Hitachi, Ltd.

Hitachi Setsubi Engineering Co., Ltd.

Other

Tsutomu Yamashita

Yutaka Muramatsu

Hiroshi Akiyama

Hidehito Asano

Wataru Sagawa

Shigeji Kaneko

Hiroshi Saga

Norio Takeda

Tatsuya Fujisawa

Takenori Nishimura

A particle therapy system has an irradiation system attached to a rotary drum of a gantry. A radiation treatment cage disposed in the rotary drum includes a movable floor including a horizontal floor portion. The movable floor includes a number of footboards connected bendably and X-ray transmission plates. The movable floor has a slide member at each end thereof, and the slide member is movably attached to a guide rail that is provided for each of opposite side surfaces of the irradiation system. X-ray sources are disposed outside the rotary drum apart from each other in a circumferential direction of the rotary drum and attached to the outer surface of the rotary drum. The irradiation system includes X-ray detection systems opposite to the X-ray sources.

Particle beam therapy system having X-ray detectors attached to a particle beam irradiation system

A rotating irradiation therapy apparatus used for particle beam therapy includes a rotating gantry equipped with a charged particle beam irradiation device beam transport devices for guiding a charged particle beam to the irradiation device and a roller in contact with a ring member included in the rotating gantry and supporting the gantry. A front ring is disposed in contact with the roller of a rotating body support device at one end in the axial direction of the rotating gantry, and a rear ring is disposed in contact with the roller at the other end in the axial direction of the rotating gantry. At least one intermediate ring is disposed in a position different in the axial direction of the gantry between the front and rear rings and in contact with the roller.

Rotating irradiation therapy apparatus

A rotating irradiation apparatus includes a rotating gantryincluding a front ringand a rear ringand is provided with a beam delivery deviceand an irradiation deviceThe beam delivery devicedelivers an ion beam used for particle radiotherapy. Radial support devicesA andB support the front ringand radial support devicesA andB support the rear ringEach radial support device includes a linear guidean upper support structure disposed above the linear guideand a lower support structure disposed below the linear guideThe upper support structure is movably mounted on the lower support structure and is movable in the direction of the rotational axis of the rotating gantry

Rotating irradiation apparatus

A rotating gantry includes a link frame for supporting a plurality of rollers which rotatably support the rotating gantry, a brake for releasing a braking force applied to at least one of the rollers upon supply of air and applying the braking force to the one roller upon discharge of air, and a solenoid valve for sealing the supplied air in the brake when closed, and discharging the air from the brake when opened. The solenoid valve is supported by a solenoid valve support member mounted to the link frame such that the solenoid valve is positioned just near the brake. The rotating gantry can be more quickly braked and stopped while maintaining high irradiation accuracy.

Rotating gantry of particle beam therapy system

Disclosed is a medical particle irradiation apparatus comprising a rotating gantryincluding an irradiation unitemitting particle beams; an annular framelocated within and supported by the rotating gantrysuch that it can rotate relative to the rotating gantry; an annular framefixedly located opposite the annular frame; an anti-corotation mechanismbeing in contact with both the annular framesandto prevent the annular framefrom rotating together with the rotating gantryduring rotation of the rotating gantry; and a flexible moving floorinterposed between the annular framesand, the flexible moving floorbeing engaged with the annular framesandin such a manner as to move freely such that its bottom is substantially level and that it moves as the rotating gantry rotates.

Medical particle irradiation apparatus

Disclosed is a medical particle irradiation apparatus comprising a rotating gantry including an irradiation unit emitting particle beams; an annular frame located within and supported by the rotating gantry such that it can rotate relative to the rotating gantry ; an annular frame fixedly located opposite the annular frame ; an anti-corotation mechanism being in contact with both the annular frames and to prevent the annular frame from rotating together with the rotating gantry during rotation of the rotating gantry ; and a flexible moving floor interposed between the annular frames and , the flexible moving floor being engaged with the annular frames and in such a manner as to move freely such that its bottom is substantially level and that it moves as the rotating gantry rotates.

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Hitachi, Japan

Tsutomu Yamashita