PROBLEM TO BE SOLVED: To provide a radiographic imaging apparatus capable of appropriately preventing radiation reflected or scattered in the vicinity of a radiation source from reaching a first grating, etc.SOLUTION: A radiographic imaging apparatus 1 includes a radiation source 2 for irradiating radiation, a source grating 10 for making the radiation irradiated from the radiation source 2 into multiple light sources, and a radiation detector in which a conversion element for generating an electric signal in response to the irradiated radiation is two-dimensionally arranged, and the electric signal generated by the conversion element is read as an image signal. It further includes at least one first irradiation field diaphragm 12 on a radiation source 2 side of the source grating 10, and a second irradiation field diaphragm 13 separate from the first irradiation field diaphragm 12 in the vicinity of the source grating 10 for narrowing an irradiation field of the irradiated radiation so that radiation is irradiated to a predetermined range of a subject.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2016,JPO&INPIT【課題】放射線源付近で反射したり散乱したりした放射線が第1格子等に到達することを的確に防止することが可能な放射線画像撮影装置を提供する。【解決手段】放射線画像撮影装置1は、放射線を照射する放射線源2と、放射線源2から照射された放射線を多光源化する線源格子10と、照射された放射線に応じて電気信号を生成する変換素子が二次元状に配置され、変換素子により生成された電気信号を画像信号として読み取る放射線検出器とを備え、さらに、線源格子10の放射線源2側に第1照射野絞り12を少なくとも1枚備え、線源格子10の近傍に、第1照射野絞り12とは別体で、放射線が被写体の所定の範囲に照射されるように、照射される放射線の照射野を絞るための第2照射野絞り13を備える。【選択図】図7
