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Fig. 1D —Vein of Galen aneurysmal malformation in 8-month-old female infant. Two views from volume-rendered 3D RA obtained 16 months after partial embolization. Note previous area of embolization (arrows), as determined with conventional angiography, and new vessel (arrowheads) feeding aneurysmal malformation. Cut-away feature of 3D RA workstation used to locate exact site of feeding vessel enters aneurysmal malformation from the left.