ESTRO 2024 - Abstract Book

S894

Clinical - CNS

ESTRO 2024

- Paddick, I., et al. (2006). A simple dose gradient measurement tool to complement the conformity index. Journal of neurosurgery, 105 Suppl, 194 – 201. https://doi.org/10.3171/sup.2006.105.7.194

- Paddick I. (2000). A simple scoring ratio to index the conformity of radiosurgical treatment plans. Technical note. Journal of neurosurgery, 93 Suppl 3, 219 – 222. https://doi.org/10.3171/jns.2000.93.supplement

- Milano, M. T., et al. (2021). Single- and Multifraction Stereotactic Radiosurgery Dose/Volume Tolerances of the Brain. International journal of radiation oncology, biology, physics, 110(1), 68 – 86. https://doi.org/10.1016/j.ijrobp.2020.08.013

2215

Digital Poster

Interobserver contouring variability in postoperative stereotactic radiotherapy of brain metastases

Camilla Delli Paoli 1 , Fabiana Gregucci 2 , Francesco Beghella Bartoli 3 , Isacco Desideri 4 , Andrea Guerini 5 , Barbara Diletto 6 , Elisabetta Bonzano 7 , Anna Viola 8 , Claudia Scaringi 9 , Elena Clerici 10 , Stefano Dall'Oglio 11 , Mario Bignardi 12 , Beatrice Marini 10 , Dante Amelio 13 , Antonella Fontana 14 , Rita Marchese 15 , Alessandro Molinari 16 , Laura Berretta 17 , Rossella Di Franco 18 , Gaia Piperno 19 , Flavio Giannelli 20 , Martina Cantarella 21 , Piera Navarria 10 , Silvia Scoccianti 1 , Silvia Chiesa 3 1 Santa Maria Annunziata Hospital, Radiation Oncology, Florence, Italy. 2 Miulli General Regional Hospital, Radiation Oncology, Bari, Italy. 3 Fondazione Policlinico Universitario A. Gemelli, IRCCS, Radiation Oncology, Rome, Italy. 4 University of Florence, Radiation Oncology, Florence, Italy. 5 ASST Spedali Civili and Brescia University, Radiation Oncology, Brescia, Italy. 6 Azienda AUSL Bologna, Ospedale Bellaria, Radiation Oncology, Bellaria, Italy. 7 Fondazione IRCCS Policlinico San Matteo and University of Pavia, Radiation Oncology, Pavia, Italy. 8 Fondazione Instituto Oncologico del Mediterraneo, Viagrande, Radiation Oncology, Catania, Italy. 9 Sapienza University of Rome, Policlinico Umberto I, Radiation Oncology, Rome, Italy. 10 IRCCS Humanitas Research Hospital, Radiation Oncology, Rozzano, Italy. 11 Azienda Ospedaliera Universitaria Integrata Verona, Radiation Oncology, Verona, Italy. 12 Fondazione Poliambulanza Istituto Ospedaliero, Radiation Oncology, Brescia, Italy. 13 Proton Therapy Center, Radiation Oncology, Trento, Italy. 14 Santa Maria Goretti Hospital, Radiation Oncology, Latina, Italy. 15 ASL Taranto, Radiation Oncology, Taranto, Italy. 16 Ecomedica, Radiation Oncology, Empoli, Italy. 17 Alessandria Hospital, Radiation Oncology, Alessandria, Italy. 18 Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Radiation Oncology, Naples, Italy. 19 European Institute of Oncology (IEO) IRCCS, Radiation Oncology, Milan, Italy. 20 IRCCS Policlinico San Martino, Radiation Oncology, Genoa, Italy. 21 Pisa University Hospital, Radiation Oncology, Pisa, Italy

Purpose/Objective:

To investigate interobserver variability (IOV) of target volume delineation in post-surgery stereotactic radiotherapy (SRT) of brain metastases