US Patent 7935932 Radiation detection apparatus

An electronic cassette has a casing and a radiation detection device accommodated inside the casing, which detects radiation emitted from a radiation source and having passed through a subject, and converts the radiation into radiation image information. The electronic cassette further includes a winding member accommodated rotatably inside of the casing. The radiation detection device includes a flexible base. The radiation detection device is wound on the winding member, and a portion of the radiation detection device is capable of being pulled outside of the casing.