RT Journal Article SR Electronic T1 Bilateral Arch Origin of the Vertebral Arteries JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 455 OP 458 VO 23 IS 3 A1 Sait Albayram A1 Philippe Gailloud A1 Bruce A. Wasserman YR 2002 UL http://www.ajnr.org/content/23/3/455.abstract AB Summary: A case of bilateral anomalous origins of the vertebral arteries (VAs) is reported. Both VAs arose directly from the aortic arch between the left common carotid artery and the left subclavian artery. The possible embryologic mechanism and clinical importance of this previously unreported variant are reviewed.