National Institute of Radiological Sciences

Kabushiki Kaisha Toshiba

Toshiba Medical Systems Corporation

Kyoto University

Kouji Noda

Takuji Furukawa

Shinji Sato

Yasushi Iseki

Katsushi Hanawa

Taku Inaniwa

Nobukazu Kakutani

Kazunao Maeda

Masahiko Ono

Tomoko Ishizaki

Arata Komuro

Hiroyuki Daido

Takanobu Ishii

Kiyoshi Miura

Akira Noda

Toshiyuki Shirai

Masahiro Ikegami

Shu Nakamura

According to one embodiment, an X-ray diagnostic apparatus includes a first arm, a second arm, a holding structure, an X-ray tube and an X-ray detector. The first arm rotates by a first rotating shaft and slides along a first arc-like slide axis relatively to the first rotating shaft. The second arm rotates by a second rotating shaft and slides along a second arc-like slide axis relatively to the second rotating shaft. The holding structure is connected with a first arm side and configured to hold the second arm. The X-ray tube and the X-ray detector are installed on the second arm.

X-ray diagnostic apparatus

A wireless foot switch according to one embodiment includes a battery unit, a switch unit, a controller, and a state switcher. The battery unit supplies power. The switch unit provides input to an X-ray diagnosis apparatus. The controller transmits by radio, to X-ray diagnosis apparatus, information input by the switch unit. Based on an external signal from the outside of the X-ray diagnosis apparatus, the state switcher causes the controller to transition from a resting state to an operational state.

Wireless foot switch and X-ray diagnosis system

In order to achieve reductions in the size and weight of an arm while ensuring the strength, an X-ray diagnostic apparatus includes an X-ray generation unit, an X-ray detection unit, an arm having an arch shape which supports the X-ray generation unit and the X-ray detection unit, and at least one reinforcing member which has a higher elastic modulus than the arm and a sheet-like shape and is fixed to the arm.

Provided is a particle beam irradiation apparatus capable of highly reliable measurement of a dose of each beam and capable of highly sensitive measurement of a leakage dose caused by momentary beam emission. The particle beam irradiation apparatus according to the present invention includes: an emission control portion that controls emission and termination of a particle beam; a control portion that sequentially changes an irradiation position of the particle beam relative to an affected area; first and second dosimeters that measure dose rates of the particle beam directed to the affected area; and an abnormality determination portion that accumulates the dose rates output from the first and second dosimeters for each of predetermined determination periods to calculate first and second sectional dose measurement values and that performs second abnormality determination of determining that there is an abnormality and outputs an interlock signal for terminating the emission of the particle beam in at least one of a case in which the first sectional dose measurement value exceeds a predetermined first reference range and a case in which the second sectional dose measurement value exceeds a predetermined second reference range.

Particle beam irradiation apparatus and control method of the particle beam irradiation apparatus

A particle beam irradiation apparatus that can measure and display a dose two-dimensional distribution during scan while reducing degradation of a particle beam shape, including a particle beam generation portion; a particle beam emission control portion; a two-dimensional beam scanning portion; a sensor portion including first linear electrodes arranged in parallel in a first direction and second linear electrodes arranged in parallel in a second direction orthogonal to the first direction; a beam shape calculation portion that calculates a center of gravity of the particle beam from outputs of each the first linear and second linear electrodes and that obtains a two-dimensional beam shape of the particle beam around the center of gravity; a storage portion that accumulates and stores the two-dimensional beam shapes; and a display portion that displays the two-dimensional beam shapes as a two-dimensional distribution of a dose.

An irradiation field forming device for forming an irradiation field when a specimen is irradiated with a charged particle beam generated by an accelerator, the irradiation field forming device includes: a range shifter arranged on a beam axis of the charged particle beam for regulating an irradiation depth of the charged particle beam; and two or more than two converging electromagnets arranged in the downstream of the range shifter for regulating a beam diameter of the charged particle beam which is enlarged by the range shifter to a constant value.

Irradiation field forming device

Provided are an ion beam control apparatus and a control method for controlling an ion beam energy expansion level and an ion beam size in a radial direction. An ion beam control apparatus Sa is provided with an ion beam generating unit, and an ion beam control unitin which a generated ion beam (IB) is input and controlled to be output with the prescribed level of energy expansion and the prescribed diameter in the radial direction. In the ion beam control unit, phase rotation by a radio frequency electric field that increases existing probability with the prescribed level of energy is at least used.

Ion beam control apparatus and method

A charged particle beamwhich enters a final bending electromagnetafter traveling through quadrupole electromagnetstravels through the final bending electromagnetin an arc shape path by increasing or decreasing a bending magnetic field generated in the final bending electromagnet, with a pre-determined period for example and is scanned in an X-direction. The charged particle beamscanned in the X-direction is scanned in a Y-direction while traveling through a Y-direction Wobbler electromagnet. Consequently, the charged particle beamis scanned in the X-direction and the Y-direction, and the targetis irradiated with the charged particle beamso that a round field is drawn, for example.

Charged particle beam irradiator and rotary gantry

A subscriber's terminal is connected by a cable to a control unit, which is connected to a central station by a cable. The subscriber's terminal has a voltage supply source for supplying power to the control unit through the cable. The subscriber's terminal detects a communication carrier from the control unit by a demodulator. Based on the detection result, the presence/absence of an abnormality such as disconnection of the cable, malfunction of the control unit, etc. is detected so as to control a relay arranged along the cable between the voltage supply source and the control unit. When the abnormality occurs in the cable or the control unit, power supply to the control unit is stopped, thus preventing electric shock accidents and noise interference.

Growing community of inventors

Chiba, Japan

Kouji Noda