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FIG 2. Subject 8, aneurysm packed with collagen coil (10-week sample).
A, DSA image, showing aneurysm cavity.
B, Radiograph, showing collagen coils after implantation. Loose packing was present in the aneurysm cavity (long arrow) with a loop of coil present in the parent artery distal to the aneurysm cavity (short arrow).
C, DSA image, immediately after coil implantation, demonstrating large amount of residual flow in the body of the aneurysm cavity. No compromise of flow existed in the parent artery distal to the aneurysm cavity.
D, DSA image, 10 weeks after implantation, showing interval progressive aneurysm occlusion, with no residual flow in the aneurysm cavity and a triangular neck remnant (long arrow). Flow remained unimpeded in the region of the coils in the distal parent artery (short arrow).
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