A first acquisition unit acquires an optical image in which both an electronic cassette in which a detection panel for detecting radiation is built in a portable housing and a subject facing radiography using the electronic cassette are shown, from a camera. A first demarcation unit demarcates a detection region of the radiation by the detection panel, the detection region being determined in accordance with a position of the electronic cassette, in the optical image. A second demarcation unit demarcates an imaging region which is a region to be imaged in the radiography, the imaging region being determined in accordance with a position of the subject, in the optical image. A display controller performs control of displaying a frame indicating the detection region and a frame indicating the imaging region on a touch panel display in a manner of being superimposed on the optical image.

A camera with a rotating optical lens assembly is provided. The camera includes a housing, a main lens coupled to the housing, a ground glass coupled to the housing in the internal cavity and designed to capture an image of the subject from the main lens, a pair of optical assemblies rotatably mounted to the housing and each having a plurality of telescoping tubular lens assemblies, a magazine coupled to the housing and storing a film, and a motor coupled to the housing and operably connected to the pair of optical assemblies by a plurality of linkage members. The motor is designed to simultaneously rotate the optical assemblies in opposite directions to permit each telescoping tubular lens assembly that moves in temporary alignment with the ground glass to transfer the captured image of the subject to an exposed portion of the film.

A first acquisition unit acquires an optical image in which both an electronic cassette in which a detection panel for detecting radiation is built in a portable housing and a subject facing radiography using the electronic cassette are shown, from a camera. A first demarcation unit demarcates a detection region of the radiation by the detection panel, the detection region being determined in accordance with a position of the electronic cassette, in the optical image. A second demarcation unit demarcates an imaging region which is a region to be imaged in the radiography, the imaging region being determined in accordance with a position of the subject, in the optical image. A display controller performs control of displaying a frame indicating the detection region and a frame indicating the imaging region on a touch panel display in a manner of being superimposed on the optical image.