Changes in angiographic outcomes in the stent- and nonstent-assisted coil embolization groups at 2 years postcoil embolization
| Stent-Assisted (%) | Nonstent-Assisted (%) | P Value | ||
|---|---|---|---|---|
| Total (n = 126) | Stable | 16/40 (40.0) | 34/86 (39.5) | .895a |
| Improved | 17/40 (42.5) | 34/86 (39.5) | ||
| Recanalized | 7/40 (17.5) | 18/86 (21.0) | ||
| Sidewall (n = 82) | Improved | 16/29 (55.2) | 30/53 (55.6) | 1.000b |
| Recanalized | 3/29 (10.3) | 5/53 (9.4) | 1.000b | |
| Bifurcation (n = 44) | Improved | 1/11 (9.1) | 4/33 (12.1) | 1.000b |
| Recanalized | 4/11 (36.4) | 13/33 (39.4) | 1.000b |
Note:—Stable = no change in coil configuration, obliteration grade, or contrast filling; improved = progressive occlusion or involution in the neck remnant or contrast filling in aneurysm; recanalized = aneurysm recurrence evident by neck growth, coil compaction, coil degradation, or new sac formation.
↵a χ2 test.
↵b Fisher exact test.