Radiation dose measurement method based on quantum dot electroluminescent principle

Abstract

The invention provides a radiation dose measurement method based on a quantum dot electroluminescent principle, which includes acquiring electroluminescent signals of an electroluminescent system based on a quantum dot in a radiation field through an image acquiring system, obtaining electroluminescent signal strength through processing and amendment, and obtaining radiation dose information according to functional relationship of the electroluminescent signal strength and the radiation dose. The novel radiation dose measurement method effectively improves space and time resolution of radiation dose measurement results, can be used for monitoring steady state radiation field dose, can also be used for monitoring pulse radiation filed dose, can obtain two-dimensionally or three-dimensionally distributed real-time information of the radiation dose, and can obtain radiation dose information with spatial discrimination reaching micron dimension.

Description

technical field [0001] The invention relates to radiation dose measurement, which belongs to the dose measurement method in multidisciplinary interdisciplinary fields such as nuclear technology and application, radiation medicine and radiation biology, radiation protection and the like. Background technique [0002] Radiation dose is the key information in the fields of radiotherapy, radiation protection, etc. At present, radiation dose measurement methods can be divided into passive measurement methods (nuclear latex, track detectors, thermoluminescence detectors, optical luminescence detectors, etc.) and active measurement methods Methods (semiconductor detectors, scintillator detectors, ionization chamber detectors, etc.), passive detectors are suitable for both pulsed and steady-state radiation fields, and some passive detectors can give two-dimensional distribution information, such as film dosimeters, but Passive detectors cannot give real-time information; active dete...

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Problems solved by technology

Due to the interference of the excitation light source and the inconvenience of use, the patent needs to move the quantum dots out of the radiation field and then measure their photoluminescent signal, which makes it impossible to achieve real-time measurement of radiation dose in this patent

At the same time, the patent No. US 2010 / 0176308A1 finally reflects the radiation dose information through one-dimensional electrical signal measurement, so the radiation dose information obtained is also one-dimensional, and there are also shortcomings of active measurement methods

[0004] Therefore, the existing passive measurement method cannot provide real-time radiation dose information; the existing active measurement method has the problem of count loss in the pulsed radiation field; the current radiation dose measurement method has insufficient spatial and temporal resolution, and cannot obtain micron-level Real-time radiation dosimetry information (at the cellular scale)

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