A prospective long-term follow-up study was conducted to evaluate the results of gamma knife radiosurgery (GKRS) for vestibular schwannoma (VS) patients. Both axial and volumetric measurements are used to determine tumor size during follow-up.
Department of Otorhinolaryngology, Head and Neck Surgery, Radboud University Nijmegen Medical Center, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands. f.timmer@kno.umcn.nl