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Three-dimensional scintillator optical fiber array X-ray detector and preparation method thereof

A fiber array and scintillator technology, applied in the field of X-ray imaging, can solve problems such as optical signal crosstalk, achieve high sensitivity, meet the needs of use, and achieve high-resolution effects

Active Publication Date: 2020-06-26
SHENZHEN ANGELL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a three-dimensional scintillator fiber optic array X-ray detector and its preparation method, which can effectively guarantee the spatial resolution and solve the problem of optical signal crosstalk

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  • Three-dimensional scintillator optical fiber array X-ray detector and preparation method thereof

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Embodiment 1

[0039] Please refer to figure 1 , Embodiment 1 of the present invention is:

[0040] A method for preparing a three-dimensional scintillator fiber optic array X-ray detector, comprising the steps of:

[0041] 1. After mixing methyl methacrylate, initiator and chain transfer agent, carry out prepolymerization reaction to obtain prepolymer.

[0042] In this embodiment, methyl methacrylate undergoes an in-situ polymerization reaction, and the reaction is carried out under the protection of an inert gas, and the inert gas is one of nitrogen, argon and helium. The mass ratio of the methyl methacrylate, the initiator and the chain transfer agent is 100:(0.05-0.2):(0.05-0.1). The initiator may be azobisisobutyronitrile, and the chain transfer agent may be 1-decanethiol. Weigh the methyl methacrylate, initiator and chain transfer agent and place them in a three-necked bottle, mix well, stir with a magnetic stirrer, and gradually raise the temperature to 80°C by means of an oil bath...

Embodiment 2

[0058] Embodiment 2 of the present invention is: a method for preparing a three-dimensional scintillator fiber optic array X-ray detector, which differs from Embodiment 1 in that:

[0059] The mass ratio of methyl methacrylate, initiator and chain transfer agent described in step 1 is 100:0.1:0.08; The mass ratio of release powder and methyl methacrylate in step 2 is 0.18:100, and the flashing The mass ratio of the scintillator to methyl methacrylate is 5:100; the temperature control treatment is specifically: the vacuum-treated scintillator prepolymer is incubated at 70°C for 12h, 60°C for 12h, and 85°C. Insulate at 100°C for 24 hours, at 100°C for 24 hours, and at 115°C for 24 hours.

Embodiment 3

[0061] Embodiment 3 of the present invention is: a method for preparing a three-dimensional scintillator fiber optic array X-ray detector, which is different from Embodiment 1 in that:

[0062] The mass ratio of methyl methacrylate, initiator and chain transfer agent described in step 1 is 100:0.05:0.1; The mass ratio of release powder and methyl methacrylate in step 2 is 0.15:100, and the flashing The mass ratio of scintillator to methyl methacrylate is 0.2:100; the temperature control treatment is specifically: the vacuum-treated scintillator prepolymer is kept at 68°C for 14h, 58°C for 14h, and 87°C. Incubate at 102°C for 22 hours, at 102°C for 22 hours, and at 113°C for 26 hours.

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Abstract

The invention discloses a three-dimensional scintillator optical fiber array X-ray detector and a preparation method thereof. The preparation method comprises the steps: mixing methyl methacrylate, aninitiator and a chain transfer agent and performing prepolymerization reaction to obtain a prepolymer; adding demolding powder and a scintillator into the prepolymer to obtain a scintillator prepolymer; sequentially carrying out vacuum treatment and temperature control treatment on the scintillator prepolymer to obtain a PMMA preform; carrying out wire drawing treatment on the PMMA preform and alight-cured adhesive to obtain a scintillator-doped plastic fiber core and an inner cladding; forming an outer cladding outside the inner cladding to obtain a plastic optical fiber; arranging the plastic optical fibers in an array to obtain an optical fiber layer; and respectively arranging an image sensor and a reflection fluorescent layer at two sides of the optical fiber layer to obtain the three-dimensional scintillator optical fiber array X-ray detector. According to the prepared X-ray detector, on the premise that the spatial resolution is not lost, the mass fraction of the scintillatorcan be increased, so the sensitivity of the detector is greatly improved, and the detection of ultra-low dose radiation is realized.

Description

technical field [0001] The invention relates to the technical field of X-ray imaging, in particular to a three-dimensional scintillator fiber optic array X-ray detector and a preparation method thereof. Background technique [0002] Realizing low radiation dose, high imaging resolution and high imaging speed has always been the potential market demand and future development direction of digital radiation imaging technology (Digitalradiography). In recent years, X-ray detectors have attracted more and more great interest of workers in the field of industry, academia and research. It is widely used in medical imaging (orthopedics, breast, dentistry, gastrointestinal tract, etc.) and real-time monitoring of human health (vascular and cardiac angiography, etc.) etc. has great application potential. Improving the quantum detection efficiency of the X-ray detector is the main way to reduce the dose of X-ray radiation. The imaging resolution and imaging speed depend on the materia...

Claims

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Application Information

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IPC IPC(8): G03B42/02B29D11/00
CPCG03B42/02B29D11/00663B29D11/00721
Inventor 王宗朋杜碧何可陈明杨春雷
Owner SHENZHEN ANGELL TECH
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