Artery of Percheron infarction


The AOP is a vascular anomaly wherein a single arterial branch arises from the PCA circulation to supply the midbrain and thalamus.

The AOP was first described  by the French medical scientist Gerald Percheron in 1973.

The multiple perforator beaches which usually arise from the basilar artery are replaced by beaches from this singleton brach of the posterior cerebral artery. An occlusion of this brach lead to a peculiar type of brain stem infarction with characteristic imaging findings as described.