METHOD AND APPARATUS FOR ACURING IMAGE FOR ENERGY SUBTRACTION PROCESSING

Radiation having a high energy level, in which high energy components have been emphasized relatively to other energy components, is irradiated to an object, and high energy image information corresponding to the radiation having a high energy level, which radiation carries image information of the object, is thereby stored on a radiation detector. The radiation detector is provided with a flat surface-like scintillator, which converts radiation into visible light, and a solid-state photodetector, which is overlaid upon the scintillator and is constituted of a plurality of solid-state photo detecting devices located in a matrix-like pattern. The stored high energy image information is read from the radiation detector. Thereafter, radiation having a low energy level, in which low energy components have been emphasized relatively to other energy components, is irradiated to the object, and low energy image information corresponding to the radiation having a low energy level, which radiation carries image information of the object, is thereby stored on the radiation detector. The stored low energy image information is read from the radiation detector.