Gerrit Townsend Zwart,Mark R. Jones,Miles S. Wagner,James Cooley,Eros Pedroni,Robert Silva
申请号：
US15438544
公开号：
US20170157422A1
申请日:
2017.02.21
申请国别(地区):
US
年份:
2017
代理人:
摘要：
An example particle therapy system includes a particle accelerator to output a particle beam having a spot size； a scanning system for the particle accelerator to scan the particle beam in two dimensions across at least part of a treatment area of an irradiation target； and an adaptive aperture between the scanning system and the irradiation target. The adaptive aperture includes structures that are movable relative to the irradiation target to approximate a shape to trim part of the treatment area. The part of the treatment area has a size that is based on an area of the spot size.
