| 摘要 |
A radiographic apparatus includes a radiation source for emitting radiation, a radiation detecting device for detecting the radiation, a radiation grid placed to cover a radiation detecting plane of the radiation detecting device, a pattern storage device for storing a plurality of patterns of shadows of the radiation grid falling on the radiation detecting device, an image generating device for generating an original image showing the object under examination and the shadows of the radiation grid, based on detection signals outputted from the radiation detecting device, a grid shadow estimating device for estimating a pattern of superimposed grid shadows, which are the shadows of the radiation grid appearing on the original image, from the patterns of shadows stored in the pattern storage device, and a removing device for removing the shadows of the radiation grid from the original image based on the superimposed grid shadows estimated.
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