Gerrit Townsend Zwart,James Cooley,Ken Yoshiki Franzen,Mark R. Jones,Tao Li,Michael Busky
申请号：
US15796237
公开号：
US10456591B2
申请日:
2017.10.27
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An example particle therapy system includes: a synchrocyclotron to output a particle beam； a magnet to affect a direction of the particle beam to scan the particle beam across at least part of an irradiation target； scattering material that is configurable to change a spot size of the particle beam, where the scattering material is down-beam of the magnet relative to the synchrocyclotron； and a degrader to change an energy of the beam prior to output of the particle beam to the irradiation target, where the degrader is down-beam of the scattering material relative to the synchrocyclotron.
