RT Journal Article SR Electronic T1 Medical Effects of Ionizing Radiation, 3rd ed JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP e30 OP e30 DO 10.3174/ajnr.A1289 VO 30 IS 2 YR 2009 UL http://www.ajnr.org/content/30/2/e30.abstract AB