DSA of the left vertebral injection, lateral (A) and anteroposterior (B) views, and a coronal CTA image (C) from case 23 demonstrate a large unpaired thalamic.

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Presentation transcript:

DSA of the left vertebral injection, lateral (A) and anteroposterior (B) views, and a coronal CTA image (C) from case 23 demonstrate a large unpaired thalamic perforating artery (arrows) arising from the proximal P1 segment supplying the bilateral thalami (... DSA of the left vertebral injection, lateral (A) and anteroposterior (B) views, and a coronal CTA image (C) from case 23 demonstrate a large unpaired thalamic perforating artery (arrows) arising from the proximal P1 segment supplying the bilateral thalami (ie, an AOP). N.A. Lazzaro et al. AJNR Am J Neuroradiol 2010;31:1283-1289 ©2010 by American Society of Neuroradiology