RADIATION IMAGING SYSTEM

PROBLEM TO BE SOLVED: To provide a radiation imaging system capable of performing control toward radiography by automatically and accurately specifying the position of an FPD cassette in a radiographic chamber even if an operator does not operate a console.SOLUTION: The radiation imaging system 50 includes, inside the radiographic chamber Ra: the FPD cassette 1 with a radio communication means; a radiation source 52; a plurality of radiographic devices 51A, 51B, 52P; and respective access points 53 corresponding to the respective radiographic devices, and includes the console outside the radiographic chamber Ra. The console compares each signal intensity SI when the respective access points 53 receive signals from the FPD cassette 1, with a threshold SIth, and when the access point 53 receiving the signal at the signal intensity SI equal to or more than the threshold SIth exists, the console allows a radiation generator 57 to start the radiation source 52 so that radiation imaging is performed using the radiographic device corresponding to that access point 53.