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Intracranial stereotactic radiotherapy
Stereotactic radiosurgery (SRS)
Single fraction treatment
AVM, vestibular schwannoma, brain metastases, …
Usually invasive frame-based techniques
Multiple fraction stereotactic radiotherapy
Theoretical benefit of fractionation, if organs-at-risk with low α/β value are
close to the target
For large target volumes
Usually practiced non-invasively (masks, bite-blocks,....)
patient comfort
risk of infection
Accuracy differs between invasive and non-invasive stereotactic systems!