公开(公告)号：EP3242127B1

公开(公告)日：2018-11-28

申请号：EP17154154.3

申请日：2017-02-01

申请人： Nuctech Company Limited

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  YANG DAI, Tianyi ,  XING, Yuxiang ,  LI, Liang ,  HUANG, Qingping ,  SUN, Yunda ,  JIN, Xin ,  CHANG, Ming ,  SHEN, Le

IPC分类号： G01N23/20 ,  G01N23/046 ,  G01N23/20091

CPC分类号： G01N23/20083 ,  G01N23/046 ,  G01N23/20091 ,  G01N2223/637

摘要： A method and system for liquid detection are disclosed. The method for liquid detection according to embodiments of the invention includes: performing CT scanning and XRD scanning on a liquid substance simultaneously to obtain CT data and XRD energy spectrum data of the liquid substance (S102); extracting a molecular interference function of the liquid substance based on the CT data and the XRD energy spectrum data of the liquid substance (S104); and identifying the liquid substance by using the molecular interference function and the CT data of the liquid substance (S106). The method and system for liquid detection according to embodiments of the invention may obtain the molecular interference function with a higher signal-to-noise ratio and a larger effective range of the liquid substance and thus identify a wider range of liquid substances.

公开(公告)号：EP3276575A1

公开(公告)日：2018-01-31

申请号：EP17173576.4

申请日：2017-05-30

申请人： Nuctech Company Limited

发明人： ZHANG, Li ,  WANG, Sen ,  CHEN, Zhiqiang ,  XING, Yuxiang ,  JIN, Xin

IPC分类号： G06T7/33

CPC分类号： G06T7/33 ,  G06T2207/10004 ,  G06T2207/10081

摘要： The present disclosure discloses a method, an apparatus and a system for reconstructing an image of a three-dimensional surface. The method comprises the following steps of: constructing a three-dimensional model of the three-dimensional surface using X-ray imaging data obtained by imaging the three-dimensional surface with X-ray and extracting three-dimensional coordinate parameters of feature points; constructing one or more two-dimensional posture images of the three-dimensional surface using visible light imaging data obtained by imaging the three-dimensional surface with visible lights, and extracting two-dimensional coordinate parameters of feature points from each of the two-dimensional posture images; establishing a mapping relationship between the two-dimensional posture image and the three-dimensional model by matching the three-dimensional coordinate parameters and the two dimensional coordinate parameters of the feature points in each of the two-dimensional posture image; and filling the one or more two-dimensional posture image onto the three-dimensional model utilizing the mapping relationship established for each of the two dimensional posture images to form a reconstructed image of the three-dimensional surface, wherein the X-ray imaging data and the visible light imaging data of the three-dimensional surface along the same orientation are simultaneously captured.

摘要翻译： 本公开公开了用于重建三维表面的图像的方法，设备和系统。 该方法包括以下步骤：使用通过用X射线对三维表面进行成像获得的X射线成像数据并提取特征点的三维坐标参数来构建三维表面的三维模型; 使用通过用可见光对三维表面进行成像获得的可见光成像数据来构造三维表面的一个或多个二维姿态图像，并且从二维姿态中的每一个提取特征点的二维坐标参数 图片; 通过匹配二维姿势图像中的每一个中的特征点的三维坐标参数和二维坐标参数，建立二维姿势图像和三维模型之间的映射关系; 以及利用为每个二维姿势图像建立的映射关系将一个或多个二维姿势图像填充到三维模型上以形成三维表面的重建图像，其中X射线成像数据和 同时捕捉沿着相同取向的三维表面的可见光成像数据。

公开(公告)号：EP3242127A1

公开(公告)日：2017-11-08

申请号：EP17154154.3

申请日：2017-02-01

申请人： Nuctech Company Limited

发明人： CHEN, Zhiqiang ,  ZHANG, Li ,  YANG DAI, Tianyi ,  XING, Yuxiang ,  LI, Liang ,  HUANG, Qingping ,  SUN, Yunda ,  JIN, Xin ,  CHANG, Ming ,  SHEN, Le

IPC分类号： G01N23/20 ,  G01N23/04

CPC分类号： G01N23/20083 ,  G01N23/046 ,  G01N23/20091 ,  G01N2223/637

摘要： A method and system for liquid detection are disclosed. The method for liquid detection according to embodiments of the invention includes: performing CT scanning and XRD scanning on a liquid substance simultaneously to obtain CT data and XRD energy spectrum data of the liquid substance (S102); extracting a molecular interference function of the liquid substance based on the CT data and the XRD energy spectrum data of the liquid substance (S104); and identifying the liquid substance by using the molecular interference function and the CT data of the liquid substance (S106). The method and system for liquid detection according to embodiments of the invention may obtain the molecular interference function with a higher signal-to-noise ratio and a larger effective range of the liquid substance and thus identify a wider range of liquid substances.

摘要翻译： 公开了一种用于液体检测的方法和系统。 本发明实施例提供的液体检测方法，包括：对液体物质同时进行CT扫描和XRD扫描，得到液体物质的CT数据和XRD能谱数据（S102）; 基于液体物质的CT数据和XRD能谱数据提取液体物质的分子干涉函数（S104）; 并通过使用分子干涉函数和液体物质的CT数据来识别液体物质（S106）。 根据本发明的用于液体检测的方法和系统可以获得具有较高的信噪比和较大的液体物质的有效范围的分子干涉函数，并且因此识别较宽范围的液体物质。

公开(公告)号：EP4202839A1

公开(公告)日：2023-06-28

申请号：EP22213116.1

申请日：2022-12-13

申请人： Beijing Friendship Hospital, Capital Medical University ,  Tsinghua University

发明人： WANG, Zhenchang ,  XING, Yuxiang ,  ZHNAG, Li ,  YIN, Hongxia ,  CHEN, Zhiqiang ,  LI, Yuanjing ,  LI, Jianmin ,  ZHAO, Pengfei ,  LV, Han ,  ZHANG, Zhengyu ,  LI, Jing

IPC分类号： G06T11/00

摘要： The present disclosure discloses a computerized tomography (CT) reconstruction method and apparatus, an electronic device and a computer-readable storage medium. The method includes: acquiring detailed-view scanning data and full-view scanning data; performing ROI projection estimation on the detailed-view scanning data to obtain detailed-view projection estimation; performing analytical reconstruction processing on the detailed-view projection estimation to obtain first image estimation of a ROI; performing reconstruction on the full-view projection data to obtain second image estimation; and determining high-resolution image of the ROI using an image optimization model according to the first image estimation and first full-view image estimation. According to the embodiments of the present disclosure, a data integrity characteristic of full-view scanning and a high resolution characteristic of detailed-view scanning can be combined to reconstruct a CT image, which not only improves the quality of a reconstructed CT image, but also greatly improves the reconstruction efficiency.

公开(公告)号：EP4201338A1

公开(公告)日：2023-06-28

申请号：EP22214977.5

申请日：2022-12-20

申请人： Beijing Friendship Hospital, Capital Medical University ,  Tsinghua University

发明人： WANG, Zhenchang ,  ZHNAG, Li ,  YIN, Hongxia ,  XING, Yuxiang ,  CHEN, Zhiqiang ,  KANG, Kejun ,  LI, LIANG ,  ZHAO, Pengfei ,  ZHANG, Zhengyu ,  LI, Jing ,  LV, Han

IPC分类号： A61B6/04 ,  A61B6/08 ,  A61B6/00 ,  A61B6/03

摘要： Provided are a CT scanning method and system, an electronic device, and a computer-readable storage medium. The method includes: determining a first coordinate of a mark point of a part to be imaged in a dual-camera coordinate system; converting the first coordinate into a second coordinate of the mark point in a CT coordinate system according to coordinate system transformation parameters; generating first locating information according to the second coordinate to drive a scanning table to move to a first location designated by the first locating information; obtaining projection images of the part to be scanned; determining second locating information and scanning information of the part to be scanned according to the projection images; and driving the scanning table to move to a second location designated by the second locating information according to the second locating information and performing CT scanning according to the scanning information.