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Updated: Jul 27, 2026

PET and MRI Guided Irradiation of a Glioblastoma Rat Model Using a Micro-irradiator
Published on: December 28, 2017
Model validation confirms variable relative biological effectiveness and elevated periventricular sensitivity after
Martina Palkowitsch1, Larissa S Kilian2, Fabian Hennings1
1OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology - OncoRay, Dresden, Germany.
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.
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