Abstract
Background: Stent-assisted coiling is an effective method of treating intracranial aneurysms. The aim of the study was to assess the safety and efficacy of the new Accero stent for the treatment of intracranial aneurysms. Materials and Methods: It was a retrospective, single-center study. Eighteen unruptured intracranial aneurysms were treated using the stent-assisted coiling method with the Accero stent. Patient demographics, aneurysm characteristics, procedural parameters, grade of occlusion, complications, and clinical results were analyzed. Follow-up magnetic resonance (MR) was performed 6 months after intervention. Results: Seventeen patients with 18 incidental unruptured aneurysms were electively treated with coiling and the Accero stent. The aneurysms were located on internal carotid artery (ICA), middle cerebral artery (MCA) and basilar artery (BA). All stents were deployed successfully. Immediate complete occlusion rate Raymond-Roy occlusion classification (RROC) class I was achieved in 13 cases and class II in 4 cases. Complications occurred in 2/17 treatments and included guidewire stent perforation with subarachnoid hemorrhage (SAH) and stent deformation. Vascular spasm in the subarachnoid hemorrhage (SAH) patient subsided before discharge. Ninety days after intervention, the modified Rankin Scale (mRS) value was 0. RROC class I was observed in 88.23% of cases in follow-up. Conclusion: The Accero stent provides excellent support for coil mass. It constitutes an efficacious device with good initial occlusion rate for treating wide-necked unruptured intracranial aneurysms.
Highlights
Endovascular coiling therapy and stent-assisted coiling (SAC) is an alternative to open neurosurgical treatment and constitutes a well-established modality for the treatment of intracranial aneurysms [1,2,3,4]
Stents were designed for broad-necked aneurysms, but wide-necked aneurysms at arterial bifurcation and large curves, e.g., in the internal carotid artery syphon, constitute the most difficult challenges for them
The goal of this preliminary report was to assess the feasibility, safety, and effectiveness of the new Accero stent (Acandis GmbH, Pforzheim, Germany) and to analyze short term follow-up when it is used for treating wide-necked intracranial aneurysms
Summary
Endovascular coiling therapy and stent-assisted coiling (SAC) is an alternative to open neurosurgical treatment and constitutes a well-established modality for the treatment of intracranial aneurysms [1,2,3,4]. Stents were designed for broad-necked aneurysms, but wide-necked aneurysms at arterial bifurcation and large curves, e.g., in the internal carotid artery syphon, constitute the most difficult challenges for them. The goal of this preliminary report was to assess the feasibility, safety, and effectiveness of the new Accero stent (Acandis GmbH, Pforzheim, Germany) and to analyze short term follow-up when it is used for treating wide-necked intracranial aneurysms. Eighteen unruptured intracranial aneurysms were treated using the stent-assisted coiling method with the Accero stent. Conclusion: The Accero stent provides excellent support for coil mass It constitutes an efficacious device with good initial occlusion rate for treating wide-necked unruptured intracranial aneurysms
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