1. Neurosurgery Department and Radiosurgery Department, Pitié Salpêtrière—Sorbonne University Hospital, Paris, France;
2. Departments of Neurosurgery and Radiosurgery,
3. Interventional Neuroradiology, and
4. Medical Physics, Toulouse University Hospital, Toulouse, France; and
5. Department of Radiotherapy-Oncology, Pasteur Clinic, Toulouse, France