The artery of Percheron is a rare variant of the posterior cerebral circulation characterised by a solitary arterial trunk that supplies blood to the paramedian thalami and the rostral midbrain bilaterally.
The term is used to refer to a solitary arterial trunk that branches from one of the proximal segments of either posterior cerebral artery (PCA). It supplies blood to the paramedian thalami and the rostral midbrain bilaterally.
The artery of Percheron is named after the French neurologist Gérard Percheron, who described it in 1973.
Percheron infarct: bilateral thalamic and mesencephalic infarctions; clinically patients are often obtunded, comatose, or agitated, with associated hemiplegia or hemisensory loss