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Shape Modification is Common in Woven EndoBridge-Treated Intracranial Aneurysms: A Longitudinal Quantitative Analysis
J Rosskopf1, M Braun2, J Dreyhaupt3
1From the Department of Radiology (J.R., M. Beer, B.L.S.) johannes.rosskopf@uni-ulm.de.
AJNR. American Journal of Neuroradiology
|August 1, 2020
Summary
Woven EndoBridge (WEB) device shape modification is common after intracranial aneurysm treatment, with a median height reduction of 19.2% in one year. This shape change did not impact aneurysm occlusion quality.
Area of Science:
- Endovascular neurosurgery
- Medical device engineering
- Radiology
Background:
- Woven EndoBridge (WEB) device is used for endovascular treatment of intracranial aneurysms.
- WEB device shape modification has been suspected to affect aneurysm occlusion.
- Quantitative analysis of WEB device shape changes over time is needed.
Purpose of the Study:
- To quantitatively analyze Woven EndoBridge (WEB) device shape modification over time.
- To assess the association between WEB device shape modification and aneurysm occlusion results.
Main Methods:
- Retrospective analysis of 32 WEB-treated intracranial aneurysms from 30 patients.
- Cranial CT scans at baseline and follow-up (median 11.4 months).
- Semiautomated quantification of WEB device shape modification and statistical analysis using linear mixed-effects regression models.
Main Results:
- 90.6% of WEB devices showed at least 5% height reduction.
- Height reduction was significantly associated with time since intervention (P < .0001).
- Median height reduction was 19.2% at 1 year; no association found with occlusion quality, device size, rupture status, location, or reintervention.
Conclusions:
- Shape modification is a common occurrence for Woven EndoBridge (WEB) devices after intracranial aneurysm treatment.
- The degree of WEB device shape modification increases with time post-intervention.
- WEB device shape modification does not appear to influence the quality of aneurysm occlusion.
