PMID: 8585480Nov 1, 1995Paper

Endovascular treatment of fusiform aneurysms with stents and coils: technical feasibility in a swine model.

AJNR. American Journal of Neuroradiology
T F MassoudG R Duckwiler

Abstract

To assess the biomechanical feasibility of treating experimental fusiform aneurysms endovascularly with a combination of stents and coils. An experimental model was surgically constructed in the necks of nine swine to simulate intracranial fusiform aneurysms possessing important "perforators" or side branches. Balloon-expandable metal stents were positioned across the aneurysms in eight swine. In five of these, additional treatment was intraaneurysmal placement of detachable microcoils. Attempts were made to deposit these coils strategically away from the origin of the side branch. Stent placement was successful in seven swine but failed in one swine because of stent-aneurysm size mismatch. Two swine treated with only stents showed no significant alterations in blood filling of the aneurysm or side branch. Satisfactory coil placement (outside the stent, within the aneurysm sac, and away from the orifice of the side branch) was achieved in four of the five swine treated with stents and coils. Careful fluoroscopic monitoring and controlled coil delivery were necessary to avoid covering the sidebranch origin. These aneurysms could not be packed densely after detachment of the first coil because of the resultant radiographic overla...Continue Reading

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