公开(公告)号：US20140185770A1

公开(公告)日：2014-07-03

申请号：US14138476

申请日：2013-12-23

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Yuanjing LI ,  Wanlong WU ,  Yingkang JIN ,  Li ZHANG ,  Le TANG ,  Chenguang ZHU ,  Xianli DING ,  Xiuwei CHEN ,  Ming RUAN ,  Chengcong XU ,  Xilei LUO

IPC: A61B6/00

CPC classification number: A61B6/483 ,  G01T1/167 ,  G01V5/0025

Abstract: Human body back-scattering inspection systems and methods are disclosed. In the invention, X-rays modulated by the flying-spot forming unit having spirally distributed flying-spots have a distribution having alternating peaks and valleys on the irradiated surface. In this way, scanning starting times can be precisely controlled to cause two devices to have scanning starting times that are different by a half of a cycle. That is, the beams outputted from one device are at maximum when the beams outputted from the other device are at minimum. In other words, even if the ray source of one device emits rays, it will not significantly affect imaging result of the other device. In such way, the two devices may emit rays and perform scanning at the same time, and thus the total scanning time is reduced.

Abstract translation: 公开了人体背散射检查系统和方法。 在本发明中，由具有螺旋状分布的飞点的飞点形成单元调制的X射线具有在照射面上具有交替的峰和谷的分布。 以这种方式，可以精确地控制扫描开始时间，以使两个装置的扫描开始时间不同于周期的一半。 也就是说，当从另一个装置输出的光束为最小时，从一个装置输出的光束是最大的。 换句话说，即使一个设备的射线源发射光线，也不会显着影响其他设备的成像结果。 以这种方式，两个装置可以发射光线并同时进行扫描，因此总扫描时间减少。

公开(公告)号：US20140185741A1

公开(公告)日：2014-07-03

申请号：US14135023

申请日：2013-12-19

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Le SHEN ,  Yuxiang XING ,  Qi SHEN ,  Meng CAO ,  Li ZHANG ,  Zhiqiang CHEN

IPC: A61B6/00 ,  G01V5/00

CPC classification number: A61B6/482 ,  A61B5/4869 ,  A61B6/027 ,  A61B6/5205 ,  A61B6/54 ,  G01N23/046 ,  G01N2223/419 ,  G01V5/005

Abstract: The present invention relates to a Computed Tomography (CT) imaging system, in particular to a multi-energy CT imaging system and imaging method.

Abstract translation: 本发明涉及一种计算机断层成像（CT）成像系统，特别涉及一种多能CT成像系统和成像方法。

公开(公告)号：US20250046012A1

公开(公告)日：2025-02-06

申请号：US18576857

申请日：2022-07-06

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Qingping HUANG ,  Hui DING ,  Yong ZHOU ,  Xin JIN ,  Liming YAO

IPC: G06T17/00 ,  G01V5/226

Abstract: An inspection system and method, the inspection system includes: a carrying device, at least one ray source and a detector assembly. The ray source and the detector assembly are lifted or lowered along a central axis of the carrying device relative to the carrying device. When viewed along the central axis, the ray source is translatable between scanning positions relative to the carrying device. When the ray source is at one of the scanning positions the ray source and the detector assembly are lifted or lowered relative to the carrying device along the central axis, and the ray source emits X-rays; and when the ray source and the detector assembly are lifted or lowered a predetermined distance the ray source translates to another scanning position. The inspection system further reconstructs a three-dimensional scanning image of the object to be inspected based on detection data of the detector assembly.

公开(公告)号：US20240410837A1

公开(公告)日：2024-12-12

申请号：US18697918

申请日：2022-10-08

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qingping HUANG ,  Mingzhi HONG ,  Li ZHANG ,  Zhiqiang CHEN ,  Yuanjing LI ,  Guipei LI ,  Jianxue YANG ,  Liguo ZHANG

IPC: G01N23/046

Abstract: The present disclosure relates to a field of detection apparatus technology, and in particular, to an attitude adjustment structure, a conveying device, and a radiation imaging system. An attitude adjustment structure includes: a base body, arranged in an X direction, the base body having a bearing surface, and the bearing surface being configured to place a detected object; a first adjustment assembly, arranged on the base body and configured to drive the detected object to deviate around a Y direction on the bearing surface and drive the detected object to move in the X direction; and at least one second adjustment assembly, arranged on the base body and configured to drive the detected object to rotate around a Z direction.

公开(公告)号：US20240361257A1

公开(公告)日：2024-10-31

申请号：US18573784

申请日：2022-07-06

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Qingping HUANG ,  Hui DING ,  Yong ZHOU ,  Xin JIN ,  Liming Yao

IPC: G01N23/046 ,  G01N23/083 ,  G01N23/10

CPC classification number: G01N23/046 ,  G01N23/083 ,  G01N23/10 ,  G01N2223/204 ,  G01N2223/3303 ,  G01N2223/643

Abstract: An inspection system, including: a carrying device; at least one ray source and a detector assembly. When the at least one ray source is located at one of scanning positions relative to the carrying device, the at least one ray source and the detector assembly are lifted or lowered along the rotation axis relative to the carrying device and the at least one ray source emits X-rays. After the at least one ray source and the detector assembly are lifted or lowered a predetermined distance relative to the carrying device, the at least one ray source rotates around the rotation axis relative to the carrying device to another one of scanning positions. The inspection system further reconstructs a three-dimensional scanning image of the object to be inspected based on detection data of the detector assembly.

公开(公告)号：US20240192151A1

公开(公告)日：2024-06-13

申请号：US18284598

申请日：2022-01-12

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Qingping HUANG ,  Mingzhi HONG ,  Yi CHENG ,  Minghua QIU ,  Yao ZHANG ,  Jianxue YANG ,  Lei ZHENG

IPC: G01N23/10 ,  G01N23/04 ,  G01N23/083

CPC classification number: G01N23/10 ,  G01N23/04 ,  G01N23/083

Abstract: A radiographic inspection apparatus and a vehicle-mounted security inspection system. The radiographic inspection apparatus includes a scanning device. The scanning device includes: an upright framework; a slip ring rotatably provided on the upright framework; and at least one locking mechanism. Each locking mechanism includes: a driving mechanism provided on the upright framework; and a locking portion provided on the driving mechanism and configured to press the slip ring in an axial direction of the slip ring under a driving of the driving mechanism, so as to prevent the slip ring from rotating relative to the upright framework.

公开(公告)号：US20240027369A1

公开(公告)日：2024-01-25

申请号：US18037617

申请日：2021-09-17

Applicant: NUCTECH COMPANY LIMITED

Inventor： Li ZHANG ,  Qingping HUANG ,  Mingzhi HONG ,  Zinan WANG

IPC: G01N23/083 ,  G01N23/04

CPC classification number: G01N23/083 ,  G01N23/04 ,  G01N2223/3303

Abstract: A radiographic inspection device is provided, including: a plurality of inspection channels, a scanning apparatus, a driving apparatus and a controller. The plurality of inspection channels are arranged side by side, and each inspection channel is configured to carry an object to be inspected. The scanning apparatus includes a radiation source mounted outside the plurality of inspection channels, and a receiving apparatus mounted outside the plurality of inspection channels and configured to receive a radiation beam emitted from the radiation source. The driving apparatus is configured to drive the radiation source and the receiving apparatus to move to a vicinity of each inspection channel. The controller is configured to control the scanning apparatus moved to the vicinity of one of the plurality of inspection channels to scan the object in the one of the plurality of inspection channels.

公开(公告)号：US20230350053A1

公开(公告)日：2023-11-02

申请号：US18139411

申请日：2023-04-26

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Ao ZHENG ,  Ji ZHAO ,  Hu TANG ,  Lei LEI ,  Shuo WANG ,  Yunda SUN

IPC: G01S13/88 ,  G06T5/50 ,  G06T7/62 ,  G06T7/70 ,  G06V10/74 ,  G06V20/70

CPC classification number: G01S13/887 ,  G06T5/50 ,  G06T7/62 ,  G06T7/70 ,  G06V10/761 ,  G06V20/70 ,  G06V2201/07 ,  G06T2207/20081 ,  G06T2207/20104 ,  G06T2207/20221

Abstract: Provided are a method and an apparatus of training a radiation image recognition model online and a method and an apparatus of recognizing a radiation image. Preset data is pre-stored in a radiation inspection system, and the preset data includes a first radiation image. The method of training radiation image recognition model online includes: collecting a second radiation image at the radiation inspection site; labeling the second radiation image online to form on-site collected data having a second labeling information, wherein the second labeling information is an incomplete labeling information of the second radiation image, and the second labeling information is used to indicate at least one of objects of interest in the second radiation image; synthesizing the preset data and the on-site collected data online to form a training data set; and training the radiation image recognition model online using the training data set.

公开(公告)号：US20220091051A1

公开(公告)日：2022-03-24

申请号：US17471725

申请日：2021-09-10

Applicant: NUCTECH COMPANY LIMITED ,  Tsinghua University

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Xiaofei XU ,  Le SHEN ,  Ming CHANG ,  Hu TANG ,  Xin JIN ,  Yunda SUN

IPC: G01N23/046 ,  G01N23/083

Abstract: A multi-channel static CT device is provided, and the multi-channel static CT device includes: a scanning channel including a plurality of scanning sub-channels; a distributed X-ray source including a plurality of ray emission points arranged around the scanning channel; and a detector module including a plurality of detectors arranged around the scanning channel, wherein the plurality of detectors are arranged corresponding to the plurality of ray emission points.

公开(公告)号：US20190204243A1

公开(公告)日：2019-07-04

申请号：US16234625

申请日：2018-12-28

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Kejun KANG ,  Jianmin LI ,  Xiulin NI ,  Yulan LI ,  Yuanjing LI ,  Zhiqiang CHEN ,  Li ZHANG ,  Liang LI ,  Xiang ZOU ,  Weifeng YU ,  Hejun ZHOU ,  Chunguang ZONG

IPC: G01N23/046

CPC classification number: G01N23/046 ,  G01N2223/33 ,  G01V5/005

Abstract: The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.