1. Department of Neurosurgery, University of Tuebingen Medical Center, 72074 Tübingen, Germany
2. Department of Neuroradiology, University of Tuebingen Medical Center, 72074 Tübingen, Germany
3. Department of Neuropathology, University of Tuebingen Medical Center, 72074 Tübingen, Germany
4. Institute for Medical Image Computing, Fraunhofer MEVIS, 28359 Bremen, Germany
5. Department of Radiotherapy and Radiooncology, General Hospital Klinikum Bamberg, 96049 Bamberg, Germany
6. Department of Neurosurgery, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
7. Department of Neurosurgery, General Hospital Klinikum Bamberg, 96049 Bamberg, Germany