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Fluorescent material for X-ray memory imaging

A fluorescent material and X-ray technology, applied in the field of X-ray imaging, can solve the problems of high price, unable to provide pictures in time, and high price

Inactive Publication Date: 2011-08-24
SHANGHAI DONGZHOU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] X-ray intensifying screen technology is made of fluorescent materials into intensifying screens, which enable X-ray films to obtain clearer images in a very short time, such as calcium tungstate, gadolinium terbium sulfide, zinc silver sulfide and other fluorescent material systems; but The disadvantages of using film imaging are that the pictures cannot be provided in time and the exposure time is long
Optically stimulated storage technology is to use fluorescent materials to make storage boards, which digitally store images under X-ray irradiation, and release images under red laser scanning, such as fluorescent material systems such as barium fluoride chloride, which have been widely used. Its disadvantages The data reading equipment is bulky and expensive
X-ray tomography (CT) uses scintillator imaging, and materials such as cesium iodide are commonly used. The disadvantages are that the material is highly toxic, requires high technical requirements for CDD, and is expensive.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get matrix material zinc sulfide, its purity is 99.99%, add activator copper sulfate, the add-on of activator is 5 * 10 per gram weight of matrix material -4 ; Add co-activator erbium nitrate, and the addition is 5×10 per gram weight of matrix material -3; Add the fluxing agent sodium chloride, and its addition amount is 3% of matrix material weight. After uniform adjustment with deionized water, dry at 110 degrees, and sinter in sulfur atmosphere and hydrogen sulfide atmosphere. The sintering temperature is 1100 degrees, and the time is 2 hours.

[0027] The prepared luminescent material is green luminescent powder.

[0028] Use commercially available colorless transparent ink, add fluorescent materials, screen-print a film with a thickness of less than 0.5 mm, cut it into the same area as the CCD chip, set it at the front of the chip, and completely shading and sealing it.

Embodiment 2

[0030] Get matrix material zinc sulfide, its purity is 99.99%, add activator copper sulfate, add-on is 1 * 10 per gram weight of matrix material -5 ; Add the activator manganese acetate, and the addition amount is 1×10 per gram weight of the matrix material -4 ; Add co-activator cerium nitrate, the addition is 7×10 per gram weight of matrix material -4 ; Add the flux potassium chloride, the amount of which is 2% of the weight of the matrix material. After uniform adjustment with deionized water, dry at 110 degrees, and sinter in sulfur atmosphere and hydrogen sulfide atmosphere. The sintering temperature is 1200 degrees, and the time is 3 hours.

[0031] The prepared luminescent material is orange-yellow luminescent powder.

[0032] Use commercially available colorless transparent ink, add fluorescent materials, screen-print a film with a thickness of less than 0.5 mm, cut it into the same area as the CCD chip, set it at the front of the chip, and completely shading and sea...

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PUM

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Abstract

The invention discloses a fluorescent material for X-ray memory imaging, which comprises zinc sulfide serving as a substrate material, wherein an activator which is an acidic compound of one or more of copper, silver, gold, manganese and lead is added into the substrate material; the added amount of the activator is 1*10<-5> to1*10<-3> of the weight of each gram of the substrate material; the fluorescent material is prepared by heating at high temperature, the prepared fluorescent material can generate memory longtime afterglowing after being activated by X-rays; the fluorescent material is coated on the surface of a film and glass; the film and glass are placed before a charge coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) light sensitive camera for shielding and sealing the light sensitive camera; the camera is connected with a computer; and thus, an X-ray instant quick imaging system is formed.

Description

technical field [0001] The invention belongs to the technical field of X-ray imaging applications. Background technique [0002] X-ray imaging is one of the important components in the fields of modern medicine and industrial inspection. Existing fluorescent materials for X-ray imaging mainly use material technologies such as background intensification, optical storage, and scintillators to realize object display and imaging through film or CCD digital processing. [0003] X-ray intensifying screen technology is made of fluorescent materials into intensifying screens, which enable X-ray films to obtain clearer images in a very short time, such as calcium tungstate, gadolinium terbium sulfide, zinc silver sulfide and other fluorescent material systems; but The disadvantages of using film imaging are that the pictures cannot be provided in time and the exposure time is long. Optically stimulated storage technology is to use fluorescent materials to make storage boards, which...

Claims

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Application Information

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IPC IPC(8): C09K11/86
Inventor 郑岩边静宇耿树范史陈峰陆红梅张凤勤
Owner SHANGHAI DONGZHOU IND
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