•
IMRT (including VMAT) offers better possibilities to balance between
tumor dose needed and OAR dose to be avoided than conventional
treatment planning algorithms
•
We have medical evidence that IMRT reduces toxicity
•
However, IMRT treatment planning offers more degrees of freedom
•
Predefined dose parameters are essential for clinically acceptable
treatment plans
•
Therefore we must use current knowledge on dose volume relations
•
However, we still need to learn !
Conclusion