Hitachi, Ltd.

Hitachi Setsubi Engineering Co., Ltd.

Hiroshi Saga

Tsutomu Yamashita

Shigeji Kaneko

Norio Takeda

Yutaka Muramatsu

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.

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Takahagi, Japan

Hiroshi Saga