4[Pi] space panorama radioactive source positioning system and method

Abstract

The present invention discloses a 4[Pi] space panorama radioactive source positioning system and method. The system comprises: a three-dimensional ray positioning detector which is a cuboid, wherein any one surface of the three-dimensional ray positioning detector is provided with a multi-channel electronic electrical circuit to obtain a three-dimensional effect position of a gamma ray on the detector; a plurality of collimators arranged on other surfaces of the detector; and a data processing center configured to obtain statistical distribution of a measurement event at each coordinate dimension to obtain distribution information, obtain incident plane information of the gamma ray and perform two-dimensional reconstruction according to coordinate information of other two-dimensional dimensions and the transmission matrix information of the collimators at the incident plane to obtain a two-dimensional position distribution diagram of the radioactive source at the incident plane. The system can obtain a two-dimensional position distribution diagram of the radioactive source according to the coordinate dimension of the measurement event, can obtain radioactive source 4[Pi] positioning field of view, can avoid blind search and can improve the efficiency of radioactive source search.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation detection, in particular to a 4π space panoramic radiation source positioning system and method. Background technique [0002] With the development of science and technology, radioactive sources are widely used in various fields such as industry, agriculture, medicine, and military affairs, such as food sterilization, non-destructive testing, and radiation therapy. However, due to the high energy of the radioactive source, it can cause ionizing radiation, cause cell disease or damage cell tissue, and even cause harm to the human body, which is very dangerous. Therefore, strict management and monitoring of radioactive sources is required. When radioactive sources are lost, leaked or stolen, it is necessary to quickly search for radioactive sources to reduce their hazards. [0003] In related technologies, imaging detectors based on coded plates (such as collimators of gamma radiation sou...

AI Technical Summary

Problems solved by technology

[0003] In related technologies, imaging detectors based on coded plates (such as collimators of gamma radiation source locators, coded aperture imaging systems and their coded plates, etc.) limited field of vision

Although the detection of nuclear radiation with a 360-degree field of view can be realized by using multiple coded plate detectors uniformly distributed in the ring, this method requires multiple detectors, and ultimately does not achieve a 4π space panorama, which needs to be solved

Images