Epilepsy surgery, Acoustic neuroma surgery, Computer assisted brain surgery, Intraoperative magnetic resonance imaging,... Craniotomy, Transsphenoidal surgery, Skull base surgery, Minimally invasive neurosurgery, Endoscopic procedure, Pituitary tumor surgery, Meningioma, Brain tumor, Epilepsy, Acoustic neuroma, Cavernous malformations, Pituitary tumor, Chondrosarcoma, Skull base tumor, Embryonal tumor, Craniopharyngioma, Chordoma, CSF leak, Nerve sheath tumor