Textural features in pre-treatment [F18]-FDG-PET/CT are correlated with risk of local recurrence and disease-specific survival in early stage NSCLC patients receiving primary stereotactic radiation therapy. - Pyka, Thomas; Bundschuh, Ralph A.; Andratschke, Nicolaus; Mayer, Benedikt; Specht, Hanno M.; Papp, Laszló; Zsótér, Norbert; Essler, Markus (Radiation Oncology, 2015)