RT Journal Article SR Electronic T1 Advances and Technical Standards in Neurosurgery, Vol 33 JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e17 OP e17 DO 10.3174/ajnr.A1195 VO 30 IS 1 YR 2009 UL http://www.ajnr.org/content/30/1/e17.abstract AB