2017_IGRT course book

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!