PT - JOURNAL ARTICLE AU - Matheus, M. Gisele AU - Castillo, Mauricio TI - Imaging of Acute Bilateral Paramedian Thalamic and Mesencephalic Infarcts DP - 2003 Nov 01 TA - American Journal of Neuroradiology PG - 2005--2008 VI - 24 IP - 10 4099 - http://www.ajnr.org/content/24/10/2005.short 4100 - http://www.ajnr.org/content/24/10/2005.full SO - Am. J. Neuroradiol.2003 Nov 01; 24 AB - Summary: Thalami and midbrain arterial supply arises from many perforating blood vessels with a complex distribution for which many variations have been described. One rare variation, named the “artery of Percheron,” is a solitary arterial trunk that arises from one of the proximal segments of a posterior cerebral artery and supplies the paramedian thalami and the rostral midbrain bilaterally. Occlusion of this artery results in bilateral thalamic and mesencephalic infarctions. We describe three patients with a presumed occlusion of the artery of Percheron in whom MR imaging showed characteristic symmetrical bilateral paramedian thalamic and mesencephalic infarctions.