公开(公告)号：US09829601B2

公开(公告)日：2017-11-28

申请号：US14367824

申请日：2012-12-20

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qiang Wang ,  Kun Zhao ,  Ming Ruan

IPC: G01T1/00 ,  G01V5/00 ,  G01T7/00 ,  G01T1/169

CPC classification number: G01V5/0008 ,  G01T1/00 ,  G01T1/169 ,  G01T7/00

Abstract: A method for patrol inspecting and locating a radioactive substance, comprising: providing a background radioactive intensity value of environment; collecting radioactive intensity values from a inspecting region by a detector at a plurality of sampling points on a patrol inspection route; calculating a radioactive intensity distribution in the inspecting region on basis of the collected radioactive intensity values and the background radioactive intensity value; and determining a position of the radioactive substance on basis of the radioactive intensity distribution. Furthermore, a device for patrol inspecting and locating a radioactive substance comprises: two or more detectors configured to collect radioactive intensity values from a inspecting region around a patrol inspection route, at each of a plurality of sampling points on the patrol inspection route; and a movable carrier configured to carry the detector and to move along the patrol inspection route to pass by the sampling points. The method and device can obtain the position and the radioactive intensity distribution of the radioactive substance within the inspecting region on basis of the multiple-point observation on the patrol inspection route.

公开(公告)号：US10042080B2

公开(公告)日：2018-08-07

申请号：US15061854

申请日：2016-03-04

Applicant: Nuctech Company Limited

Inventor： Qiang Wang ,  Jing Ma ,  Zhongrong Yang

IPC: G01D18/00 ,  G01V5/00 ,  G01T1/29

CPC classification number: G01V5/0016 ,  G01T1/2985

Abstract: X-ray scanning methods and systems are provided in embodiments of the present inventions. According to one illustrative implementation, an exemplary method may comprise: collecting background data when no X-ray is emitted; collecting air data when X-rays are emitted and there is no object to be scanned in an inspection channel; scanning an object to collect original scanning data; and preprocessing the original scanning data according to the background data and the air data to acquire scanned image data. In some embodiments, when performing an X-ray scanning of a static object, implementations may measure the background data and the air data and process the scanning data, thereby solving noise issues caused by mechanical vibration and thus improving the measurement accuracy.

公开(公告)号：US09945794B2

公开(公告)日：2018-04-17

申请号：US14932054

申请日：2015-11-04

Applicant: Nuctech Company Limited

Inventor： Lei Zeng ,  Qiang Wang ,  Long Du

IPC: G01N23/04 ,  G01V5/00

CPC classification number: G01N23/04 ,  G01V5/0016 ,  G01V5/0066 ,  G01V5/0075

Abstract: A scanning and imaging apparatus comprises a ray source configured to generate an X-ray and a detection device configured to receive an X-ray transmitted through an inspected object, wherein the ray source is configured to image the inspected object by emitting the X-ray to the inspected object. A radioactivity detector is configured to detect whether the inspected object comprises radioactive material synchronously with the process of scanning implemented by the scanning and imaging apparatus. In a case that the radioactivity detector detects radioactive material, an actual position of the radioactive material in an X-ray image of the inspected object obtained by the scanning and imaging apparatus is marked in the image. The above solutions improve the accuracy of displaying the position of the radioactive source in the X-ray image. Further, inspection of radioactive material can be implemented while scanning an image.

公开(公告)号：US20150025841A1

公开(公告)日：2015-01-22

申请号：US14367824

申请日：2012-12-20

Applicant: NUCTECH COMPANY LIMITED

Inventor： Qiang Wang ,  Kun Zhao ,  Ming Ruan

IPC: G01V5/00 ,  G01T1/00

CPC classification number: G01V5/0008 ,  G01T1/00 ,  G01T1/169 ,  G01T7/00

Abstract: A method for patrol inspecting and locating a radioactive substance, comprising: providing a background radioactive intensity value of environment; collecting radioactive intensity values from a inspecting region by a detector at a plurality of sampling points on a patrol inspection route; calculating a radioactive intensity distribution in the inspecting region on basis of the collected radioactive intensity values and the background radioactive intensity value; and determining a position of the radioactive substance on basis of the radioactive intensity distribution. Furthermore, a device for patrol inspecting and locating a radioactive substance comprises: two or more detectors configured to collect radioactive intensity values from a inspecting region around a patrol inspection route, at each of a plurality of sampling points on the patrol inspection route; and a movable carrier configured to carry the detector and to move along the patrol inspection is route to pass by the sampling points. The method and device can obtain the position and the radioactive intensity distribution of the radioactive substance within the inspecting region on basis of the multiple-point observation on the patrol inspection route.

Abstract translation: 一种巡视检验放射性物质的方法，包括：提供背景放射性强度值的环境; 在检查路线上的多个采样点处由检测器从检查区域收集放射性强度值; 根据收集的放射性强度值和背景放射性强度值计算检测区域的放射性强度分布; 并根据放射性强度分布确定放射性物质的位置。 此外，用于巡视检查和定位放射性物质的装置包括：两个或更多个检测器，被配置为在巡视检查路线上的多个采样点的每一个处从巡视检查路线周围的检查区域收集放射强度值; 并且构造成携带检测器并沿巡视检查移动的可移动承载件是通过采样点的路线。 该方法和装置可以根据巡视检查路线的多点观察，得到检查区内放射性物质的位置和放射性强度分布。

公开(公告)号：US10585050B2

公开(公告)日：2020-03-10

申请号：US15720639

申请日：2017-09-29

Applicant: Nuctech Company Limited

Inventor： Kun Zhao ,  Qiang Wang ,  Yangtian Zhang ,  Hua Peng ,  Yuanjing Li

IPC: G01T1/167 ,  G01N23/00 ,  G01V5/00

Abstract: A method and device for detecting radioactive sources is disclosed. In one aspect, an example method includes measuring, by a detector, a count rate curve of an inspection object while the inspection object moves through the detector. Pattern recognition is performed on the count rate curve. Whether there are radioactive sources in the inspection object is determined according to a result of the pattern recognition, and if there are radioactive sources in the inspection object, a type of the radioactive sources is determined.

公开(公告)号：US20160123901A1

公开(公告)日：2016-05-05

申请号：US14932054

申请日：2015-11-04

Applicant: Nuctech Company Limited

Inventor： Lei Zeng ,  Qiang Wang ,  Long Du

IPC: G01N23/04 ,  G01V5/00

CPC classification number: G01N23/04 ,  G01V5/0016 ,  G01V5/0066 ,  G01V5/0075

Abstract: A system and method for positioning radioactive material are provided. A scanning and imaging apparatus comprises a ray source configured to generate an X-ray and a detection device configured to receive an X-ray transmitted through an inspected object, wherein the ray source is configured to image the inspected object by emitting the X-ray to the inspected object. A radioactivity detector is configured to detect whether the inspected object comprises radioactive material synchronously with the process of scanning implemented by the scanning and imaging apparatus. In a case that the radioactive detector detects radioactive material, an actual position of the radioactive material in an X-ray image of the inspected object obtained by the scanning and imaging apparatus is marked in the image. The above solutions improve the accuracy of displaying the position of the radioactive source in the X-ray image. Further, inspection of radioactive material can be implemented while scanning an image. In this way, an error in the correspondence between inspection results of two systems when the two systems operate independently is avoided.

Abstract translation: 提供了放射性物质定位系统和方法。 扫描和成像装置包括被配置为产生X射线的射线源和被配置为接收通过检查对象传输的X射线的检测装置，其中，所述射线源被配置为通过发射X射线来对被检查物体进行成像 到被检查对象。 放射性检测器被配置为检测被检查物体是否与由扫描和成像设备实现的扫描过程同步地包括放射性物质。 在放射性检测器检测到放射性物质的情况下，在图像中标记由扫描和成像装置获得的被检查物体的X射线图像中的放射性物质的实际位置。 上述解决方案提高了在X射线图像中显示放射源位置的准确性。 此外，可以在扫描图像时实现放射性物质的检查。 以这种方式，避免了两个系统独立运行时两个系统的检查结果之间的对应关系的错误。