ESTRO 2021 Abstract Book

S698

ESTRO 2021

Conclusion Automatic, patient-specific PTV margins are feasible for midpos-based MR-linac lung SBRT planning, and result in clinically acceptable target coverage

PD-0863 Preliminary dosimetric report of 1.5-T MR-guided daily-adaptive SBRT for lymph-nodal oligometastases F. Cuccia 1 , M. Rigo 1 , D. Gurrera 1 , L. Nicosia 1 , R. Mazzola 1 , V. Figlia 1 , N. Giaj-Levra 1 , F. Ricchetti 1 , G. Attinà 1 , E. Pastorello 1 , A. De Simone 1 , S. Naccarato 1 , G. Sicignano 1 , R. Ruggieri 1 , F. Alongi 1,2 1 Sacro Cuore Don Calabria Hospital, Advanced Radiation Oncology Department, Negrar di Valpolicella, Italy; 2 University of Brescia, Radiation Oncology, Brescia, Italy