Panoramic radiographic apparatus and digital sensor cassette used for same apparatus

The panoramic radiographic apparatus (1) of the present invention has a cassette holder (9) capable of accommodating both a conventional film cassette (21) and a digital sensor cassette (22) loaded with an electric X-ray image detector (7), one at a time, in a rotary arm (5), wherein when a film cassette is mounted, the cassette holder is mechanically moved in accordance with the rotation of the rotary arm so as to carry out panoramic radiographing, and when a digital sensor cassette is mounted, without moving the cassette holder, the electric X-ray image detector is driven by supplying control signals corresponding to the rotation of the rotary arm to the digital sensor cassette to obtain image signals required for generating a panoramic X-ray image. Therefore, both the film cassette and the digital sensor cassette can easily be mounted, one at a time, whereby required panoramic X-ray images can be obtained by fully using the features of each type of cassette.