发明名称 |
Gantry-type particle beam irradiation system and particle beam therapy system comprising same |
摘要 |
In gantry type particle beam irradiation system comprising a gantry and being configured to irradiate a particle beam, which has small emittance in X direction and large emittance in Y direction at an extraction position of a circular accelerator, from an irradiation nozzle installed in the gantry to an irradiation target, the irradiation nozzle has a ridge filter which is installed so as for a direction in which emittance in X direction is maintained to tilt to a direction which is perpendicular to a ridge of the ridge filter by a predetermined angle in the state where the gantry is a reference angle. |
申请公布号 |
US9079025(B2) |
申请公布日期 |
2015.07.14 |
申请号 |
US201214380784 |
申请日期 |
2012.04.19 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
Sugahara Kengo;Hanakawa Kazushi;Honda Taizo |
分类号 |
A61N5/10;G21K5/04;G21K1/10 |
主分类号 |
A61N5/10 |
代理机构 |
Buchanan Ingersoll & Rooney PC |
代理人 |
Buchanan Ingersoll & Rooney PC |
主权项 |
1. A gantry type particle beam irradiation system which comprises a gantry and is configured such that a particle beam is extracted from a circular accelerator, in a case where a direction in a circular track plane of the circular accelerator is defined as X direction in a plane which is perpendicular to a travelling direction of the particle beam at an extraction position of the circular accelerator, and the direction which is perpendicular to X direction in a plane which is perpendicular to the travelling direction of the particle beam is defined as Y direction, the particle beam has small emittance in X direction and large emittance in Y direction, and the particle beam which is transported by a particle beam transportation unit is irradiated from an irradiation nozzle installed in the gantry to an irradiation target,
wherein the irradiation nozzle has a ridge filter, an angle of the gantry, with which the particle beam is transported so as for emittance in X direction and emittance in Y direction at the extraction position of the circular accelerator to be separated and to maintain each emittance at a position where the particle beam is incident on the irradiation nozzle, is defined as a reference angle, in the state where the gantry is the reference angle the ridge filter is installed so as for the direction in which emittance in X direction is maintained is tilted to the direction which is perpendicular to a ridge of the ridge filter by a predetermined angle. |
地址 |
Chiyoda-Ku, Tokyo JP |