Stereotactic radiation therapy in arteriovenous malformations and brain tumors using the Fixster system.

In brain tumours, stereotactic radiation therapy, performed in a single high dose (SHD) or fractionated (FSR), gives better results than conventional methods. In arteriovenous malformations (AVM), radiosurgery is a well-defined alternative to neurosurgery and embolization, if the malformation is not wider than 3 cm. In large AVMs, a successful combined technique of radiosurgery and FSR has been developed. In a series of 110 patients the experience proved that the atraumatic Greitz-Bergström stereotactic system is appropriate.