Two dimensional image production method and system using solid-state image sensing device

A two dimensional image production method by using a solid-state image sensing device, wherein the solid-state sensing device comprises a picture element producing part where electric charges generated by way of photo-electric conversion when receiving exposure is stored as charge signals, and a dark current measuring part where a dark current is stored without receiving exposure, wherein said dark current measuring part is masked, said method comprising the step of:

• preparing and storing in advance the output ratio data for a fixed exposure time between dark current component of each pixel element or each pixel element column in said picture element producing part and that of a specified pixel element or a specified pixel element column in said dark current measuring part, and
• executing a predetermined arithmetic operation for the stored charge signals outputted from said picture element producing part depending on said output ratio data to remove said dark current component from said stored charge signals while performing radiography, thereby a two dimensional image being produced.