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Aenis, M., et al. (1997) Modeling of flow in a straight stented and nonstented side wall aneurysm model. Journal of Biomechanical Engineering, 119, 206-212. doi:10.1115/1.2796081

has been cited by the following article:

  • TITLE: Enterprise stent-within-stent embolization of a basilar artery perforator aneurysm

    AUTHORS: Eric M. Deshaies, Walter Jacobsen, Satish Krishnamurthy

    KEYWORDS: Aneurysm; Basilar, Enterprise; Stent; Subara- chnoid Hemorrhage

    JOURNAL NAME: World Journal of Neuroscience, Vol.1 No.3, November 17, 2011

    ABSTRACT: Objective and Importance—Vertebrobasilar artery aneurysms can be very challenging to treat and are preferentially dealt with using endovascular tech-niques, since they are associated with lower risk than surgical clipping. Small aneurysms located on perfo-rating arteries can pose problems though, as their dimensions may not be favorable for coiling and leave the endovascular surgeon without many options. We present a basilar perforating artery aneurysm that was successfully embolized using a stent-within-stent technique. Clinical Presentation—A 47 year old fe-male presented with a Hunt-Hess 3, Fisher Grade-3 subarachnoid hemorrhage with blood in the pre-pontine cistern. Initial imaging (CT angiogram and digital subtraction angiography) did not reveal an aneurysm. Follow-up angiography on post-bleed day eight demonstrated a three-millimeter basilar perforating artery aneurysm. After an unsuccessful coiling attempt a closed-cell stent-within-stent tech-nique was used to divert flow away from the aneu-rysm neck to induce aneurysm thrombosis. Interven-tion (or Technique)—Multiple attempts were made to access and stabilize a microcatheter in the small basilar perforator artery aneurysm in order to de-liver coils for endovascular embolization; this could not be done safely. Therefore a closed-cell 4.5 × 22 mm Enterprise stent (Cordis Neurovascular, Inc., Miami Lakes, Florida) was deployed in the basilar artery across the origin of the perforator aneurysm in order for the stent tines to divert flow away from the aneurysm neck and induce thrombosis. Persistant brisk flow within the aneurysm continued however, and a second closedcell 4.5 × 22 mm Enterprise stent was placed within the first one to increase the stent metal surface area across the aneurysm neck to further reduce flow into the aneurysm. Subsequently, angiography demonstrated stagnant blood flow in the aneurysm dome and the aneurysm spontaneously thrombosed, sparing all associated vessels. Conclu-sion—Stent-within-stent technique should be consid-ered as a possible endovascular treatment option for small side-wall and perforator artery aneurysms that can’t be safely treated with coils or embolic agents.