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AJNR - American Journal of Neuroradiology

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Increasing the Packing of Small Aneurysms with Complex-Shaped Coils: An In Vitro Study

Michel Piotin^a, Akira Iijima^a, Hajime Wada^a and Jacques Moret^a

^a From the Department of Interventional Neuroradiology, Fondation Rothschild, Paris, France

View larger version (75K): [in a new window]   FIG 1. Packing density and percentage of complex-shaped coils. The linear curve of tendency shows that the use of complex-shaped coils tends to improve the filling of the aneurysm.

View larger version (62K): [in a new window]   FIG 2. Aneurysm model (nonsubtracted lateral view) at the end of the first experiment (scenario 1) showing that both the sac and the neck are densely packed (packing attenuation, 38%).

View larger version (62K): [in a new window]   FIG 3. Aneurysm model (nonsubtracted lateral view) at the end of the fifth experiment (scenario 2) showing that both the sac (interstices inside the coil mesh, white arrowheads) and the neck (black arrow) are less packed than on Fig 1 (packing attenuation, 32%).