624-625 / 2001
Margins ? ! ?
As shown most centers consider a margin around the drawn prostatic contour
,
for treatment planning.
But margins for ………….
•
microscopic spread ?
•
peri-prostatic extension ?
Δ CTV definition
•
subclinical disease ?
•
uncertainties in seed placement ?
•
change of volume ?
•
change of position ?
Δ PTV definition