Dual origin of the left vertebral artery: Extracranial MRA and CTA findings

W. Oliver Tobin, Ronan Killeen, Justin A. Kinsella, Dominick J.H. McCabe

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A 48-year-old man presented with a posterior circulation stroke secondary to left lateral medullary infarction. Contrast-enhanced magnetic resonance angiography (CEMRA) revealed 40-45% intracranial left vertebral artery stenosis, likely atherosclerotic in nature. CEMRA and subsequent computed tomography angiography also identified a duplicate origin of the left vertebral artery. The importance of recognition of this rare anatomical variant, its potential contribution to stroke aetiology, and the advantage of non-invasive vascular imaging prior to catheter angiography is emphasised.

Original languageEnglish (US)
Pages (from-to)150-152
Number of pages3
JournalJournal of the neurological sciences
Issue number1-2
StatePublished - Nov 15 2010


  • Computed tomography
  • Dual origin
  • Magnetic resonance imaging
  • Vertebral artery stenosis

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology


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