Patent ID: 8227757

Claim:
A radiographic imaging system comprising: an imaging apparatus including, a detector configured to be irradiated with radiation incident on a first radiation field thereof and with radiation incident on a second radiation field thereof larger than the first radiation filed, the detector having a plurality of pixels arranged in a matrix, the pixels having conversion elements that convert the radiation incident on the detector into an electric charge, the detector being configured to perform a first radiography operation for outputting image data corresponding to the radiation with which the first radiation field is irradiated, and a second radiography operation for outputting image data corresponding to the radiation with which the second radiation field is irradiated, a light source that irradiates the detector with light separate from the radiation, and a control unit configured to control an operation of the detector including the first radiography operation and the second radiography operation, said control unit further configured to control the light source to irradiate the detector with the light; and a control computer configured to control the imaging apparatus, wherein the control computer further configured to determine an amount of light with which the light source irradiates the detector based on a dose of radiation used to irradiate the first radiation field of the detector in the first radiography operation, and applies a control signal to the control unit based on the determined amount of light, and wherein the control unit further configured to control the light source so that, in response to a change from the first radiography operation to the second radiography operation the light source irradiates the detector with the determined amount of light during a period between the first radiography operation and the second radiography operation.