Gynae BT 2017

PTV pathological lymph nodes

 Assumption:

 Lymph nodes are in a relatively fixed relation to bony anatomy  Bony registration aligns pathological lymph node target  Most often pathological lymph nodes shrink during RT

PTV (blue) GTV on 10 CBCT (red)

CBCT 1 st treatment

CBCT 24 th treatment

Anne Ramlov, Radiother Oncol, in press

8