FIG 1. Subject 3, 2-week implantation.

A, DSA image obtained before embolization. Aneurysm measures 3.8 x 3 x 10 mm (width x neck x length).

B, DSA image obtained immediately after embolization shows 95% occlusion and a tiny triangular neck remnant (arrow).

C, Angiogram obtained before animal was sacrificed and 2 weeks after coil embolization shows complete occlusion.

D, Photomicrograph reveals unorganized blood filling the aneurysmal cavity. The neck of the aneurysm is covered with a thin, fibrin rim (hematoxylin-eosin stain, original magnification x 6.3).