Book excerpt: In the continuous effort to further improve neurosurgery, intraoperative information on structure and function of the brain has become an important tool which potentially will result in an improved outcome of neurosurgical procedures. In this book experts from different countries and neurosurgical organizations have collected information on the state-of-the-art of intraoperative imaging, MRI, CT and ultrasound. Various contributions cover the future of neuroimaging, the impact of intraoperative imaging on glioma surgery, technical and neurosurgical aspects of the different imaging modalities and systems, and economical aspects. The present book thus provides a unique and comprehensive source of information on the complex of intraoperative imaging in modern neurosurgery.