Radiation imaging cassette

A radiation imaging cassette is provided with two types of communicating means within a housing. One is a wireless communicating means for communicating wirelessly with an imaging control means, and the other is a wired communicating means for communicating with the imaging control means. A metal detecting sensor for detecting metal in the periphery of the housing is also provided. A control section ceases the operation of the wireless communicating means and causes the radiation imaging cassette to communicate with imaging control means using the wired communication means, in response to detection of metal by the metal detecting sensor. Thereby, imaging operations are enabled to be performed safely even in cases that patients with pacemakers are in the vicinity of the radiation imaging cassette.