1. Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, D-79106, Germany
2. German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, D-69120, Germany
3. Department of Radiology, Medical Center, Faculty of Medicine, University of Freiburg, D-79106, Germany
4. Department of Neuroradiology, Medical Center, Faculty of Medicine, University of Freiburg, D-79106, Germany
5. Department of Radiology – Medical Physics, Department of Radiology, Faculty of Medicine, Medical Center, University of Freiburg, D-79106, Germany
6. Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, D-79106, Germany