RT Journal Article SR Electronic T1 Tumor-Volume Changes after Radiosurgery for Vestibular Schwannoma: Implications for Follow-Up MR Imaging Protocol JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A0969 A1 O.W.M. Meijer A1 E.J. Weijmans A1 D.L. Knol A1 B.J. Slotman A1 F. Barkhof A1 W.P. Vandertop A1 J.A. Castelijns YR 2008 UL http://www.ajnr.org/content/early/2008/02/22/ajnr.A0969.abstract AB