Procedural Complications and Factors Influencing Immediate Angiographic Results after Endovascular Treatment of Small (<5 mm) Ruptured Intracranial Aneurysms

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With advances in neurointerventional device technology and increased experience with aneurysm embolization, endovascular treatment (EVT) has become a widely accepted modality to treat intracranial aneurysms (IAs) [1]. During EVT of IAs, aneurysms are packed as densely as possible, which makes it exceedingly difficult to implant coils while ensuring safety and complete occlusion [2,3]. However, there appears to be a paradoxical challenge for small ruptured aneurysms (SRAs, <5 mm in size) to strictly follow this principle due to appreciable risk―more specifically, high rates of both intraprocedural rupture and thromboembolic events [4-6].

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