ESTRO 2023 - Abstract Book

S1459

Digital Posters

ESTRO 2023

On univariate analysis, no significant determinant was identified for the compliance score for the IMRT and VMAT plans. The T-score was found to be a borderline statistically significant determinant for the penalty score for the IMRT plans (ß = 0.903, 95% CI = -0.24 to 2.05, p = 0.079); none for the VMAT plans. On multivariate analysis, T-score was confirmed to be a significant determinant for penalty score for the IMRT plans (ß = 1.11, 95% CI = 0.15 to 2.07, p = 0.028). Conclusion The HYACINCT radiotherapy protocol is feasible with either IMRT or VMAT. VMAT may be beneficial in more extensive cases, as measured by the T-score.

Poster (Digital): Detectors, dose measurement and phantoms

PO-1739 A dedicated 4D phantom for MR-Linac time-resolved beam evaluation

L. Placidi 1 , C. de Almeida Ribeiro 2 , M. Nardini 3 , M. Galetto 2 , I. Zlatkova 2 , N. Franza 4 , L. Indovina 3