title: Letter. "Corrosion" of tungsten spirals. A disturbing finding.
abstract: Very long-term (more than 30 months after treatment) skull plain films of patients treated with Mechanical Detachable Spirals "MDS" (tungsten) for intracranial aneurysm or dural fistula by venous approach, showed a decreasing level of radiopacity of the spirals suggesting that this material was resorbing with time. To date, all the aneurysms selectively treated with "MDS" which were followed-up by angiography more than 30 months after treatment (three cases) showed recanalization. The recanalization was proportional to degree of the "corrosion".
authors.affiliation: Service de Neuroradiologie Interventionnelle, Fondation Ophtalmologique Adolphe de Rothschild; Paris, France - moretnri@fo-rothschild-fr.
authors.forename: A
authors.initials: A
authors.lastname: Weill
authors.forename: V
authors.initials: V
authors.lastname: Ducros
authors.forename: C
authors.initials: C
authors.lastname: Cognard
authors.forename: M
authors.initials: M
authors.lastname: Piotin
authors.forename: J
authors.initials: J
authors.lastname: Moret