Patent ID: 6512240
Filing Date: 2003-01-28
Classification: A61B,C09K,G01T,G21K

Abstract:
Method of reading a radiation image that has been stored in a photostimulable phosphor screen comprising the steps of(1) stimulating said phosphor screen by means of stimulating radiation emitted by a stimulating light source, (2) detecting light emitted by the phosphor screen upon stimulation and converting the detected light into a signal representation of said radiation image, (3) erasing said phosphor screen by exposing it to erasing light, wherein (4) said photostimulable phosphor screen comprises a divalent europium activated cesium halide phosphor wherein said halide is at least one of chloride and bromide obtained by the following steps: mixing CsX, wherein X represents a halide selected from the group consisting of Cl and Br, with between 1031 3 and 5 mol % of a Europium compound selected from the group consisting of EuXâ€²2, EuXâ€²3 and EuOXâ€², Xâ€² being a member selected from the group consisting of F, Cl, Br and I, firing the mixture at a temperature above 450Â° C., cooling said mixture, and recovering the CsX: Eu phosphor, and wherein (5) said erasing light is emitted by an erasing light source assembly comprising at least one laser.