ESTRO 2024 - Abstract Book

S4257

Physics - Intra-fraction motion management and real-time adaptive radiotherapy

ESTRO 2024

across individual patients of [-0.5;3.1] mm (CC intra-BH drift), [-0.5;3.8] mm (CC pre-to-post-CBCT drift), and [-2.6;0.5] mm (anterior-posterior pre-to-post-CBCT drift).

Table 1. Population mean (± standard deviation) of the intrafraction LN drift motion on three different time scales in left-right (LR), cranio-caudal (CC) and anterior-posterior (AP) direction.

LR (mm)

CC (mm)

AP (mm)

Intra-BH drift

0.3±0.9

1.2±1.6

0.0±1.2

Inter-BH drift

0.0±0.6

0.2±1.2

0.1±1.0

Pre-to-post CBCT drift

0.1±1.9

1.1±2.4

-0.7±2.0

Conclusion: