This atlas shows drawings of anatomical landmarks for neuronavigation for preoperative planning. The authors show the relationships between bony landmarks and landmarks which are no longer available after opening of the skull but still recognizable during the operation. It also includes descriptions of many important anatomical variants, which are important for microsurgeons when using minimal invasive modern techniques to avoid errors and complications. The book describes unknown projections for MRI and CT which may be adapted for special surgical problems. The anatomical drawings are the result of a twenty-five-year study of the topographical anatomy of the brain and the surrounding structures combined with the experience of modern microsurgery.