪（7）产生电子束，偏转扫描单元偏转电子束，偏转方向随时间变化以实现圆形扫描，并且限制器（16）具有多个圆形分布的孔，并且其中当电子束沿着圆形分布的孔扫描时，输出循环分布的多个电子束。圆形反射目标（9）设置成与圆形分布的电子束同轴，其中圆形分布的电子束轰击圆形反射目标（9）以产生与圆形分布的电子束的轴线相交的X射线。圆形检测器阵列（11）设置成与圆形反射目标同轴，并且包括多个检测单元，它们在通过待检测物体（10）之后接收X射线。

8. 发明授权

US10302726B2 Image reconstruction for MRI using multiplexed sensitivity encoding 有权
公开(公告)号：US10302726B2
公开(公告)日：2019-05-28
申请号：US15322502
申请日：2015-07-01
申请人： KONINKLIJKE PHILIPS N.V. , TSINGHUA UNIVERSITY
发明人： Feng Huang , Hua Guo , Zhe Zhang , Bi Da Bd Zhang
IPC分类号： G01V3/00 , G01R33/561 , G01R33/563 , G01R33/565
摘要： This invention provides an image processing method and apparatus for reconstructing an image of a site of a subject. The image processing method comprises: generating a first estimated phase of each shot of multiple shots of the site by sensitivity encoding based on shot data of the corresponding shot obtained for the site; reconstructing a first multiplexed sensitivity encoded image based on the first estimated phase of each shot and shot data of each shot; generating a second estimated phase of each shot of the multiple shots by regularized sensitivity encoding using the first multiplexed sensitivity encoded image; and reconstructing a second multiplexed sensitivity encoded image based on the second estimated phase of each shot and shot data of each shot. In this way, the quality of the finally reconstructed image in magnetic resonance imaging is further improved.

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