| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a radiographic image with high image quality by reducing the influence of moire to be generated by a positional deviation between a radiation image detector and first and second gratings in a radiographic apparatus where the radiation image detector or the first and the second gratings are structured in such a manner to be attachable to the radiographic apparatus and detachable therefrom. <P>SOLUTION: The radiographic apparatus where the radiation image detector and the first and the second gratings are structured in such a manner to be attachable to the radiographic apparatus and detachable therefrom includes: a cassette attachment/detachment detection unit 63 that detects attachment and detachment of the radiation image detector; a grid attachment/detachment detection unit 64 that detects attachment and detachment of the first and second gratings; and a preliminary irradiation control unit 60a that controls a radiation source so that preliminary irradiation for detecting a relative positional deviation between the first and the second gratings and the radiation image detector is performed when attachment or detachment of the first and second gratings or the radiation image detector has been detected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
