ESTRO 2024 - Abstract Book

S4167

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

ESTRO 2024

Figure 2: The D 99% for the PTV in the predicted (blue) and the delivered (gray) plan for each fraction. The red circles mark the three fractions where the baseline plan (punctured line) was delivered.

Conclusion:

Results from the first six patients indicate that daily adaptation is needed to safely perform the proposed SBRT treatment of ultra-centrally located lung tumors. Furthermore, daily adaption is needed to optimize target coverage given the daily altered position of the OARs.

Keywords: MR-linac, Adaption, Ultra-central lung tumors

588

Proffered Paper

Beyond Voxel-Based Methods: Continuous Motion Modeling for Enhanced Deformable Image Registration

Xia Li 1,2 , Muheng Li 1,3 , Damien C. Weber 1,4,5 , Antony J. Lomax 1,3 , Joachim M. Buhmann 2 , Ye Zhang 1