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Radiology Research and Practice
Volume 2016 (2016), Article ID 2187275, 9 pages
Research Article

Morphologic and Clinical Outcome of Intracranial Aneurysms after Treatment Using Flow Diverter Devices: Mid-Term Follow-Up

1Department of Diagnostic and Interventional Neuroradiology, Eberhard Karls University, Hoppe-Seyler-Street 3, 72076 Tübingen, Germany
2Department of Neurosurgery, Eberhard Karls University, Hoppe-Seyler-Street 3, 72076 Tübingen, Germany
3Department of Neurology, Eberhard Karls University, Hoppe-Seyler-Street 3, 72076 Tübingen, Germany

Received 14 September 2015; Accepted 31 January 2016

Academic Editor: Henrique M. Lederman

Copyright © 2016 Anna-Katharina Breu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Flow diverters (FDs) are designed for the endovascular treatment of complex intracranial aneurysm configurations. From February 2009 to March 2013 28 patients (22 females, 6 males) were treated with FD; mean age was 57 years. Data, including aneurysm features, clinical presentation, history of previous bleeding, treatment, and follow-up results, are presented. Early postinterventional neurological deficits (transient: /enduring: ) appeared in 4/28 patients (14%), and early improvement of neurological symptoms was observed in 7 patients with previous restriction of cranial nerve function. The overall occlusion rate was 20/26 (77%; 59% after 3 months). 77% achieved best results according to O’Kelly-Marotta score grade D with no contrast material filling (70% of those after 3 months). In 4/6 patients who did not achieve grade D, proximal and/or distal stent overlapping ≥5 mm was not guaranteed sufficiently. During follow-up we did not detect any aneurysm recurrence or haemorrhage. In-stent stenosis emerged as the most frequent complication (4/27; 15%) followed by 2 cases of vascular obliteration (AICA/VA). In conclusion endovascular reconstruction using a FD represents a modern and effective treatment in those aneurysms that are not suitable for conventional interventional or surgical treatment. The appearance of severe complications was rare.