The invention relates to a radiotherapy assembly comprising a particle emitter (2) with an exit window (4) for a fixed particle stream (6) and a patient support device (16) comprising a patient couch (18A, 18B), which can be brought into an irradiation position that is suitable for irradiating a patient...http://www.google.de/patents/US7638779?utm_source=gb-gplus-sharePatent US7638779 - Medical radiotherapy assembly
