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Research ArticleINTERVENTIONAL

A Collagen-Based Coil for Embolization of Saccular Aneurysms in a New Zealand White Rabbit Model

David F. Kallmes, Naomi H. Fujiwara, Debbie Yuen, Daying Dai and Shu-Tung Li
American Journal of Neuroradiology April 2003, 24 (4) 591-596;
David F. Kallmes
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Naomi H. Fujiwara
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Debbie Yuen
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Daying Dai
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Shu-Tung Li
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Article Figures & Data

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  • Fig 1.
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    Fig 1.

    Subject 1, aneurysm packed with collagen-based coil (2-week sample).

    A, DSA image, showing aneurysm cavity.

    B, Radiograph, showing collagen coils after implantation (arrow). Radiopaque sizing markers range from 2 mm to 6 mm in diameter.

    C, DSA image, immediately after coil implantation, demonstrating residual flow at the neck (short arrow) and in the body (long arrow) of the aneurysm cavity.

    D, DSA image, 2 weeks after implantation, showing interval progressive aneurysm occlusion, with no residual flow in the aneurysm cavity.

  • Fig 2.
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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).

  • Fig 3.
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    Fig 3.

    Subject 3, aneurysm packed with collagen coil (2-week sample).

    A, Histologic specimen showing the neck of the aneurysm covered by a thick layer of tissue consisting of nucleated cells (arrows). (Hematoxylin and eosin stain, original magnification ×40.)

    B, Histologic speciment showing dense blue staining indicates collagen deposition within the aneurysm cavity. Vascular channels are also present. (Trichrome stain, original magnification ×100.).

  • Fig 4.
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    Fig 4.

    Subject 7, aneurysms packed with collagen-based coil (10-week sample). Histologic specimen showing the aneurysm cavity is filled with dense matrix and spindle cells. (Hematoxylin and eosin stain, original magnification ×20.).

  • Fig 5.
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    Fig 5.

    Subject 5, aneurysms packed with platinum coil (2-week sample). Histologic specimen showing the aneurysm cavity is filled with unorganized thrombus. The thrombus in the dome is laminated, suggesting ongoing turnover of unorganized thrombus. (Hematoxylin and eosin stain, original magnification ×20.).

  • Fig 6.
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    Fig 6.

    Subject 12, aneurysm packed with platinum coil (10-week sample). Histologic specimen showing the aneurysm cavity remains nearly completely filled with unorganized thrombus, with a small amount of loose matrix along the periphery (arrows). (Hematoxylin and eosin stain, original magnification ×20.).

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American Journal of Neuroradiology: 24 (4)
American Journal of Neuroradiology
Vol. 24, Issue 4
1 Apr 2003
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A Collagen-Based Coil for Embolization of Saccular Aneurysms in a New Zealand White Rabbit Model
David F. Kallmes, Naomi H. Fujiwara, Debbie Yuen, Daying Dai, Shu-Tung Li
American Journal of Neuroradiology Apr 2003, 24 (4) 591-596;

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A Collagen-Based Coil for Embolization of Saccular Aneurysms in a New Zealand White Rabbit Model
David F. Kallmes, Naomi H. Fujiwara, Debbie Yuen, Daying Dai, Shu-Tung Li
American Journal of Neuroradiology Apr 2003, 24 (4) 591-596;
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  • Embolization of intracranial aneurysms with second-generation Matrix-2 detachable coils: mid-term and long-term results
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  • In Vivo Experimental Intracranial Aneurysm Models: A Systematic Review
  • Intrinsic Pathway-Mediated Apoptosis in Elastase-Induced Aneurysms in Rabbits
  • Endovascular Histologic Effects of Ultrathin Gold- or Vitronectin-Coated Platinum Aneurysm Coils in a Rodent Arterial Occlusion Model: A Preliminary Investigation
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