This volume is a comprehensive review of current endovascular techniques for the treatment of cerebral aneurysms. It is intended to be a practical manual for those practicing, or intending to practice, this rapidly expanding branch of minimally invasive surgery. The authors provide descriptions based on an extensive combined experience of clinical management, technical problems, complications and recent results. The limitations and role of combined extravasular/endovascular techniques are discussed to give a state-of-the-art view of this topic.