Detection of aneurysms with echo contrast enhancement: effect of size
| Size (mm) | DSA | Power Doppler (unenhanced) | Power Doppler echo contrast enhanced (additional No detected) |
Power Doppler (total No detected) |
| 2–3.9 | 16 | 5 (31) | 1 | 6 (38) |
| 4–5.9 | 26 | 7 (27) | 4 | 11 (42) |
| 6–7.9 | 24 | 5 (21) | 7 | 12 (50) |
| 8–9.9 | 8 | 4 (50) | 2 | 6 (75) |
| 10–11.9 | 7 | 5 (71) | 2 | 7 (100) |
| 12–13.9 | 3 | 1 (33) | 2 | 3 (100) |
| 14–15.9 | 0 | 0 | 0 | 0 |
| 16–17.9 | 1 | 0 | 1 | 1 (100) |
| 18–19.9 | 0 | 0 | 0 | 0 |
| 20–21.9 | 0 | 0 | 0 | 0 |
| 24–25.9 | 1 | 0 | 1 | 1 (100) |
| Total | 86 | 27 (31) | 20 | 47 (55) |
Numbers in parentheses represent percentage of aneurysms seen by transcranial power Doppler.