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EBRT techniques for nodal boost
IMRT–
PITFALL:
Uncertainties in hitting the target volume
Improving the technique !
Schippers M, et al.: 48 nodes contoured on MRI in 15 pts
volume lymph nodes (MRI)
0
0.5
1
1.5
2
2.5
3
pre
week1
week2
week3
week4
volume (cc)
Pre-treatment V = 2.5 cm
3
Post-treatment V = 1.2 cm
3
Nodes shrink to about 50 % of initial volume