Hitachi, Ltd.;National University Corporation Hokkaido University
发明人:
申请号：
EP13873829.9
公开号：
EP2952225A1
申请日:
2013.10.10
申请国别(地区):
EP
年份:
2015
代理人:
摘要：
The present invention provides a particle therapy system including an irradiation compensating device made up of an energy absorber, a first collimator, and a second collimator for use in a short-range region. The irradiation compensating device is characterized by a mechanism for attaching and detaching the first energy absorber, first collimator, and second collimator. The first collimator is located upstream where the beam diameter is small with a view to suppressing the width of the compensating device, thereby contributing to making the compensating device small and lightweight. The second collimator is located downstream to improve penumbrae.
