ESTRO 2024 - Abstract Book

S4114

Physics - Inter-fraction motion management and offline adaptive radiotherapy

ESTRO 2024

PTV - ∆V95% (%)

Lung - ∆V20Gy (%)

min

max

min

max

p-CT vs CBCT fr1

0.02

-0.45

0.9

29.17

p-CT vs CBCT fr2

-0.33

-0.33

-0.06

-46.64

p-CT vs CBCT fr3

-0.04

-0.12

5.32

36.58

p-CT vs CBCT fr4

-0.32

-0.04

0.63

26.56

Conclusion:

In this work we show preliminary results related to a possible method to evaluate the differences between plans calculated on p-CT and daily CBCTs in terms of dose-volume parameters. Further investigation will be conducted to understand whether this method can be useful as a criterion for any clinical decisions.