Operative cranial neurosurgical anatomy [electronic resource] / Filippo Gagliardi, MD, PhD, Neurosurgeon Department of Neurosurgery and Gamma Knife Radiosurgery San Raffaele Scientific Institute Vita-Salute University, Milano, Italy, Cristian Gragnaniello, MD, PhD, MSurg, MAdvSurg, FICS, Surgical Director Harvey H. Ammerman Microsurgical Laboratory Department of Neurosurgery George Washington University, Washington, DC, USA, Pietro Mortini, MD, Professor and Chairman Department of Neurosurgery and Gamma Knife Radiosurgery San Raffaee Scientific Institute Vita-Salute University, Milano, Italy, Anthony J. Caputy, MD, FACS, Professor and Chairman Hugo V. Rizzoli Professor Department of Neurosurgery George Washington University, Washington, DC, USA