Kabushiki Kaisha Toshiba

Toshiba Medical Systems Corporation

Hidetoshi Kudo

Kazunobu Nagai

Isamu Nitta

Mitsuru Yahata

Toyomasa Honda

Tadahiro Nakayama

Akiyuki Yokoyama

Masato Nagata

An X-ray CT device including a stationary part; a rotary part rotatable relative to the stationary part; an X-ray tube provided at the rotary part for radiating X-ray beams on an object; an X-ray detector provided at the rotary part opposing the X-ray tube, and that detects the X-ray beams passed through the object; an image processor that generates cross-sectional images of the object based on a detection signal outputted from the X-ray detector; a display that shows the cross-sectional images based on output signals delivered from the image processor; a first transmitting section configured by a rotary step-up transformer having a primary and secondary windings residing at the stationary and the rotary part respectively, and that steps up AC voltage provided by AC power source, and that further executes non-contact power transmission from the stationary part to the rotary part for supplying power to the X-ray tube.

X-ray CT device and method of imaging using the same

An X-ray tube comprises a cathode configured to emit a heat electron, a target, including a plurality of areas where target angles are different in a rotation direction, which the heat electron collides with, and a rotation mechanism configured to rotate the target in the rotation direction.

X-ray CT apparatus

An X-ray computed tomography apparatus includes a rotating frame section, an X-ray generating system mounted on the rotating frame section, electric power transmission means constituted by a slip ring and a brush and designed to supply electric power to the X-ray generating system, and a detection means for detecting an electric power supply state in the electric power transmission means.

X-ray computed tomography apparatus

The anode and cathode of an X-ray tube are connected to a high-voltage power source respectively, through corresponding tetrode tubes, and the center metal electrode of the X-ray tube is grounded. The tetrode tubes are simultaneously turned on and off upon receipt of a control signal. An abnormal current, which flows through the center metal electrode due to a short-circuiting fault of the tetrode tube connected to the cathode of the X-ray tube, is detected during an OFF period of the tetrode tubes. Upon detection of the abnormal current, the tetrode tube connected to the anode of the X-ray tube is forcedly turned on, thus preventing the fusion of the center metal electrode in the X-ray tube.

Growing community of inventors

Otawara, Japan

Hidetoshi Kudo