RT Journal Article SR Electronic T1 Left Vertebral Artery Origin from the Thyrocervical Trunk: A Unique Vascular Variant JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1155 OP 1156 VO 27 IS 5 A1 Strub, W.M. A1 Leach, J.L. A1 Tomsick, T.A. YR 2006 UL http://www.ajnr.org/content/27/5/1155.abstract AB SUMMARY: The vertebral artery normally arises from the subclavian artery, and variations in its origin have been described. We describe a unique case of the left vertebral artery arising from the thyrocervical trunk.