Table 4:
Comparison of correlation between Silent MRA and TOF-MRA from the viewpoint of intra-aneurysmal thrombosis after flow-diverter device placement
| Intra-Aneurysmal Thrombosis (+) (n = 13) | Intra-Aneurysmal Thrombosis (−) (n = 65) | P Value | |
|---|---|---|---|
| Location (paraclinoid segment/cavernous segment) | 2:11 | 63:2 | <.01 |
| Aneurysmal size (mean) (range) (mm) | 21.7 ± 5.3 (12.6–32.5) | 13.4 ± 4.4 (8.1–28.7) | <.01 |
| Aneurysmal neck diameter (mean) (range) (mm) | 7.8 ± 3.1 (2.8–15.3) | 6.3 ± 1.9 (3.3–13.9) | <.05 |
| Additional coiling (No.) (%) | 2 (15.4%) | 37 (56.9%) | <.01 |
| Pipeline diameter (mean) (range) (mm) | 4.21 ± 0.5 (3–5) | 4.23 ± 0.6 (3–5) | .91 |
| Pipeline length (mean) (range) (mm) | 27.5 ± 7.2 (18–35) | 20.6 ± 5.4 (16–35) | <.01 |
| Silent MRA score (mean) | 3.5 ± 0.5 | 3.1 ± 0.7 | .10 |
| TOF-MRA score (mean) | 2.0 ± 0.8 | 2.3 ± 0.8 | .20 |
Note:—+ indicates present; −, absent.