Method for recording and reproducing a radiation image, panel an

Details Method for recording and reproducing a radiation image, panel an Method for recording and reproducing a radiation image, panel an

1990-03-23

1991-03-26

Cooper, Jack

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2503272, 2523014F, 428690, G01T 100, C09K 1179

Patent

active

050031813

ABSTRACT:
A method for recording and reproducing a radiation image comprising the steps of (i) causing a visible or infrared radiation stimulable phosphor to absorb a high-energy radiation passing through an object, (ii) stimulating said phosphor with visible or infrared radiation to release the stored energy as fluorescent light and (iii) detecting said fluoroescent light with light detecting means, is characterized by the fact that the photostimulable phosphor is selected within the group of rare earth orthosilicates activated with a first activator comprising cerium and/or terbium and a second activator comprising zirconium and/or samarium, wherein rare earth is one of (a) yttrium, (b) yttrium and lutetium and (c) yttrium, lutetium and gadolinium.
Panel for storing a radiation image containing the above described photostimulable phosphors.
Phosphors selected within the group of rare earth orthosilicates activated with a first activator comprising certium and/or terbium and a second activator comprising zirconium and/or samarium, wherein rare earth is one of (a) yttrium, (b) yttrium and lutetium and (c) yttrium, lutetium and gadolinium.

REFERENCES:
patent: 2569939 (1951-10-01), Lyon
patent: 3935119 (1976-01-01), Barber et al.
patent: 4261854 (1981-04-01), Kotera et al.
patent: 4741993 (1988-05-01), Kano et al.
patent: 4894583 (1990-01-01), Berkstresser et al.

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