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CT angiograms showing a residual lumen within a large partially thrombosed fusiform aneurysm of the middle cerebral artery. Follow-up CTA (a) was performed 4 months and (b) 6 months after SFD (arrows) placement. The second follow-up study shows enlargement of the residual aneurysm lumen (arrow heads) and was performed after a new haemorrhage (not shown).
