PROBLEM TO BE SOLVED: To provide an image processing device which does not require execution of plural times of image processing for estimating a scattered radiation component, even when image processing is performed by plural times to a radiation image.SOLUTION: An image processing device acquires a radiation image acquired by radiating a radiation to a subject, and a scattered radiation component formed of scattered radiations generated by scattering of the radiation, and executes image processing to the radiation image, according to an instruction. When the image processing device receives again the instruction to execute the image processing, executes the image processing based on the acquired radiation image and the scattered radiation component.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】 放射線画像に施す画像処理を複数回行っても、散乱線成分を推定するための画像処理を複数回行わなくてもよい画像処理装置を提供する。【解決手段】 画像処理装置は、被写体に放射線を照射することにより得られる放射線画像と、放射線が散乱して生じた散乱線による散乱線成分とを取得し、指示に応じて放射線画像に画像処理を施す。画像処理を行う指示を再度受け付けた場合には、取得された放射線画像と、散乱線成分とに基づいて画像処理を行う。【選択図】 図3