Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Yoshifumi Nagamoto

Takeshi Yoshiyuki

Kiyohiko Kitagawa

Kazutaka Maeta

Shigeki Takayama

Takashi Yazawa

Shigeru Kasai

Kunihiko Kinugasa

Tomofumi Orikasa

Ikuo Watanabe

Makoto Ushijima

Hideo Kobayashi

Yoshiharu Kanai

Shohei Takami

Tsutomu Shimonosono

Tomoko Ota

Yuuji Minemoto

According to one embodiment, a particle beam therapy system comprising: a circular accelerator configured to accelerate charged particles; a beam transportation line configured to lead the charged particles accelerated by the circular accelerator to an irradiation room; a shielding wall that is disposed around a radiation controlled area and shields radiation to be generated from the circular accelerator and the beam transportation line, the radiation controlled area being an area where the circular accelerator and the beam transportation line are disposed; a specific portion that is provided at a position that separates the radiation controlled area from outside of the shielding wall and can form an additional opening portion of the irradiation room; and a blocking portion configured to close the specific portion and shield radiation passing through the specific portion.

Particle beam therapy system, particle beam therapy system construction method, and particle beam therapy apparatus

A particle beam transport apparatus includes a vacuum duct, at least one magnet controller, and a scanning magnet. The vacuum duct is configured such that a particle beam advances through the vacuum duct. The magnet controller is disposed around a bent portion of the vacuum duct and is configured to control an advancing direction or shape of the particle beam. The scanning magnet is disposed on the downstream side of the magnet controller in the advancing direction and is configured to scan the particle beam by deflecting each bunch of the particle beam. The magnet controller includes a deflection magnet configured to deflect the advancing direction of the particle beam along the bent portion and a quadrupole magnet configured to converge the particle beam. The deflection magnet and the quadrupole magnet constitute a combined-function magnet arranged at the same point in the advancing direction.

Particle beam transport apparatus, rotary gantry, and particle beam irradiation treatment system

A particle radiation therapy apparatusincludes: a bedfor positioning of a patient; irradiation ports() that output a particle beam in a treatment room; a horizontal-direction imaging unitcomposed of a first X-ray sourceand a first X-ray detectorthat face each other with the bedinterposed therebetween; a vertical-direction imaging unitcomposed of a second X-ray sourceand a second X-ray detectorthat face each other with the bedinterposed therebetween; a storage roomfor housing the first X-ray detectorunder the floor when the horizontal-direction imaging unitis not used; and a support memberthat moves the first X-ray detectorabove the floor and supports it between the bedand the side of the irradiation portswhen the horizontal-direction imaging unitis used.

Particle radiation therapy apparatus

A particle beam treatment apparatus includes: a rotating gantry configured to axially rotate in a state where a bed fixed to a stationary system is disposed inside the rotating gantry and an irradiation port of a beam is fixed to a body of the rotating gantry; a tunnel structure configured to have at least a horizontal floor surface and have an internal space in which at least a part of the bed is accommodated; and a rotation supporter configured to cause the tunnel structure to be stationary in the stationary system independently of axis rotation of the rotating gantry by rotationally displacing the tunnel structure with respect to an inner side surface of the rotating gantry.

Particle beam treatment apparatus

A particle beam therapy apparatusincludes: a particle beam irradiatoroutputting a particle beam B; a movable supporting structuresupporting the particle beam irradiator; movable platesdisposed on a displacement trajectory of the particle beam irradiator, forming a substantially horizontal enveloping surface below a tablefor placing an irradiation object, and including first and second floor members in at least one of the movable plates, the second floor member being larger in X-ray transmittance than the first floor member; an X-ray generatorprovided in a non-collision areawhere the X-ray generatordoes not collide with any of the particle beam irradiator, the supporting structure, and the movable plates; and an X-ray detectorinstalled at a position where the X-ray detectorfaces the X-ray generator

Particle beam therapy apparatus

A particle beam therapy apparatus includes: a particle beam irradiator outputting a particle beam; a movable supporting structure supporting the particle beam irradiator; movable plates disposed on a displacement trajectory of the particle beam irradiator, forming a substantially horizontal enveloping surface below a table for placing an irradiation object, and including first and second floor members in at least one of the movable plates, the second floor member being larger in X-ray transmittance than the first floor member; an X-ray generator provided in a non-collision area where the X-ray generator does not collide with any of the particle beam irradiator, the supporting structure, and the movable plates; and an X-ray detector installed at a position where the X-ray detector faces the X-ray generator.

Provide a particle beam transport system that contribute to reduction of construction period and cost for a particle beam treatment facility including plural treatment rooms accommodating a particle-beam irradiation equipment. A particle beam transport systemincludes: a main lineconfigured to transport a particle beam generated by an accelerator outward; a branch linebranching from the main line; irradiation equipments(-) provided at respective ends of the branch lineand configured to irradiate a patient with the particle beam, wherein at least a part of the main lineand the branch lineis configured as plural segments; and beam characteristics of the particle beam of each of the plural segmentsare substantially equal at both ends.

Particle beam transport system, and segment thereof

A particle-beam control electromagnet capable of shortening a transportation path of a particle beam and an irradiation treatment apparatus which contributes to miniaturization and weight reduction of the rotating gantry supporting this control electromagnet are provided. The electromagnet includes a first superconducting coil group, a second superconducting coil group, and a vacuum vessel. The first superconducting coil group forms at least one of a bending magnetic field and a focus/defocus magnetic field. The second superconducting coil group is placed around the trajectory of the particle beam at the end of the first superconducting coil group and forms correction magnetic fields for correcting the trajectory of the particle beam. The vacuum vessel hermetically houses the first superconducting coil group, the second superconducting coil group, and a cooling medium, and insulates from the outside air.

Particle-beam control electromagnet and irradiation treatment apparatus equipped therewith

A superconducting magnet device for a single crystal pulling apparatus is arranged outside a pulling furnace containing a crucible for melting a single crystal material therein so as to apply a magnetic field to the melted single crystal material. The superconducting magnet device for a single crystal pulling apparatus includes a cryostat containing a superconducting coil therein, and a refrigerator port arranged on the outer circumferential surface of the cryostat and provided with a cryogenic refrigerator that cools the superconducting coil. The cryogenic refrigerator is provided in a region of the outer surface region of the cryostat at which the intensity of the magnetic field generated by the superconducting coil is weak.

Growing community of inventors

Yokohama, Japan

Yoshifumi Nagamoto