Patient demographics and lesion characteristics
| Positive for Steno-Occlusive Lesion | Negative for Steno-Occlusive Lesion | All | |||
|---|---|---|---|---|---|
| Internal Test Set | External Test Set | Subtotal | |||
| Number of patients | 30 | 30 | 60 | 78 | 138 |
| Age, year (range)a | 58 (28–78) | 58 (38–80) | 58 (28–80) | 58 (29–84) | 58 (28–84) |
| Sex (female ratio)a | 18 (0.60) | 13 (0.43) | 31 (0.52) | 38 (0.49) | 69 (0.50) |
| Proportion of 3T | 0.83 | 0.77 | 0.80 | ||
| Underlying causes | |||||
| Atherosclerosis | 26 | 27 | 53 | ||
| Moyamoya disease | 3 | 3 | 6 | ||
| Dissection | 1 | 0 | 1 | ||
| Number of lesions | 67 | 48 | 115 | ||
| 1 | 12 | 21 | 33 | ||
| 2 | 9 | 3 | 12 | ||
| 3 | 2 | 3 | 5 | ||
| 4 | 5 | 3 | 8 | ||
| 5 | 1 | 0 | 1 | ||
| 6 | 1 | 0 | 1 | ||
| Lesion laterality | |||||
| Right | 30 | 21 | 51 | ||
| Left | 35 | 26 | 61 | ||
| BA | 2 | 1 | 3 | ||
| Lesion segment | |||||
| Anterior | 55 | 36 | 91 | ||
| ACA | 15 | 2 | 17 | ||
| MCA | 27 | 22 | 49 | ||
| Distal ICA | 13 | 12 | 25 | ||
| Posterior | 12 | 12 | 24 | ||
| VA | 4 | 6 | 10 | ||
| BA | 2 | 1 | 3 | ||
| PCA | 6 | 5 | 11 | ||
Note:—VA indicates vertebral artery; BA, basilar artery; ACA, anterior cerebral artery; PCA, posterior cerebral artery.
↵a Numbers in parentheses are interquartile ranges or percentages.