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……But what about protons
•
Physical properties of protons:
•
Reduce
low dose
irradiation with IMRT
•
Advantageous where there is an OAR
behind
PTV
•
However photons techniques have significantly improved:
•
Intelligent IMRT
•
DIBH
•
Positioning and IGRT
•
Questions:
•
With the gap narrowing, how much better is protons cf
best photons
?
•
What is effect of
DIBH
on protons (not widely available)?
•
Which
cases benefit most?