American Journal of Neuroradiology 24:1446-1448, August 2003
© 2003 American Society of Neuroradiology
Technical Note
INTERVENTIONAL
Increasing the Packing of Small Aneurysms with Complex-Shaped Coils: An In Vitro Study
a From the Department of Interventional Neuroradiology, Fondation Rothschild, Paris, France
Address correspondence and reprint requests to Jacques Moret, M.D., Service de Neuroradiologie Interventionnelle, Hôpital de la Fondation Ophtalmologique Adolphe de Rothschild, 75940 Paris Cedex 19, France
Summary: Nine embolization experiments of a silicone aneurysm model were conducted by using helical and complex-shaped coils. Coils were introduced up to the point when the adjunct of a supplementary coil caused protrusion into the parent vessel. Packing ratios (volume of coils-aneurysm volume) ranged between 31% and 38%. Optimal packing was achieved with complex-shaped coils used in a concentric fashion. The complex-shaped coils allowed a better aneurysm filling than did helical coils.
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