Biological tumor volume predicts survival in recurrent High-Grade glioma: A multiparametric [18F]FET PET/MRI study. - Henssen, Dylan; Rullmann, Michael; Arens, Anne I.J.; Schildan, Andreas; Striepe, Stephan; Schürer, Matti; Scherlach, Cordula; Jähne, Katja; Stassart, Ruth; Sabri, Osama; Seidel, Clemens; Hesse, Swen (European Journal of Nuclear Medicine & Molecular Imaging, 2026)