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RT in PCNSL: Field design
•
CTV
: Whole brain including meninges at level C1 and
C2 and the posterior aspect of the eyes.
• In case of parallel opposed fields: set iso-center anteriorly
and bisects the bony canthi (to reduce divergence in
possible future match to ocular field).
• If the eyes were originally involved, both eyes should be
included in their entirety in WBRT field.