1. Department of Neurosurgery and Center for Stroke Research Berlin (CSB),
2. Berlin Institute of Health (BIH), Berlin, Germany; and
3. Charité CyberKnife Center,
4. Department of Radiation Oncology, and
5. Department of Nuclear Medicine, Charité–Universitätsmedizin Berlin, Germany;
6. Department of Neurosurgery, University of Messina, Messina, Italy