AI Summary & Key Takeaways
AI InsightMost of the an-gular remodeling occurs on the side that had a more acute angle before stent deployment.
📌 3 Key Takeaways
Abstract
PURPOSE We aimed to investigate the angular changes after Y-stenting of the basilar bifurcation aneurysms.METHODS A total of 19 patients (age range, 27-80 years; mean age, 52.5 years) underwent Y-stent coiling for basilar bifurcation aneurysm. Three vascular angles (?, ?1, ?2) were measured in the anteroposterior plane. ?1 and ?2 represented the angles between the basilar artery and the proximal P1 segments of the right and left posterior cerebral arteries, respectively. ? represented the complementary angle between the ?1 and ?2 angles. Angles were measured before and after stent deployment. Diameters of the basilar artery and P2 segment of the posterior cerebral artery were measured at both sides. Correlation between vascular diameter and angular change of the basilar bifurcation was investi-gated.RESULTS Statistically significant ?, ?1, and ?2 angle changes were found after stent deployment (P < 0.001). There was no statistically significant relationship between the diameter of the basilar artery and the ?, ?1, ?2 angle changes (P > 0.05). There was no statistically significant relationship between the diameter of the posterior cerebral artery and the ? angle change (P > 0.05). We found a statistically significant inverse correlation between pre-stent ? angle and post-stent angle change (right side, P = 0.008; left side, P < 0.001).CONCLUSION Y-stenting narrows the effective neck and straightens the vascular bifurcation angle. Most of the an-gular remodeling occurs on the side that had a more acute angle before stent deployment.