发明名称 |
Particle beam irradiation system and method of adjusting irradiation field forming apparatus |
摘要 |
A particle therapy system, as one example of a particle beam irradiation system, comprises a charged particle beam generator and an irradiation field forming apparatus. An ion beam from the charged particle beam generator is irradiated to a diseased part in the body of a patient through the irradiation field forming apparatus. A scattering compensator and a range modulation wheel (RMW) are disposed on the upstream side in a direction of beam advance and are movable along a beam axis. The movement of the scattering compensator and the RMW adjusts a size of the ion beam entering a scatterer device, whereby a change in scattering intensity of the ion beam in the scatterer device is adjusted. As a result, a penumbra in dose distribution is reduced and a more uniform dose distribution in a direction perpendicular to the direction of beam advance is obtained in the diseased part.
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申请公布号 |
US2005167616(A1) |
申请公布日期 |
2005.08.04 |
申请号 |
US20050090206 |
申请日期 |
2005.03.28 |
申请人 |
YANAGISAWA MASAKI;AKIYAMA HIROSHI;MATSUDA KOJI;FUJIMAKI HISATAKA |
发明人 |
YANAGISAWA MASAKI;AKIYAMA HIROSHI;MATSUDA KOJI;FUJIMAKI HISATAKA |
分类号 |
G21K3/00;A23L1/025;A61N1/44;A61N5/00;A61N5/10;G21K1/10;G21K5/04;G21K5/10;(IPC1-7):G21K5/10 |
主分类号 |
G21K3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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