Model validation confirms variable relative biological effectiveness and elevated periventricular sensitivity after proton therapy of brain tumors.

Palkowitsch, Martina; Kilian, Larissa S; Hennings, Fabian; Lühr, Armin; Thiem, Justus; Grey, Arne; Bütof, Rebecca; Seidlitz, Annekatrin et al. · Radiother Oncol · 2026

retrospective_cohort · Level III

Where this comes from

Abstract

This study validates recently proposed voxel-wise and patient-wise predictive models for localization and occurrence of late radiation-induced contrast enhancements after proton therapy for brain tumors. Using an independent patient cohort, we confirmed the models' accuracy and reliability, emphasizing an increased radiosensitivity in periventricular regions and a linear-energy-transfer-dependent relative biological effectiveness.

Medical subject headings