RT Journal Article SR Electronic T1 Advances and Technical Standards in Neurosurgery. Vol. 31 JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 792 OP 793 VO 28 IS 4 YR 2007 UL http://www.ajnr.org/content/28/4/792.abstract AB