Embryology of the Central Nervous System Vascular Network -- Embryological Development of CNS - Τhe Basic Features -- Embryology of the Cranial Arterial System -- Embryology of the Cranial Venous System -- Anatomy of the Central Nervous System Vascular Network -- The Cranial Arterial System -- The Cranial Venous System -- Aneurysms of the Anterior Brain Circulation -- Sidewall Aneurysms -- Bifurcation Aneurysms -- Anterior Communicating Aneurysms Middle Cerebral Aneurysms -- Aneurysms of the Posterior Brain Circulation -- Sidewall Aneurysms -- Bifurcation Aneurysms -- Brain Arteriovenous Malformations -- Brain Dural Arteriovenous Fistulas -- Carotid-Cavernous Fistulas -- Intracranial Arterial Stenosis -- Spinal Vascular Malformations -- Organization Of The Neuroendovascular Services.