Patent ID: 7724877

Claim:
A radiographic imaging system comprising: a radiation source for irradiating a subject with radiation; a radiographic image data detector for detecting radiation that has penetrated the subject and acquiring radiographic image data of the subject; a grid located opposite a surface of the radiographic image data detector closer to the radiation source to remove scatter radiation occurring when the radiation penetrates the subject; a grid moving mechanism for moving the grid at least in a direction contained in a plane parallel to the surface of the radiographic image data detector closer to the radiation source; control means for acquiring first radiographic image data with the radiographic image data detector in a preset imaging time while moving the grid with the gird moving mechanism; and anomaly detection means for calculating a displacement of a grid image in the first radiographic image data based upon a position in which the grid is located and a displacement of the grid effected by the grid moving mechanism during the preset imaging time and detecting a defect in the first radiographic image data having a length agreeing with the calculated displacement of the grid image as an image anomaly attributable to the grid.