Patent ID: 7724874

Claim:
A radiation imaging apparatus comprising: an area sensor arranged with pixels in a matrix, each pixel having a conversion element for converting incident radiation into an electric signal; a driving circuit unit for applying a driving signal to a driving line and driving a plurality of the pixels connected in common to the driving line; a read out circuit unit reading out the electric signal from the pixel driven by the driving circuit unit and outputting the electric signal as image data; a processing unit for executing a process for producing image data for correction based on partial image data for correction, wherein the partial image data for correction is read out by the read out circuit unit as an electric signal from one or more of the plurality of pixels in the area sensor without the incident radiation while the one or more of the pixels are driven by the driving circuit unit and the other pixels are not driven by the driving circuit unit, and then outputted from the read out circuit unit; and an arithmetic operation unit for subjecting radiation image data to an arithmetic operation processing using the image data for correction, wherein the radiation image data is read out by the read out circuit unit as an electric signal from the pixels driven by the driving circuit unit based on the incident radiation, and then outputted from the read out circuit unit.