ESTRO 2021 Abstract Book

S750

ESTRO 2021

Conclusion This is the first modeling of the SPArc delivery sequence which gave particle therapy community value information regarding the performance of the prototype arc system. Additionally, the study found that SPArc can offer a superior delivery efficiency to improve daily patient treatment throughput, compared to IMPT. Most importantly, this first model of the arc system helps the community to further develop and investigate this merging technqieu especially incorporating the arc delivery speed and time into the SPArc optimization algorithm.

Poster discussions: Poster discussion 31: Metastatic Prostate

PD-0908 PSA Progression and survival in mCRPC patients treated with abiraterone or enzalutamide F. Lopez Campos 1 , D. Lorente 2 , C. Llacer Pérez 3 , A. Gómez-Iturriaga 4 , I. Henriquez-López 5 , P. Peleteiro 6 , M. Ramirez-Backhaus 7 , J. Navarro-Castellón 8 , R. Lozano 9 , N. Romero 10 , P. Gajate 11 , C. Ana 12 , J. Gómez 13 , S. Álvarez 14 , J. Molina-Cerrillo 11 , L. Pelari 1 , A. Hernández-Corrales 1 , V. Morillo 15 , R. García 16 , C. Ferrer-Albiach 15 , E. Castro 17 , D. Olmos 9 1 Hospital Universitario Ramón y Cajal, Radiation Oncology, Madrid, Spain; 2 Hospital Provincial de Castellón, Medical Oncology, Castellón, Spain; 3 Hospital Virgen de la Victoria y Regional de Málaga, Medical Oncology, Málaga, Spain; 4 Hospital Universitario de Cruces, Radiation Oncology, Baracaldo, Spain; 5 Hospital Universitario Sant Joan de Reus, Radiation Oncology, Reus, Spain; 6 Hospital Clínico Universitario de Santiago de Compostela, Radiation Oncology, Santiago de Compostela, Spain; 7 Instituto Valenciano de Oncología,