PROBLEM TO BE SOLVED: To provide a radiographic imaging system capable of obtaining a response having a wide dynamic range without irradiating a subject (human body) with strong radioactive rays.SOLUTION: A CCD controller 22 reads out an imaging signal from each CCD image sensor 1 to 12 two times for a long exposure time and a short exposure time different therefrom with respect to the irradiation with a certain dose of radioactive rays from an X-ray generator 25. A main controller 26 takes a timing to cause a memory 24 to perform image synthesis of image data based on the imaging signals which are sequentially read out twice. Therefore, radiographic imaging can be performed with the radiation dose weak enough not to produce ill effect on the subject such as human body or other object and such irradiation of the subject with strong radioactive rays as has conventionally been done is not needed.COPYRIGHT: (C)2010,JPO&INPIT【課題】被写体(人体)に強い放射線を照射する必要がなく、広いダイナミックレンジの応答を得る。【解決手段】CCDコントローラ22により、CCDイメージセンサ1~12からの撮像信号の読出しを、X線発生器25による一定線量の放射線照射に対して異なる長露光時間と短露光時間との2回行い、2回、順次読み出された撮像信号による各画像データを、メインコントローラ26がタイミングを取ってメモリ24に画像合成させているため、人体やその以外の物体などの被写体に対して悪影響が生じない程度の弱い放射線量で、従来のように被写体に強い放射線を照射する必要がない。【選択図】図1
