Preoperative clinical and imaging characteristics associated with aneurysm recurrence after stent-assisted coil embolization

Motivation: In this retrospective observational cohort study, we found that both CAWE pattern and aspect ratio were independent predictors of aneurysm recurrence after stent-assisted coil embolization. Goal(s): To explore the baseline clinical and imaging characteristics which can predict aneurysm recurrence after stent-assisted coil embolization. Approach: 3D high-resolution MRI vessel wall imagingResults: Among the 155 patients, 26 patients (16.7%) got aneurysm recurrence after stent-assisted coil embolization during the 2-year follow-up. Multivariate logistic regression analysis revealed that the CAWE pattern (OR 3.87, 95% CI 1.2–10.4, p=0.02) and aspect ratio (OR 2.1, 95% CI 0.6-4.2, p=0.03) were independently associated with aneurysm recurrence after stent-assisted coil embolization. Impact: If validated in future larger-scale studies, preoperative imaging characteristics, especially vessel wall enhancement patterns on 3D HR-VWI could be a potential tool for identifying patients at elevated risk of recurrence after stent-assisted coil embolization.