Mri in guided radiotherapy and position verification

摘要

A magnetic resonance imaging (MRI) system 21 is integrated with a linear accelerator 22 in order to provide target position verification in radiotherapy. The MRI device and the accelerator may share the same isocentre, and the apparatus may include active magnetic shielding. The apparatus can be of open (figure 1) or closed (figure 2) configuration. The linear accelerator may include an X-ray gun for the production of X-rays for irradiation therapy.