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FIG 1. Number 3 aneurysm in Matrix group, 2-week implant.
A, Anteroposterior DSA of the brachiocephalic artery shows a moderately wide-necked aneurysm.
B, Anteroposterior DSA obtained immediately after embolization with Matrix coils shows near-complete occlusion of the aneurysm.
C, Anteroposterior DSA obtained 2 weeks after embolization shows marked coil compaction.
D, Hematoxylin and eosin stain; original magnification, x1.5. Coronal section obtained through the aneurysm cavity. Microcompaction and inflammation along neck are shown.
E, Hematoxylin and eosin stain; original magnification, x25. Magnification of the area shown in panel D; substantial inflammation is shown along neck.
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