Endovascular Treatment of Intracranial Wide-Necked Aneurysms Using Three-Dimensional Coils: Predictors of Immediate Anatomic and Clinical Results

Graph shows percentage of aneurysms according to degree of angiographic aneurysmal occlusion at completion of the initial endovascular treatment, in group A ([dark gray bars] aneurysms with a neck ≤ 4 mm) and group B ([medium gray bars] aneurysms with a neck >4 mm). Degree of angiographic occlusion was not significantly different between the two groups (P = .696).

Graph shows percentage of completely occluded aneurysms according to sac size at completion of the initial endovascular treatment in group A (neck ≤ 4 mm) and group B (neck >4 mm). Black bars indicate sac size <5 mm; dark gray bars, sac size 5–10 mm; medium gray bars, sac size 10–15 mm; light gray bars, sac size 15–25 mm.

Graph shows percentage of completely occluded aneurysms according to sac-to-neck size ratio at completion of the initial endovascular treatment in group A (neck ≤ 4 mm) and group B (neck >4 mm). Dark gray bars indicate ratio ≥3; medium gray bars, ratio 1.5–3; light gray bars, ratio <1.5.

Graph shows the mean percentage of volumic aneurysmal occlusion according to degree of angiographic occlusion at completion of the initial endovascular treatment in group A (neck ≤ 4 mm) and group B (neck >4 mm). Percentage of volumic occlusion was not significantly different between the two groups (P = .247). Dark gray bars indicate complete occlusion; medium gray bars, near complete occlusion; light gray bars, incomplete occlusion.

Graph shows the mean percentage of volumic aneurysmal occlusion according to sac size at completion of the initial endovascular treatment in group A (neck ≤ 4 mm) and group B (neck >4 mm). Black bars indicate sac size <5 mm; dark gray bars, sac size 5–10 mm; medium gray bars, sac size 10–15 mm; light gray bars, sac size 15–20 mm.