title: Increasing the packing of small aneurysms with complex-shaped coils: an in vitro study.
abstract: 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.
authors.affiliation: Department of Interventional Neuroradiology, Fondation Rothschild, Paris, France.
authors.forename: Michel
authors.initials: M
authors.lastname: Piotin
authors.forename: Akira
authors.initials: A
authors.lastname: Iijima
authors.forename: Hajime
authors.initials: H
authors.lastname: Wada
authors.forename: Jacques
authors.initials: J
authors.lastname: Moret
mesh_terms: D017542:Aneurysm, Ruptured / Q000628:therapy; D001672:Biocompatible Materials / Q000627:therapeutic use; D004621:Embolization, Therapeutic / Q000379:methods*; D006801:Humans; D002532:Intracranial Aneurysm / Q000628:therapy*; D010984:Platinum / Q000627:therapeutic use
chemical_list: D001672:Biocompatible Materials; D010984:Platinum