Radiosurgery is a rapidly developing form of minimally invasive neurosurgery. Selected papers from the first meeting of the International Stereotactic Radiosurgery Society in Stockholm, June 1993, reflect current multidisciplinary approaches to difficult intracranial neurosurgical problems. Neurosurgeons, radiotherapists, oncologists, radiobiologists, physicists and representatives of several other clinical disciplines inform about the state-of-the-art of radiosurgical treatment of a multitude of intracranial problems such as arteriovenous malformations, pituitary and pineal tumors, vestibular schwannomas as well as metastatic brain tumors and gliomas.