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FIG 1. Double-lumen microcatheter placed in the silicone-made aneurysm. A small 1.7F microcatheter system was used for the injection of Onyx (black arrow indicates direction of flow), and a large 2.7F microcatheter system was used for the injection of saline to flush the stagnant DMSO in the aneurysmal sac (white arrows indicate direction of flow)
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