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BMJ Publishing Group, Journal of NeuroInterventional Surgery, 9(7), p. 676-681, 2014

DOI: 10.1136/neurintsurg-2014-011289

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Aneurysm permeability following coil embolization: packing density and coil distribution

Journal article published in 2014 by Ju-Yu Chueh, Srinivasan Vedantham ORCID, Ajay K. Wakhloo, Sarena L. Carniato, Ajit S. Puri, Conrad Bzura, Spencer Coffin, Alexei A. Bogdanov, Matthew J. Gounis
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

BACKGROUND: Rates of durable aneurysm occlusion following coil embolization vary widely, and a better understanding of coil mass mechanics is desired. The goal of this study is to evaluate the impact of packing density and coil uniformity on aneurysm permeability. METHODS: Aneurysm models were coiled using either Guglielmi detachable coils or Target coils. The permeability was assessed by taking the ratio of microspheres passing through the coil mass to those in the working fluid. Aneurysms containing coil masses were sectioned for image analysis to determine surface area fraction and coil uniformity. RESULTS: All aneurysms were coiled to a packing density of at least 27%. Packing density, surface area fraction of the dome and neck, and uniformity of the dome were significantly correlated (p