1 History of the European-Japanese Cerebrovascular Congress -- PART I INTRACRANIAL ANEURYSMS -- 2 When is Diagnostic Subtraction Angiography Indicated Before Clipping of Unruptured and Ruptured Intracranial Aneurysms? An International Survey of Current Practice -- 3 Current Strategies in the Treatment of Intracranial Large and Giant Aneurysms -- 4 Computational Fluid Dynamics for Cerebral Aneurysms in Clinical Settings -- 5 Microneurosurgical Management of Posterior Inferior Cerebellar Artery Aneurysms: Results of a Consecutive Series -- 6 Posterior Circulation Aneurysms: A Critical Appraisal of a Surgical Series in Endovascular Era -- 7 Microneurosurgery for Paraclinoid Aneurysms in the Context of Flow Diverters Revolution -- PART II CEREBRAL REVASCULARIZATION -- 8 Characteristic Pattern of the Cerebral Hemodynamic Changes in the Acute Stage After Combined Revascularization Surgery for Adult Moyamoya Disease: N-isopropyl-p-[123I] iodoamphetamine Single-Photon Emission Computed Tomography Study -- 9 Outcomes of Balloon Angioplasty and Stenting for Symptomatic Intracranial Atherosclerotic Stenosis At a High Volume Center -- PART III ARTERIOVENOUS MALFORMATIONS AND DURAL ARTERIOVENOUS FISTULAS -- 10 Living with a Brain AVM: A Quality of Life Assessment -- 11 Complications in AVM Surgery -- 12 Surgical Simulation with Three-Dimensional Fusion Images in Patients with Arteriovenous Malformation -- 13 Surgical Treatment of Unruptured Brain AVMs: Short and Long Term Results -- 14 Maximum Nidus Depth as a Risk Factor of Surgical Morbidity in Eloquent Brain Arteriovenous Malformations -- 15 Brain Arteriovenous Malformations Classifications: A Surgical Point of View -- 16 The Pre-Operative Functional Downgrading of Brain AVMs -- 17 Intracranial Dural Arteriovenous Fistulas - The Sinus and Non Sinus Concept -- 18 Complications of Endovascular Treatment of Intracranial Dural Arteriovenous Fistulas -- 19 Spinal Dural AVFs, Classifications and Advanced Imaging -- PART IV MISCELLANEOUS -- 20 Intra-Operative BOLD-fMRI Cerebrovascular Reactivity Assessment -- 21 The Hybrid Neurosurgeon -The Japanese Experience.