RT Journal Article SR Electronic T1 Medical Imaging Physics, 4th ed. Wiley-Liss, New York. 2002 JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1023 OP 1024 VO 24 IS 5 YR 2003 UL http://www.ajnr.org/content/24/5/1023.abstract AB