Radiation image read-out method

摘要

A radiation image stored in a stimulable phosphor sheet is read out by exposing the stimulable phosphor sheet to stimulating rays which cause it to emit light in proportion to the radiation energy stored, and photoelectrically detecting the emitted light. Prior to final read-out for obtaining an electric image signal used for reproducing a visible image, preliminary read-out is conducted by uniformly exposing the whole surface of the stimulable phosphor sheet to stimulating rays to have the whole surface of the stimulable phosphor sheet emit light, detecting the amount of the light emitted by a specific region of the stimulable phosphor sheet, and grasping the radiation image information on the basis of the detected light amount.