RT Journal Article SR Electronic T1 Reply: JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1206 OP 1206 DO 10.3174/ajnr.A0615 VO 28 IS 7 A1 Chacko, A.G. A1 Daniel, R.T. A1 Chacko, G. A1 Surendrababu, N.R.S. YR 2007 UL http://www.ajnr.org/content/28/7/1206.2.abstract AB