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FIG 3. Number 15 aneurysm in HydroCoil group, 6-week implant.
A, Anteroposterior DSA of the brachiocephalic artery shows a wide-necked aneurysm.
B, Anteroposterior DSA obtained immediately after embolization with HydroCoils shows the aneurysm is nearly completely occluded.
C, Anteroposterior DSA obtained 2 weeks after embolization shows the aneurysm remaining stable.
D, Hematoxylin and eosin stain; original magnification, x1.1. Coronal section obtained through the aneurysm cavity. No substantial inflammatory response is present. Microcompaction is absent. A small part of persistent unorganized thrombus is shown in the aneurysm dome.
E, Hematoxylin and eosin stain; original magnification, x10. Magnification of the area shown in panel D. Cellular fibrous tissue is shown across the neck.
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