Target Volume Determination 2015

Target volumes – overlaps

There are always occasions when PTV and OARs/PRVs overlap What is the best strategy? ... ... Use IMRT!

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