Radiographic follow-up and outcomes after flow diversion
| Characteristic | Value |
| Short term follow-up | |
| Patients with at least 1 follow-up study (n (%)) | 21 (95) |
| Time to first follow-up (months) (median (IQR; range)) | 6.0 (6.0, 8.0; 2–12) |
| Modality (n (% of those imaged)) | |
| DSA | 18 (86) |
| TOFTR MRA | 3 (14) |
| R-R classification (target aneurysm) (n (%)) | |
| 1 | 14 (67) |
| 2 | 3 (14) |
| 3 | 4 (19) |
| R-R classification (secondary aneurysm) (n (%)) | |
| 1 | 6 (86) |
| 2 | 0 (0) |
| 3 | 1 (14) |
| Long term follow-up | |
| Patients with subsequent imaging if original R-R not 1 (n (%)) | 4 (57) |
| Time to second follow-up (months) (median (IQR; range)) | 8.0 (8.3, 21.8; 8–25) |
| Change in R-R classification (target aneurysm, if R-R not 1 on initial follow-up) (n (% of those imaged)) | |
| No change (R-R grade 2 to 2) | 1 (25) |
| Grade 3 to 1 | 1 (25) |
| Grade 3 to 2 | 2 (50) |
| R-R classification (secondary aneurysm, if R-R not 1 on initial follow-up) (n (%)) | |
| 1 | 1 (100) |
| In-stent stenosis (any follow-up) – n (%) | 1 (5) |
MRA, MR angiography, R-R, Roy–Raymond classification, TOFTR, time of flight, time resolved.