Fig. 1From: Trigemino-autonomic headache related to Gasperini syndromeInfarction in the right cerebellar peduncle extending toward the pontine tegmentum and trigeminal entry zone, caused by the occlusion of the right anterior inferior cerebellar artery (AICA). a axial T2-weighted image, b axial and c sagittal MPR images showing the infarction which involves the trigeminal entry zone; on images b and c the trigeminal nerve is clearly visible (arrows). d MR-angiography showing the stenosis of the basilar artery (arrow) and occlusion of the right AICA, while the left AICA is clearly visible (arrowhead)Back to article page