(c) Left internal carotid injection in late arterial phase showing a PTA that supplies the anterior inferior
cerebellar arteries (AICA) and inferior vermian (arrow) and hemispheric (arrowhead) branches of posterior inferior
cerebellar arteries (PICA).
Anterior Inferior Cerebellar and Posterior Inferior
Cerebellar Arteries, November 2011, http://www.anatomyatlases.org/AnatomicVariants/ Cardiovascular/Text/Arteries/CerebellarAntPostInferior.shtml.
The admission CT was significant, with multiple bilateral cerebellar infarctions in the distribution of the anterior inferior cerebellar artery (AICA), and possibly the posterior inferior
cerebellar arteries (PICA).
The posterior inferior
cerebellar arteries arise from the vertebral arteries and supply the lateral medulla and inferior part of the cerebellum.