Target Volume Determination 2016

Target volumes – overlaps

There are always occasions when the PTV and OARs/PRVs

overlap

What is the best strategy?

The planning concept has changed between ICRU 62 and 83 …..

In fact changed

completely

in ICRU 83

ICRU 62 – edit PTV (even CTV) – fine for CRT

ICRU 83 –

do not

edit

– better for IMRT