The University of Bristol;Swansea University;University Hospitals Bristol NHS Foundation Trust
发明人:
申请号：
EP11819000.8
公开号：
EP2654895B1
申请日:
2011.12.21
申请国别(地区):
EP
年份:
2018
代理人:
摘要：
A radiation beam, for example a therapeutic radiation beam such as an IMRT or VMAT X-ray beam is monitored using a Monolithic Active Pixel Sensor (MAPS) detector. Photons of the radiation beam can interact with the MAPS detector, and the radiation beam configuration can be estimated from the determined positions of the interactions. The detector is made sufficiently thin that it interacts only very weakly with the X-ray photons. For example, less than 1 in 103 of the X-ray photons might interact with the detector. Hence, the disturbance to the X-ray beam is negligible.
