This mode of embodiment of the present invention relates to a radiation image capturing system which is provided with a structure for enabling a reduction in linear noise that is manifested in an image after integration, and which includes a solid-state image capturing device. The solid-state image capturing device includes: L imaging pixel regions arranged in a direction intersecting a direction of movement of a relative position of the solid-state image capturing device； and L A/D converting units provided corresponding to the L imaging pixel regions. Each imaging pixel region includes pixels disposed two-dimensionally to form a matrix having M rows and N columns. One or more of the L A/D conversion units executes a dummy A/D conversion one or more times after A/D conversion of an electrical signal from an m-th row pixel and before A/D conversion of an electrical signal from an (m+1)-th row pixel.本實施形態係關於一種包含具備用於可減少積算後之圖像中出現之線狀雜訊之構造之固體攝像裝置的放射線攝像系統等。固體攝像裝置具有：沿與該固定攝像裝置之相對位置之移動方向交叉之方向排列之L個攝像像素區域，及與L個攝像像素區域對應而設置之L個A/D轉換部。各攝像像素區域包含以構成M列N行矩陣之方式二維地配置之像素。L個A/D轉換部中任一者係在將來自第m列之像素之電信號予以A/D轉換後且將來自第(m+1)列之像素之電信號予以A/D轉換前，以一次或一次以上之次數執行虛設之A/D轉換。
