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201 条记录 (耗时 0.037 秒)

    SCAN METHOD, SCAN SYSTEM AND RADIATION SCAN CONTROLLER
    35.
    发明申请
    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.

    X-ray generator with adjustable collimation
    36.
    发明授权
    X-ray generator with adjustable collimation 有权

    公开(公告)号：US09779908B2

    公开(公告)日：2017-10-03

    申请号：US14729622

    申请日：2015-06-03

    申请人： Nuctech Company Limited ,  Tsinghua University

    发明人： Fuhua Ding ,  Zhiqiang Chen ,  Ziran Zhao ,  Wanlong Wu ,  Le Tang ,  Yingkang Jin ,  Yanjie Wen

    IPC分类号： H01J35/10 ,  H01J35/12 ,  G21K1/04 ,  H05G1/12

    CPC分类号： H01J35/12 ,  G21K1/043 ,  G21K1/046 ,  H01J2235/1287 ,  H05G1/12

    摘要： The present disclosure provides an X-ray generator with adjustable collimation. The X-ray generator comprises: an assembly of X-ray source, which includes an X-ray tube having a cathode and an anode and a front collimator; a high voltage generator, which is disposed in an extended chamber of a housing for the X-ray tube and which is used for supplying a direct current high voltage between the cathode and the anode of the X-ray tube to excite X-ray beams; a collimation adjustment unit, which is rotatably disposed outside of the front collimator and which is used for adjusting fan-type X-ray beams into continuous pencil-type X-ray beams; and a cooling unit, which is independently mounted to the X-ray tube and which is used for cooling the anode of the X-ray tube; wherein, the assembly of X-ray source, the high voltage generator, the collimation adjustment unit and the cooling unit are integrated as a whole. The X-ray generator with adjustable collimation according to the disclosure has a compact construction, which is helpful in miniaturization, modularization and high efficiency of a security detection equipment.

    CT devices and methods thereof
    37.
    发明授权
    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).

    APPARATUS AND METHOD FOR RAY SCANNING IMAGING
    40.
    发明申请
    APPARATUS AND METHOD FOR RAY SCANNING IMAGING 有权
    用于扫描成像的装置和方法

    公开(公告)号：US20140211917A1

    公开(公告)日：2014-07-31

    申请号：US14129655

    申请日：2012-12-31

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Yuxiang Xing ,  Jia Hao ,  Liang Li

    IPC分类号： G01V5/00

    CPC分类号： G01V5/0016 ,  A61B6/032 ,  A61B6/4007 ,  A61B6/4014 ,  A61B6/4078 ,  A61B6/4233 ,  A61B6/4275 ,  G01N23/046 ,  G01T1/2985 ,  G01V5/005

    摘要： The present invention discloses apparatus and method for ray scanning imaging. The apparatus comprises a plurality of ray generators and a ray detection device. The plurality of ray generators are arranged uniformly along a circular arc and emit ray beams in sequence or simultaneously to an object to be inspected within a single scanning period. The ray detection device may be either in a multi-segmental semi-closed configuration composed of a plurality of linear arrays of ray detectors or in a circular arc configuration where a plurality of ray detection units arranged uniformly along a circular arc. During the inspection, the apparatus is advantageous in obtaining the complete ray projection values without rotation thereof, so as to effectively shorten the inspection time.

    摘要翻译： 本发明公开了一种用于射线扫描成像的装置和方法。 该装置包括多个射线发生器和射线检测装置。 多个射线发生器沿着圆弧均匀地布置，并且在单个扫描周期内依次发射射线束或同时发射到被检查物体。 射线检测装置可以是由多个线状阵列的射线检测器组成的多段半封闭构造，也可以是多个沿着圆弧均匀排列的射线检测单元的圆弧结构。 在检查期间，该装置有利于获得完整的射线投影值而不旋转，以便有效地缩短检查时间。