Morphological Factors affecting Coil-Only Embolization of Small Unruptured Aneurysms

Abstract: Objective  When small unruptured aneurysms (SUA) are embolized by coils, manipulation of the microcatheter and coil is limited because of their small size. Previous studies suggested that the morphology of the artery and aneurysm is important. In the present study, we clarified the morphol...

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Bibliographic Details
Published in:Asian journal of neurosurgery 2023-03, Vol.18 (1), p.125-131
Main Authors: Tenjin, Hiroshi, Saito, Osamu, Matsumoto, Kuniaki, Asai, Akio
Format: Article
Language:English
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Summary:Abstract: Objective  When small unruptured aneurysms (SUA) are embolized by coils, manipulation of the microcatheter and coil is limited because of their small size. Previous studies suggested that the morphology of the artery and aneurysm is important. In the present study, we clarified the morphological factors affecting coil-only embolization of SUA. Patients and Methods  We retrospectively identified 17 patients who underwent embolization for unruptured aneurysm with a maximum diameter less than 5 mm. We investigated the following: (1) the relationships among dome/neck ratio (D/N), height/neck ratio (H/N), height/dome ratio (H/D), projection of aneurysm-parent artery, and adverse events, (2) immediate and late occlusion, and (3) number of coils. Results  (1) Adverse events developed in three cases in which the H/D was smaller than 1 ( p  
ISSN:1793-5482
2248-9614
DOI:10.1055/s-0043-1763528