Gynae BT 2017

EBRT techniques for nodal boost

Improving the technique !

IMRT– PITFALL: Uncertainties in hitting the target volume

Nodes shrink to about 50 % of initial volume

Schippers M, et al.: 48 nodes contoured on MRI in 15 pts

volume lymph nodes (MRI)

3

2.5

2

Pre-treatment V = 2.5 cm 3

1.5

1

volume (cc)

Post-treatment V = 1.2 cm 3

0.5

0

pre

week1

week2

week3

week4