937 / 1544
Changes in anatomy over the course of treatment
•
10 H&N pts, IMRT
•
CTVs and OARs delineated on CBCT at the10
th
, 15
th
, 20
th
,
25
th
treatment session and then compared with the planning
CT
•
A statistically significant increase of larynx volume at the 20
th
and 25
th
CBCT was observed
•
The main benefit of replanning could be to preserve parotis,
not to reevaluate the target
•
Check point at the 3
rd
week of radiotherapy in this pts
cohort
(Cozzolino
et al
, 2014)