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Cherenkov radiation detection device and method

A radiation detector and radiation detection technology, which is applied in the field of photoelectric signal processing, radiation detection system and nuclear detection, can solve the problems that the direction information of Cherenkov events is difficult to be captured, limit the application and promotion of Cherenkov radiation, etc. , to achieve the effect of resisting the influence of biological tissue self-luminescence and improving the imaging signal-to-noise ratio

Inactive Publication Date: 2019-04-26
NANCHANG UNIV
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  • Claims
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Problems solved by technology

If the number of events emitted by the radiation event is small, or no other particles are detected, the direction information of the Cherenkov event will be difficult to capture, which greatly limits the application of Cherenkov radiation in biology, medicine, national defense, and industry. application and promotion on

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  • Cherenkov radiation detection device and method
  • Cherenkov radiation detection device and method
  • Cherenkov radiation detection device and method

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example 1

[0071] Here are the data processing parameters of this embodiment:

[0072] Step (1) A silicon photomultiplier tube enhanced by red light is used, and the detector adopts a ring structure;

[0073] Step (2) The coincidence time is about 2ns, and the coincidence judgment adopts offline time coincidence processing;

[0074] Step (3) uses the analytical method of reconstruction of the Cherenkov event to directly draw the time and location of Cherenkov.

example 2

[0076] Here are the data processing parameters of this application example 2:

[0077] Step (1) A photomultiplier tube with red light enhancement is used, and the detector adopts a flat panel structure;

[0078] Step (2) The coincidence time of the detector time window is about 10ns, and the coincidence judgment adopts online time coincidence processing;

[0079] Step (3) adopts iterative Cherenkov event reconstruction method to approximate the time and location of Cherenkov.

[0080] The Cherenkov radiation detection method provided by the present invention. Through time matching, the self-luminescence and background light of the organism are eliminated. Judging the time and position of the Cherenkov event by the relative position of the single photon event in the hole, the imaging quality of the Cherenkov imaging method is better than that of the single-view or current charge readout in the background art. The captured Cherenkov There are many photons.

[0081] In the Cherenkov rad...

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Abstract

The invention relates to a Cherenkov radiation detection device and method. After ejecting proton nuclides, positive electrons will move for a time period before annihilation, and in the prior art, anexisting detector cannot read position information and energy information of a Cherenkov event accurately. The Cherenkov radiation detection device comprises a photoelectric detector module, a multi-case time coincidence module and a Cherenkov even estimation module. The Cherenkov radiation detection method includes the steps that by placing a photoelectric detector array, the counts of Cherenkovphotons, emitted by charge particles, ejected to the detector module and time of all the counts is read; time coincidence is conducted on the read time; through relative positions of the photons in holes, the position where the Cherenkov event occurs is estimated. By the adoption of the Cherenkov radiation detection device and method, the spatial resolution and the imaging signal-to-noise ratio of a component can be improved effectively, and the Cherenkov radiation detection device and method are particularly suitable for living imaging, with the low demand for imaging depth, of plants and others.

Description

Technical field [0001] The invention relates to the fields of photoelectric signal processing, radiation detection systems and nuclear detection, in particular to a single-photon time-resolved Cherenkov radiation detector and detection method. Background technique [0002] After positrons emit proton-rich nuclides, they move for a period of time before they annihilate. During this time, if the speed of the high-energy charged particles released in the medium is higher than the speed of light in the medium, additional optical signals will be generated on the basis of the original radioactive signals. The device that detects visible light and near-infrared light generated by radionuclides based on this effect is called the Cherenkov radiation detector. Existing Cherenkov detectors, mainly high-speed photodetector units, are lacking in reading the position information and energy information of the Cherenkov event, such as the Cherenkov counter on the Alpha Magnetic Spectrometer. ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/24G01T1/18
CPCG01T1/24G01T1/18
Inventor 邓贞宙邓玉姗韩春雷刘钰熊力伟段志文
Owner NANCHANG UNIV
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