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Abstract

Flow dynamics of lateral carotid artery aneurysms and their effects on coils and balloons: an experimental study in dogs.

V B Graves, C M Strother, C R Partington and A Rappe
American Journal of Neuroradiology January 1992, 13 (1) 189-196;
V B Graves
Department of Radiology, University of Wisconsin, Madison 53792.
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C M Strother
Department of Radiology, University of Wisconsin, Madison 53792.
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C R Partington
Department of Radiology, University of Wisconsin, Madison 53792.
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A Rappe
Department of Radiology, University of Wisconsin, Madison 53792.
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Abstract

PURPOSE To investigate the hemodynamic characteristics of lateral carotid artery aneurysms in a canine model and to determine their influence on coils and balloons.

MATERIALS AND METHODS Forty aneurysms were created in fourteen dogs and their hemodynamic characteristics and influence on coils and balloons were evaluated with angiography and color Doppler pre- and postplacement. Twenty aneurysms were treated with coils, eight with balloons, and 12 aneurysms served as controls.

RESULTS The aneurysms demonstrated three distinct zones of flow: 1) an inflow zone entering at the distal aspect of the aneurysm ostium, 2) an outflow zone exiting at the proximal ostium, and 3) a central slow flow vortex. The inflow zone is a determining factor in the placement and stability of coils and balloons placed within the aneurysm and in the thrombosis of an aneurysm. The force of the inflow is considerable and can alter the shape of coils and displace both coils and balloons positioned within the aneurysm.

CONCLUSIONS Coils and balloons need to be of shapes and sizes that do not conform to the inflow and outflow zones. Filling the aneurysm and blocking or displacing the inflow zone can produce thrombosis of an aneurysm with preservation of the parent artery.

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American Journal of Neuroradiology
Vol. 13, Issue 1
1 Jan 1992
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Cite this article
V B Graves, C M Strother, C R Partington, A Rappe
Flow dynamics of lateral carotid artery aneurysms and their effects on coils and balloons: an experimental study in dogs.
American Journal of Neuroradiology Jan 1992, 13 (1) 189-196;

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Flow dynamics of lateral carotid artery aneurysms and their effects on coils and balloons: an experimental study in dogs.
V B Graves, C M Strother, C R Partington, A Rappe
American Journal of Neuroradiology Jan 1992, 13 (1) 189-196;
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Print ISSN: 0195-6108 Online ISSN: 1936-959X

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