Fig. 2From: 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 angiography. Stereoscopic images of 3D time-of-flight magnetic resonance angiography showing segmental agenesis of the right internal carotid artery (ICA). The ipsilateral primitive trigeminal artery supplies the distal segments of the ICA and the dysplastic ipsilateral vertebral artery (VA). The arrow indicates the VA unionBack to article page