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.

公开(公告)号：US20240319113A1

公开(公告)日：2024-09-26

申请号：US18574706

申请日：2022-07-04

申请人： Nuctech Company Limited ,  Tsinghua University

发明人： Li ZHANG ,  Yunda SUN ,  Xin JIN ,  Wuyang LIANG ,  Zhenhua ZHAO ,  Kemin HU

IPC分类号： G01N23/04 ,  A61B6/00

CPC分类号： G01N23/04 ,  A61B6/52 ,  G01N2223/401

摘要： A digital radiography system and a digital radiography method. The digital radiography system includes: detectors (L) mounted on a plurality of detector arm supports (L1, L2) formed in a first plane (P); and a ray source (S) that is non-coplanar with the first plane (P). The digital radiography system further includes an image processing apparatus (10).

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.