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AssigneeMinnesota Mining and Manufacturing Company
InventorsRomano Morlotti, Florian Krawietz
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A method for recording and reproducing a radiation image comprising the steps of (i) causing a phosphor, which can be stimulated by light radiation, to absorb a radiation passing through an object, (ii) stimulating said phosphor with light radiation to release the stored energy as fluorescent light, and (iii) detecting said fluorescent light with light detecting means, is characterized by the fact that said stimulating radiation is in the range of the visible light and the detected fluorescent light is in the range of the infrared radiation. Infrared emitting photostimulable phosphors include barium or strontium sulfates or solid solutions thereof doped with alkali metal ions. A method for obtaining said phosphors comprises heating at a temperature of at least 600.degree. C. A radiation image storage panel includes phosphors which, upon stimulation with visible light, emit radiation in the range of infrared region.
A method for recording and reproducing a radiation image comprising the steps of (i) causing a phosphor, which can be stimulated by light radiation, to absorb a radiation passing through an object, (ii) stimulating said phosphor with light radiation to release the stored energy as fluorescent light, and (iii) detecting said fluorescent light with light detecting means, characterized by the fact that said stimulating radiation is in the range of visible light and the detected fluorescent light is in the range of the infrared radiation.
A radiation image storage panel comprising a fluorescent layer including a phosphor which upon stimulation by light radiation emits radiation in the range of the infrared radiation.
A photostimulable phosphor selected from the group consisting of barium sulfates, strontium sulfates or barium and strontium sulfate solid solutions doped with alkali metal ions.
A method for obtaining photostimulable phosphors selected from the group consisting of barium sulfates, strontium sulfates and barium and strontium sulfate solid solutions doped with alkali metal ions, which comprises blending barium or strontium sulfates or barium and strontium sulfate solid solutions with at least 0.05% of an alkali metal sulfate, heating in air at a temperature of at least 600.degree. C. for at least 0.5 hour, cooling to room temperature and washing with water.
Dependencies are inferred from the claim text.