FIG 3. Subject 13, 12-week implantation.

A, DSA image obtained before embolization. The aneurysm is 3.6 x 3.9 x 4.1 mm (width x neck size x length).

B, DSA image obtained immediately after embolization depicts 100% occlusion.

C, DSA image obtained before euthanasia and 12 weeks after coil implantation shows no change.

D, Photomicrograph shows that the aneurysmal cavity is filled with coils and well-organized tissue, with no residual thrombus (hematoxylin-eosin stain, original magnification x12.5). Minimal tissue thickness is present over the coils (arrows).