530 / 1726
EBRT techniques for nodal boost
IMRT
–
PITFALLS:
Uncertainties in hitting the target volume
Improving the technique !
Maximal margins (computer)
0
1
2
3
4
5
6
7
8
9
med
lat
ant
post
sup
inf
margin (ml)
Nodes move: up to 8 mm, majority < 4 mm
Less movement than primary tumor, but should be taken into account!