Radiographic image capturing system and radiographic image capturing apparatus

A radiographic image capturing system comprising:

• a radiographic image capturing apparatus comprising:
• a two-dimensional array of radiation detecting elements which each have a first electrode and a second electrode;
• and
• a control circuit which controls reading of image data from each of the radiation detecting elements based on a predetermined capturing sequence;
• and
• an image processor which has first gain data to correct gains of the radiation detecting elements in the radiographic image capturing apparatus, which corrects the image data based on the first gain data, and which generates a radiographic image based on the corrected image data, wherein
• a reverse bias voltage is applied to the first electrode of each of the radiation detecting elements of the radiographic image capturing apparatus,
• a corresponding signal line is connected to the second electrode of each of the radiation detecting elements via a switching element,
• the control circuit of the radiographic image capturing apparatus is capable of varying at least one of the reverse bias voltage and a signal line voltage to be applied to the corresponding signal line, and
• after resetting of the radiation detecting elements, the control circuit reads a signal value from each of the radiation detecting elements by varying at least one of the reverse bias voltage and the signal line voltage, creates second gain data based on the read signal value, and corrects the radiographic image with the first gain data and the second gain data.