Fig. 1From: Co-existence of persistent primitive trigeminal artery and another primitive carotid-basilar anastomosis associated with segmental agenesis of the ipsilateral internal carotid artery: a case reportMagnetic resonance imaging. Axial T2-weighted magnetic resonance imaging showing the right primitive trigeminal artery, a flow void (arrow) coursing postero-laterally between the dorsum sella and the cisternal portion of the trigeminal nerve (arrowhead)Back to article page