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SIOP Ependymoma II
FINAL Protocol
Version 1.2_November 14th, 2013
MRI obtained immediately before radiotherapy should be used
for treatment planning.
To properly delineate target volumes for this study
, complete information
defining the extent of disease before and after surgery is needed.
Pre- and post-operative MRI, in particular
pre- and post-gadolinium contrast T1, T2, and FLAIR sequences
,
should be reviewed. Sequences that best define post-operative
tumour bed and residual disease at each time point should be
utilized to define the GTV and registered to planning CT.
Target definition and margins