RT Journal Article SR Electronic T1 “Epidural” Vertebral Venous Plexus JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 7 OP 7 VO 27 IS 1 A1 Satoru Shimizu YR 2006 UL http://www.ajnr.org/content/27/1/7.1.abstract AB