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Large-view radioactive source positioning system and method

A positioning system and radioactive source technology, applied in the field of nuclear radiation detection, can solve problems such as limited imaging field of view, and achieve the effects of increasing imaging field of view, light weight, and small size

Pending Publication Date: 2021-07-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a large field of view radioactive source positioning system and method to solve the technical problem of limited imaging field of view of a radioactive source detection system with a collimator

Method used

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  • Large-view radioactive source positioning system and method

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] This embodiment provides a large field of view radioactive source positioning system, such as figure 1 As shown, it includes: a collimator 1, a plurality of side shielding layers 2, a main gamma imaging detector 3 and a plurality of side gamma imaging detectors 4; wherein,

[0036] The plurality of side shielding layers 2 are arranged around the main gamma imaging detector 3, forming a cylindrical shielding structure outside the main gamma imaging detector 3; the collimator 1 and the The main gamma imaging detectors 3 are respectively located at both ends of the cylindrical shielding structure; the side gamma imaging detectors 4 are adjacent to the main gamma imaging detectors 3, and each of the side gamma imaging detectors The...

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Abstract

The invention discloses a large-view radioactive source positioning system and method. The system comprises a main gamma imaging detector, a plurality of side gamma imaging detectors, a plurality of side shielding layers and a collimator, wherein the plurality of side shielding layers surround the main gamma imaging detector to form a cylindrical shielding structure, the collimator and the main gamma imaging detector are located at the two ends of the cylindrical shielding structure respectively, the side gamma imaging detector is adjacent to the main gamma imaging detector and is arranged on the inner side wall of the cylindrical shielding structure, and each detector is used for capturing incident information of gamma rays entering the positioning system through the collimator in different view fields and carrying out imaging and image reconstruction, so that the position information of the radioactive source is obtained through the reconstructed image. According to the scheme, the visual field of the detection system is enlarged, and blind search can be reduced in radioactive source positioning; and the size of the system can be controlled, and carrying and using are convenient.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation detection, in particular to a large-view radioactive source positioning system and method. Background technique [0002] With the rapid development of nuclear science and technology, nuclear energy is widely used in industry, agriculture, medical treatment, national defense and other fields. Then there are also problems such as improper management of radioactive sources, loss and theft. For the consideration of ecological environment protection and human health and safety, it is extremely important to be able to quickly and accurately detect and locate radioactive sources when radioactive sources are leaked, lost or stolen. [0003] A gamma camera with a collimator adds azimuth information to source searches, but the collimator also limits the imaging field of view of the detector. The imaging field of view of the system can be expanded by directly increasing the area of ​​the detector...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/202G01T1/24
CPCG01T1/202G01T1/248
Inventor 魏清阳马菊香张朝晖
Owner UNIV OF SCI & TECH BEIJING
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