1. Skull Base Multi-disciplinary Unit, Department of Neurosurgery B, Neurological Hospital Pierre Wertheimer, Hospices Civils de Lyon, Lyon, France
2. Department of Anatomy, University of Lyon 1, Lyon, France
3. CREATIS Laboratory CNRS UMR5220, Inserm U1206, INSA-Lyon, University of Lyon 1, Lyon, France
4. Department of Radiology, Grenoble University Hospital, Grenoble, France
5. Department of Radiology, Lyon Sud Hospital, Hospices Civils de Lyon, Lyon, France