Patent ID: 7498583

Claim:
A radiation imaging apparatus, comprising: i) a plurality of radiation detector units, each of which is provided with a solid-state radiation detector, the solid-state radiation detector being capable of recording image information when radiation carrying the image information is irradiated to the solid-state radiation detector, the solid-state radiation detector outputting an image signal representing the image information having been recorded in the solid-state radiation detector, ii) a radiation detector unit supporting section for supporting the plurality of the radiation detector units in a state, in which the plurality of the radiation detector units are located at different distances from a radiation source for irradiating the radiation to the plurality of the radiation detector units and are arrayed in a one-dimensional direction or in two-dimensional directions, and iii) image composing means for: performing image composing processing on the image signals, which have been outputted from the plurality of the radiation detector units, and in accordance with the array of the plurality of the radiation detector units, and thereby acquiring a composed image signal; taking one radiation detector unit, which is among the plurality of the radiation detector units, as a reference unit; performing image size enlargement or reduction processing on each of the image signals, which have been outputted from the radiation detector units other than the reference unit, and in accordance with a ratio between a distance from the radiation source to the reference unit and a distance from the radiation source to each of the radiation detector units other than the reference unit; and thereafter performing the image composing processing on the image signal, which has been outputted from the reference unit, and processed image signals, which have been obtained from the image size enlargement or reduction processing having been performed on the image signals having been outputted from the radiation detector units other than the reference unit.