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1. 发明公开

US20240369499A1 RAY SCANNING APPARATUS 审中-公开
公开(公告)号：US20240369499A1
公开(公告)日：2024-11-07
申请号：US18575789
申请日：2022-07-01
申请人： Nuctech Company Limited , Tsinghua University
发明人： Zhiqiang CHEN , Li ZHANG , Qingping HUANG , Xin JIN , Hui DING , Yong ZHOU , Baoyauan HU , Zhenhua ZHAO
IPC分类号： G01N23/04 , G01N23/06
CPC分类号： G01N23/04 , G01N23/06 , G01N2223/20 , G01N2223/3307 , G01N2223/401 , G01N2223/501 , G01N2223/643
摘要： A ray scanning apparatus, including: a conveying device for conveying an object under inspection to pass through a scanning area; a ray source assembly including a plurality of ray source modules arranged around the scanning area on an upper side of the conveying device and fixed in a plane perpendicular to a conveying direction of the object under inspection; and a detector assembly including a plurality of detector sets fixed in a plane perpendicular to the conveying direction of the object under inspection; the detector assembly is located between the ray source assembly and the scanning area in a direction perpendicular to the conveying direction of the object under inspection, the ray source assembly and the detector assembly are arranged to overlap at least partially in the conveying direction of the object under inspection, and the plurality of ray source modules are mounted and detached independently of each other.

2. 发明公开

US20240361487A1 RADIATION PROTECTION ARRANGEMENT AND SECURITY INSPECTION DEVICE 审中-公开
公开(公告)号：US20240361487A1
公开(公告)日：2024-10-31
申请号：US18690097
申请日：2022-07-22
申请人： NUCTECH COMPANY LIMITED , TSINGHUA UNIVERSITY
发明人： Li ZHANG , Yunda SUN , Xin JIN , Wuyang LIANG , Ming CHANG , Le SHEN
IPC分类号： G01V5/22
CPC分类号： G01V5/22
摘要： A radiation protection arrangement, including: a housing, the housing including a first port and a second port; and a tray, the tray having an accommodation space. The tray is allowed to pass through a channel within the housing. The tray has a first end wall, a second end wall, and a bottom portion connected between the first end wall and the second end wall. A shape of the first end wall and/or a shape of the second end wall are/is configured to fit with an inner wall of the housing, so as to block a radiation from leaving the channel from the accommodation space through the second port or the first port. Further provided is a security inspection device, including the radiation protection arrangement.

3. 发明公开

US20240288385A1 RAY SCANNING APPARATUS AND RAY SCANNING SYSTEM 审中-公开
公开(公告)号：US20240288385A1
公开(公告)日：2024-08-29
申请号：US18575224
申请日：2022-07-07
申请人： Nuctech Company Limited , Tsinghua University
发明人： Li ZHANG , Zhiqiang CHEN , Qingping HUANG , Xin JIN , Hui DING , Yong ZHOU , Bintao WEI , Zhenhua ZHAO
IPC分类号： G01N23/04
CPC分类号： G01N23/04 , G01N2223/20 , G01N2223/308 , G01N2223/321
摘要： A ray scanning apparatus for a luggage conveying system. The apparatus includes: a conveying device for conveying an object under inspection to pass through a scanning area of the ray scanning apparatus; and a plurality of scanning beam planes disposed on a plurality of scanning planes arranging in a conveying direction of the object under inspection, each scanning beam plane includes a ray source module and a detector assembly which are arranged opposite to each other, and the ray source module includes a plurality of ray source points for emitting ray beams, wherein the ray source modules of the plurality of scanning beam planes are arranged on lower, left, and right sides of the scanning area respectively.

4. 发明公开

US20240248048A1 RAY SCANNING APPARATUS 审中-公开
公开(公告)号：US20240248048A1
公开(公告)日：2024-07-25
申请号：US18575794
申请日：2022-07-07
申请人： Nuctech Company Limited , Tsinghua University
发明人： Zhiqiang CHEN , Li ZHANG , Qingping HUANG , Yong ZHOU , Zhenhua ZHAO , Hui DING , Xin JIN , Chao JI
IPC分类号： G01N23/046
CPC分类号： G01N23/046 , G01N2223/308 , G01N2223/3305 , G01N2223/3308 , G01N2223/401 , G01N2223/419 , G01N2223/5015
摘要： A ray scanning apparatus, including: a conveying device; a ray source assembly including a plurality of ray source modules arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area; and a detector assembly including a plurality of detector sets arranged around the scanning area in a non-enclosed structure opened on one side of the scanning area, where the opening of the non-enclosed structure of the ray source assembly is opposite to the opening of the non-enclosed structure of the detector assembly, the plurality of detector sets are fixed in a same plane perpendicular to the conveying direction of the object under inspection, and the plurality of ray source modules of the ray source assembly are arranged in a plurality of different planes perpendicular to the conveying direction of the object under inspection.

5. 发明申请

US20150378047A1 DETECTOR DEVICE, DUAL ENERGY CT SYSTEM AND DETECTION METHOD USING THE SYSTEM 有权
标题翻译：检测器装置，双能量CT系统和使用该系统的检测方法
公开(公告)号：US20150378047A1
公开(公告)日：2015-12-31
申请号：US14748407
申请日：2015-06-24
申请人： Tsinghua University , Nuctech Company Limited
发明人： Zhiqiang CHEN , Li ZHANG , Xin JIN , Qingping HUANG , Le SHEN , Yunda SUN
IPC分类号： G01V5/00 , G01T7/08
CPC分类号： G01V5/0041 , A61B6/4266 , G01T1/202 , G01T1/362 , G01T7/08 , G01V5/005
摘要： The present disclosure discloses a detector device comprising a plurality of detector assemblies. Each detector assembly comprises at least one detection crystal units having a first energy response and those having a second energy response, which are both arranged along a first direction at intervals, each detection crystal unit having a first/second energy response including at least one detection crystals having a first/second energy response arranged along a second direction. The at least one detection crystal units having a first energy response and the at least one detection crystal units having a second energy response are, at least partially, alternatively arranged along the first direction when viewed from an incidence direction of the X-ray. The present disclosure also discloses a dual energy CT system having the detector device and a CT detection method using this system.
摘要翻译：本公开公开了一种包括多个检测器组件的检测器装置。每个检测器组件包括具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的检测晶体单元，它们都沿着第一方向间隔排列，每个检测晶体单元具有包括至少一个检测的第一/第二能量响应具有沿第二方向布置的第一/第二能量响应的晶体。当从X射线的入射方向观察时，具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的至少一个检测晶体单元至少部分地沿第一方向布置。本公开还公开了一种具有检测器装置和使用该系统的CT检测方法的双能CT系统。

6. 发明公开

US20230144259A1 METHOD AND DEVICE FOR CONTROLLING OUTPUT BEAM OF RAY MACHINE IN IMAGING SYSTEM, AND CT IMAGING SYSTEM 审中-公开
公开(公告)号：US20230144259A1
公开(公告)日：2023-05-11
申请号：US18052671
申请日：2022-11-04
申请人： Nuctech Company Limited , Tsinghua University
发明人： Zhiqiang CHEN , Li ZHANG , Yunda SUN , Zhenhua ZHAO , Xin JIN , Le SHEN , Wuyang LIANG
IPC分类号： G01N23/046 , G06T11/00 , G01N23/083
CPC分类号： G01N23/046 , G06T11/005 , G01N23/083 , G01N2223/643 , G01N2223/04 , G01N2223/419
摘要： The method includes: receiving an encoder signal and a ray machine output beam signal, and initially synchronizing the encoder signal and the ray machine output beam signal; recording coded value M of the encoder at moment tm, and coded value N of the encoder at moment tm+1, where M, N, and m are integers; determining that duration from the moment tm to the moment tm+1 is an actual output beam time interval T of the ray machine, when it is determined that a difference value between the coded value M and the coded value N satisfies preset value a, a being an integer; determining gap time TG in the actual output beam time interval T based on a preset output beam time interval TJ of the imaging system and the actual output beam time interval T; and controlling the ray machine not to emit beam within the gap time TG.

7. 发明申请

US20170227476A1 X-RAY PHASE-CONTRAST IMAGING SYSTEM AND IMAGING METHOD 审中-公开
公开(公告)号：US20170227476A1
公开(公告)日：2017-08-10
申请号：US15328437
申请日：2015-11-02
申请人： Tsinghua University , Nuctech Company Limited
发明人： Li Zhang , Zhiqiang CHEN , Xiaolei JIANG , Xiaohua ZHU , Xin JIN
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , G01N23/04 , G01N2223/3306 , G01N2223/401 , G01N2223/408 , G21K2207/005
摘要： The present disclosure relates to X-ray imaging systems and methods. An exemplary system may comprise a distributed X-ray source arrangement, a fixed grating module, an X-ray detecting device, and a computer workstation. In one illustrative implementation, X-ray sources of the distributed incoherent X-ray source arrangement may sequentially generate and emit X-rays to an object to be detected. Further, for each exposure, the X-ray detecting device may receive the X-rays, wherein after a series of stepping exposures and corresponding data acquisitions, at each pixel of the X-ray detecting device, X-ray intensities are represented as an intensity curve; the intensity curve may be compared to an intensity curve in the absence of the object to be detected, and a pixel value at each pixel may be obtained from a variation of the intensity curves; and image information of the object to be detected may be obtained according to such pixel values.

8. 发明申请

US20170176353A1 MULTI-MODALITY DETECTION SYSTEM AND METHOD 审中-公开
公开(公告)号：US20170176353A1
公开(公告)日：2017-06-22
申请号：US15263207
申请日：2016-09-12
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Zhiqiang CHEN , Li ZHANG , Tianyi YANG DAI , Qingping HUANG , Yunda SUN , Xin JIN
IPC分类号： G01N23/04 , G01N23/207 , G21K1/02 , G01N23/083
CPC分类号： G01N23/046 , G01N23/083 , G01N23/20083 , G01N23/207 , G01N2223/056 , G01N2223/316 , G01N2223/419 , G01N2223/643 , G01V5/005 , G21K1/02
摘要： The present disclosure relates to multi-modality detection systems and methods. One illustrative multi-modality detection system may include a distributed radiation source configured to irradiate an object under detection, a primary collimator configured to separate rays of the distributed radiation source into two parts, wherein one part is for CT detection and the other part is for XRD detection, a CT detection device configured to perform a CT detection to acquire a CT image of the object under detection, and an XRD detection device configured to perform an XRD detection to acquire an XRD image of the object under detection, wherein the CT detection and the XRD detection are performed simultaneously.

9. 发明申请

US20150379745A1 CT IMAGE CALIBRATION METHOD AND DEVICE AND CT SYSTEM 有权
标题翻译： CT图像校准方法与装置与CT系统
公开(公告)号：US20150379745A1
公开(公告)日：2015-12-31
申请号：US14751044
申请日：2015-06-25
申请人： TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
发明人： Li ZHANG , Xin JIN , Qingping HUANG , Yunda SUN
IPC分类号： G06T11/00 , G01N23/04 , G01V5/00
CPC分类号： G06T11/003 , A61B6/032 , A61B6/5205 , A61B6/583 , G01N23/046 , G01V5/0041 , G01V5/005 , G06T2207/10081
摘要： The present invention provides a CT image calibration method and device and a CT system. The method includes: arranging a fixed calibration element at the outside of a channel area and within the maximal reconstruction area of a CT scanning device, and storing the theoretical value of the fixed calibration element; collecting the projection data of the fixed calibration element to obtain the actual reconstructed image of the fixed calibration element; and comparing the actual reconstructed image with the stored corresponding theoretical value, to establish a mapping function for correcting the actual reconstructed image into the theoretical value. By adopting the present invention, the calibration quality can be effectively improved, the image calibration effect is enhanced, the reliability of the CT scanning device is improved and the maintenance cost is saved, thus the practical application value is very high.
摘要翻译：本发明提供一种CT图像校准方法和装置以及CT系统。该方法包括：在CT扫描装置的通道区域的外侧和最大重建区域内设置固定校准元件，并存储固定校准元件的理论值; 收集固定校准元件的投影数据，以获得固定校准元件的实际重建图像; 并将实际重构图像与存储的对应理论值进行比较，以建立用于将实际重建图像校正为理论值的映射函数。通过采用本发明，可以有效地提高校准质量，提高图像校正效果，提高CT扫描装置的可靠性，节省维护成本，实际应用价值非常高。

10. 发明申请

US20150185355A1 CT SYSTEMS AND METHODS THEREOF 有权
标题翻译： CT系统及其方法
公开(公告)号：US20150185355A1
公开(公告)日：2015-07-02
申请号：US14576737
申请日：2014-12-19
申请人： Tsinghua University , Nuctech Company Limited
发明人： Li ZHANG , Zhiqiang CHEN , Qingping HUANG , Xin JIN , Yunda SUN , Le SHEN , Ji ZHAO
IPC分类号： G01V5/00 , G01T7/08 , G01N23/04 , G06T11/00
CPC分类号： G01V5/005 , G01N23/046 , G01T7/08 , G06T11/003 , G06T2207/10072 , G06T2211/40
摘要： A CT system and method thereof are discloses. The system includes: a conveyor mechanism; a first scanning stage configured to scan the object and generate a first digital signal; a second scanning stage spaced from the first scanning stage at a preset distance in a direction of the object's movement; a processing device configured to reconstruct a CT image of the object at a first image quality based on the first digital signal, and analyze the CT image; and a control device configured to adjust a scanning parameter of the second scanning stage based on an analysis result of the processing device to cause the second scanning stage to output a second digital signal. The processing device reconstructs a CT image of the object at a second image quality higher than the first image quality at least based on the second digital signal. The system takes full advantage of the distributed ray sources which replace the normal slip ring technology.
摘要翻译：公开了一种CT系统及其方法。该系统包括：输送机构; 第一扫描台，被配置为扫描所述物体并产生第一数字信号; 第二扫描台，在所述物体运动的方向上以预定的距离与所述第一扫描台隔开; 处理装置，被配置为基于所述第一数字信号以第一图像质量重建所述对象的CT图像，并分析所述CT图像; 以及控制装置，其被配置为基于所述处理装置的分析结果来调整所述第二扫描级的扫描参数，以使所述第二扫描级输出第二数字信号。处理装置至少基于第二数字信号，以比第一图像质量高的第二图像质量重构对象的CT图像。该系统充分利用了代替普通滑环技术的分布式射线源。

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