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PTV
•
An
isotropic 10-mm
expansion is recommended
on CTVs to generate PTVs.
•
Daily image guidance
is recommended for
IMRT, especially
prone patients
, which may
allow CTVePTV margin reduction to
5- to 7-mm
.
M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012