• Minim Invasive Neurosurg · Aug 2009

    Technique for shaping microcatheter tips in coil embolization of paraclinoid aneurysms using full-scale volume rendering images of 3D rotational angiography.

    • S Toyota, Y Fujimoto, F Iwamoto, A Wakayama, and T Yoshimine.
    • Center for Endovascular Neurosurgery, Osaka Neurological Institute, Toyonaka, Osaka, Japan. stshto@aol.com
    • Minim Invasive Neurosurg. 2009 Aug 1; 52 (4): 201-3.

    IntroductionIn coil embolization of paraclinoid aneurysms, it is sometimes difficult to introduce and stabilize microcatheter tips in the aneurysms. We report a new technique for shaping microcatheter tips in the coil embolization of paraclinoid aneurysms.MethodsFrom May 2007 to May 2008, this new technique was applied to 10 paraclinoid aneurysms undergoing coil embolization. Before coil embolization, 3D rotational angiography was performed, and volume-rendering images were reconstructed. Vinyl-coated handicraft wire was shaped 3-dimensionally to fit full-scale volume-rendering images on the monitor, from the C5 portion of the internal carotid artery to the center of the dome of the aneurysm from various angles. The microcatheter tip was then shaped with steam to fit the vinyl-coated wire. Thereafter, the microcatheter tip was introduced into the aneurysm and coil embolization was performed.ResultsMicrocatheter tips could be easily shaped and could be introduced smoothly into aneurysms, and were stable during coil embolization.ConclusionThis technique is feasible for shaping microcatheter tips precisely for coil embolization of paraclinoid aneurysms.Georg Thieme Verlag KG Stuttgart * New York.

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