This book describes the pathoanatomical, pathophysiological, and imaging features of vascular malformations and aneurysms of the brain and the modern, minimally invasive endovascular methods or techniques employed in their treatment. Individual chapters are devoted to venous malformations, capillary telangiectasias and cavernomas, pial arteriovenous malformations, dural arteriovenous malformations, and intracranial aneurysms. Each chapter is subdivided into four principal sections on pathology, clinical presentation, diagnostic imaging, and therapy, ensuring a standardized approach throughout. The book is richly illustrated with numerous informative CT, MR and DSA images.