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FIG 6. Anteroposterior projection left vertebral catheter injection digital subtraction angiogram shows obliteration of the vein of Galen malformation. Restoration of normal antegrade flow from the basilar artery to the distal posterior cerebral arterial territories has been achieved (arrowheads). Note the hypertrophied left P1 segment of the posterior cerebral artery and left posterior communicating artery (arrow), resulting from the previous hemodynamic alteration and vascular steal induced by the malformation (see Fig 1).
