Number of scans and brain involvement at first MRI and last MRI
| All | Men | Women | |||
| Classical | Non-classical | Classical | Non-classical | ||
| Number of scans, n (%) | 852 | 321 (37.7%) | 46 (5.4%) | 446 (52.3%) | 39 (4.6%) |
| Scans per patient, median (range) | 5 (1–14) | 7 (1–13) | 2 (1–12) | 6 (1–14) | 1 (1–5) |
| Patients with one scan, n (%) | 32 (21.5%) | 4 (8.9%) | 5 (45.5%) | 10 (13.7%) | 13 (65.0%) |
| Follow-up time in years, median (range) | 7.0 (0.0–13.1) | 7.9 (0.0–13.0) | 1.0 (0.0–13.0) | 9.2 (0.0–13.1) | 0.0 (0.0–11.9) |
| Numbers of scans on Intera system, n (%) | 512 (60.1%) | 187 (58.3%) | 29 (63.0%) | 275 (61.7%) | 21 (53.8%) |
| Fazekas first MRI, median (range) | 0 (0–6) | 0 (0–6) | 0 (0–3) | 0 (0–6) | 0 (0–4) |
| Fazekas last MRI, median (range) | 1 (0–6) | 1 (0–6) | 1 (0–3) | 1 (0–6) | 0 (0–4) |
| Fazekas first MRI, mean (±SD) | 1.17 (±1.62) | 1.42 (±1.97) | 1.00 (±1.10) | 1.20 (±1.56) | 0.60 (±1.05) |
| Fazekas last MRI, mean (±SD) | 1.46 (±1.84) | 2.07 (±2.37) | 1.09 (±1.04) | 1.37 (±1.63) | 0.65 (±1.04) |
| Scheltens first MRI, mean (±SD) | 4.7 (±7.3) | 6.0 (±9.3) | 3.6 (±4.8) | 4.7 (±6.4) | 2.7 (±6.1) |
| Scheltens last MRI, mean (±SD) | 7.4 (±8.8) | 10.1 (±11.2) | 5.0 (±5.4) | 7.3 (±7.6) | 2.7 (±6.0) |
| Infarctions first MRI, n (%) | 23 (15.6%) | 12 (26.7%) | 2 (18.2%) | 8 (11.3%) | 1 (5.0%) |
| Infarctions last MRI, n (%) | 42 (28.2%) | 21 (46.7%) | 3 (27.3%) | 17 (23.3%) | 1 (5.0%) |
| BAD first MRI in mm, median (range) | 3.33 (1.85–5.83) | 3.88 (2.45–5.83) | 3.29 (2.77–3.80) | 3.17 (1.99–5.55) | 3.18 (1.85–4.61) |
| BAD last MRI in mm, median (range) | 3.67 (1.85–7.25) | 4.35 (2.87–7.25) | 3.55 (3.18–4.27) | 3.54 (2.46–5.84) | 3.13 (1.85–4.61) |
Continuous variables are presented as median (range) or mean (±SD) and discrete variables as number (percentages).
BAD, basilar artery diameter.