Fig. 2From: Successful recanalization for internal carotid artery occlusion with persistent primitive trigeminal artery manifesting only as ischemia of the posterior circulationPrior head MRA. Prior radiological MRA studies show a right PPA (single black arrow). This PPTA joins the middle basilar artery proximal to SCA and leads to the end of the SCA (double black arrows). Bilateral PCAs received their blood supply predominantly through the patent PCom (black arrow heads)Back to article page