783 / 1694
Intra-cranial stereotactic radiotherapy
Doses and margins in cranial SRS
Traditional frame-based SRS:
0mm margins
Minimum dose 13Gy
➢
EXCELLENT local control & low Tox.
➢
Delivered dose probably lower
Image-guided SRS:
Uncertainties similar to frame-based SRS
➢
Should we add margins?
➢
Should we prescribe lower doses if
margins are used?