Kabushiki Kaisha Toshiba

Kozi Natori

Kyojiro Nambu

Masahiko Yamazaki

Mitsuru Yahata

Yutaka Shibata

Yoshiki Hirao

Koki Kikuchi

An X-ray computerized tomographic (CT) apparatus capable of facilitating alignment of focal spot position at the time of replacing an X-ray tube anew and capable of easily correcting the focal spot position even when the focal spot position of the X-ray tube is deviated. Thereby, the focal spot position of the X-ray tube remains fixed in a predetermined position. The X-ray computerized tomographic (CT) apparatus includes an X-ray tube which is freely movable in at least one of a horizontal direction and a vertical direction; a detection unit for detecting a dislocated degree of the focal spot position of the X-ray tube; and a controlling unit for automatically controlling the focal spot position of the X-ray tube based on data obtained from the detection unit so that the focal spot position of the X-ray tube remains fixed in a predetermined position. In a case where the CT apparatus is used for a helical scanning operation, the detection unit may further include a detection timing controller for controlling an instance of detection and alignment of the focal spot position by utilizing only an output of the X-ray amount detected at a predetermined position of a gantry.

X-ray CT apparatus having focal spot position detection means for the

A slip ring device comprises a cylindrical body of an insulating material, at least one ring of an electrically conductive material fitted on the outer periphery of the cylindrical body, at least one strip member of an electrically conductive material arranged on the outer periphery of the ring, a coupling member, situated between the strip member and the outer periphery of the ring, for electrically coupling the strip member and the outer periphery of the ring, at least one lead member of an electrically conductive material, having one end portion electrically connected to the ring and the other end portion led out of the inner periphery of the cylindrical body, and a brush unit of an electrically conductive material, situated in electrical contact with the strip member.

Slip ring device

Growing community of inventors

Tochigi, Japan

Kozi Natori