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公开(公告)号：US12153170B2
公开(公告)日：2024-11-26
申请号：US17987244
申请日：2022-11-15
Applicant: Nuctech Company Limited
Inventor： Gaowa Tuya , Chunxuan Hu , Kun Zhao , Zengxue Jin , Zhidan Ma
Abstract: The present disclosure provides a gamma camera imaging method and a gamma camera imaging device. The method includes: selecting, from energy spectrums captured by a gamma camera on one or more radioactive materials, one or more energy ranges of each radioactive material among the one or more radioactive materials as one or more monitored energy regions of the radioactive material; performing image reconstruction on the monitored energy regions of each radioactive material among the one or more radioactive materials; performing normalization on images obtained through the image reconstruction; and performing superimposing on the normalized images to form a composite image.
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公开(公告)号：US11295871B2
公开(公告)日：2022-04-05
申请号：US16668796
申请日：2019-10-30
Applicant: NUCTECH COMPANY LIMITED
Inventor： Hanping Li , Yuecheng Hu , Kun Zhao
Abstract: The disclosure provides a collimator assembly, comprising at least at least two collimators configured to be moveable relative to each other such that the collimator assembly is switchable between at least two collimation modes; in respective collimation modes, the at least two collimators are superposed with each other in a thickness direction of the collimator assembly, such that the collimator assembly presents different combined patterns for collimating and shielding rays incident onto the collimator assembly and that the collimator assembly has corresponding ray shielding thickness for effectively shielding rays.
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Patent Agency Ranking
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
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.
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4.发明授权Detector and a method for simultaneously detecting both gamma rays and neutron using the same 有权检测器和使用其同时检测伽马射线和中子的方法公开(公告)号：US08993977B2
公开(公告)日：2015-03-31
申请号：US14366899
申请日：2012-12-20
Applicant: Nuctech Company Limited
Abstract: The present invention discloses a detector. The detector includes a detector crystal, configured to detect incident rays therein; a plurality of moderator layers, configured to moderate neutrons entering the moderator layer; and a plurality of converter layers, configured to react with said moderated neutrons. The moderator layers and the converter layers are overlapped with each other, and the moderator layers and the converter layers are located outside the detector crystal.
Abstract translation: 本发明公开了一种检测器。 检测器包括检测器晶体，其被配置为检测其中的入射光线; 多个调节剂层，被配置用于调节进入调节剂层的中子; 以及多个转换器层，被配置为与所述调节中子反应。 调节器层和转换器层彼此重叠，并且调节剂层和转换器层位于检测器晶体的外部。
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5.发明申请METHOD AND DEVICE FOR PATROL INSPECTING AND POSITIONING A RADIOACTIVE SUBSTANCE 有权用于PATROL检测和定位放射性物质的方法和装置公开(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
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。
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6.发明申请DETECTOR AND METHOD FOR SIMULTANEOUSLY DETECTING GAMMA RAY AND NEUTRON RAY USING SAME 有权使用相同方法同时检测伽马射线和中子波的检测器和方法公开(公告)号：US20140361187A1
公开(公告)日：2014-12-11
申请号：US14366899
申请日：2012-12-20
Applicant: NUCTECH COMPANY LIMITED
Abstract: The present invention discloses a detector. The detector includes a detector crystal, configured to detect incident rays therein; a plurality of moderator layers, configured to moderate neutrons entering the moderator layer; and a plurality of converter layers, configured to react with said moderated neutrons. The moderator layers and the converter layers are overlapped with each other, and the moderator layers and the converter layers are located outside the detector crystal.
Abstract translation: 本发明公开了一种检测器。 检测器包括检测器晶体，其被配置为检测其中的入射光线; 多个调节剂层，被配置用于调节进入调节剂层的中子; 以及多个转换器层，被配置为与所述调节中子反应。 调节器层和转换器层彼此重叠，并且调节剂层和转换器层位于检测器晶体的外部。
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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
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.
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