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Size distribution of symptomatic intracranial aneurysms in 224 patients
| Size (mm) | CTA-positive (n = 133) | CTA-inconclusive (n = 31)a | CTA-negative (n = 60)b |
|---|---|---|---|
| < 5 | 47 | 12 | 4 |
| 5–9 | 70 | 4 | |
| 10–14 | 14 | 3 | |
| 15–24 | 1 | 1 | |
| ≥25 | 1 |
a11 patients had no proven aneurysm.
bFive patients had false-negative CTA, in four of whom a ruptured aneurysm was diagnosed on repeat angiography.
