Gynae BT_Lucknow_2018

PTV pathological lymph nodes

 Assumption:

 Lymph nodes are in a 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, 2017

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