METHOD FOR RECORDING AND REPRODUCING A RADIATION IMAGE, RADIATION IMAGE STORAGE PANEL, PHOTOSTIMULABLE PHOSPHORS AND METHOD FOR OBTAINING SAID STIMULABLE PHOSPHORS

摘要

Method For Recording And Reproducing A Radiation Image, Radiation Image Storage Panel, Photostimulable Phosphors And Method For Obtaining Said Stimulable Phosphors 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.