RT Journal Article SR Electronic T1 Catheter Navigation within the Subarachnoid Space JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1124 OP 1124 VO 25 IS 6 A1 Schumacher, Martin YR 2004 UL http://www.ajnr.org/content/25/6/1124.abstract AB