FIG 5. Subject 15, 24-week implantation.

A, DSA image obtained before embolization. The aneurysm is 4.1 x 4.5 x 6.5 mm (width x neck size x length).

B, DSA image obtained immediately after embolization depicts 95% occlusion.

C, DSA image obtained before euthanasia and 6 months after coil implantation demonstrates persistent flow at the aneurysmal neck but no change in the percentage occlusion.

D, The aneurysm is filled with organized tissue (hematoxylin-eosin stain, original magnification x8.3).