Physics Athens 2016

Evolution towards IMRT

OAR

IMRT Intensity Modulated RT IMRT with Simultaneous Integrated Boost • Multiple MLC shaped segments per beam

target

Step and shoot with integrated boost, nodes to 55Gy, Prostate to 74 Gy Dose escalation

boost

3. 626 5. 877 =

CI

4.1

=

%95

Note CI not a “fair” comparison as dose is 95% of the lymph nodes, ie 70% of boost dose