This publication provides an excellent overview of Japan's 20-year experience with stereotactic radiosurgery using the Leksell Gamma Knife. Leading experts discuss their long-term results with gamma knife radiosurgery. Studies focusing on dose selection for optimal treatment results and avoidance of complications are also presented. In addition, gamma knife treatments of extracranial pathologies are reviewed.

Today, over 500,000 patients have been treated world wide in 250 Gamma Knife Centres in 37 countries each one treating between 150 and 700 patients a year. The current book serves as a textbook, training manual and reference book for those involved in Gamma Knife practice covering the theoretical background, the practical aspects of treatment, the social side of the method and necessary information not only for users but for those who refer to the Gamma Knife. It also covers some aspects of the hospital and social administration required for optimal use of the technology, also looking at the effect of the internet on specialist medical practice. It also presents the completely new Gamma Knife (Perfexion), a new technology which extends the range of the Gamma Knife and will be the treatment standard for the future.

We all know that the field of neuro-oncology is heterogeneous and under continuous development with the addition of new knowledge and information on a regular basis. The present book "Brain Tumor - An Update" is an attempt to share the personal experiences of experts who are involved in neuro-oncology-related research. Through this book, the authors share their experiences and provide details about the pathophysiology, neuroimaging approaches, and management options, and how to go about decision-making in patients with brain tumors. We hope that the valuable contributions from the authors shall facilitate understanding about brain tumors. I am grateful to all the authors who have contributed their tremendous expertise, and I would like to acknowledge the outstanding support of Ms. Danijela Sakic, Author Service Manager, IntechOpen Science, who collaborated tirelessly in crafting this book.

Because of the huge clinical experience that has been accumulated in radiosurgery, it seems timely to explore and process out systematically pathological fundamentals on the effect of focused irradiation. The better understanding of radiobiology will enhance the outcomes of radiosurgical procedures. Renowned experts from all over the world discuss the baselines of pathology and radiobiology, medical physical principles, dose prescription guidelines, current radiosurgical techniques, advanced computer technology and recent imaging methods in radiosurgery. In this unique volume the most pioneering feature is the parallel discussion of clinical radiosurgical results with fundamental pathological findings following high-dose focused irradiation. Topics range from benign and malignant brain tumors, vascular malformations, functional disorders, ocular and spinal radiosurgery, interstitial brachytherapy to experimental efforts. This publication gives neurosurgeons, radiosurgeons, radiologists, pathologists, medical physicists, neurologists, oncologists, ophthalmologists, otolaryngologists as well as nuclear medicine and medical information technology experts an excellent understanding of the latest development of pathological fundamentals and new trends in radiosurgery.

The articles in this volume cover the various radiosurgical techniques used to treat benign and malignant intracranial tumors, cavernous malformations, and functional disorders, as well as a wide array of specific details on medical physics, neuroimaging, and anesthetic support. Particular emphasis is put on the optimal combination of microneurosurgery and radiosurgery for attaining the best functional results in patients with vestibular schwannomas, craniopharyngiomas, and pituitary adenomas, and on the most effective methods of treatment planning and radiation dosimetry in cases of metastatic brain tumors. The highlighted clinical aspects include indications for radiosurgery and the prediction of patients’ prognosis, along with analysis of outcomes in comparison with results achieved by other modalities in the context of multifaceted therapeutic strategies. In addition, possible options for applying advanced treatment using such modern devices as Leksell Gamma Knife PerfexionTM and IconTM are presented in depth. This information will interest both radiosurgical practitioners and neurosurgeons, and help them to provide optimal care and to achieve the greatest benefit of their patients. This book will serve as an excellent companion for the previous publication “Gamma Knife Neurosurgery in the Management of Intracranial Disorders” (Acta Neurochirurgica Supplement, Volume 116, Springer, 2013).

Recent strategies combining multiple modalities have opened up a whole new field of brain metastasis management focusing on disease control. The management of brain metastasis in modern times is no longer confined to palliation but seeks preservation of life quality and not only prolonged survival. Up-to-date guidelines and the main aspects of brain metastasis management as well as practical points on how to deal with difficult situations in daily clinical practice are presented. Epidemiology and biology and various effective treatment methods such as surgery, radiosurgery, radiation therapy and chemotherapy are well explained. Each chapter encompasses extensive reviews and presents broad perspectives on specific topics by the most renowned personages who have continuously shown their excellence in this rapidly progressing field.This book contains the most current information on the understanding of brain metastasis management. It is valuable reading for neurosurgeons, neuro-oncologists and radiation oncologists who are searching for the best all-round treatment for their patients.

An excellent summary of more than 30 years of accumulated experience Clinical outcomes of brain vascular malformation have been greatly improved by advances in microsurgery, endovascular techniques and stereotactic radiosurgery. Radiosurgery has proven to be the least invasive technique and is associated with documented long-term success. The papers in this volume present the experience of leading brain vascular malformation specialists who describe the outcome of radiosurgery for arteriovenous malformations, cavernous malformations and dural arteriovenous fistulas. These reviews expand the knowledge of the role of stereotactic radiosurgery alone or in combination with other treatment modalities. Evidence-based guidelines are included in each section to provide a summary of the current management strategies. This unique publication includes additional data that will further define the long-term benefit and risks of radiosurgery for these often complex vascular disorders and makes valuable reading for neurosurgeons, neurologists and endovascular specialists interested in an excellent summary of more than 30 years of accumulated experience in the management of brain vascular malformations.