Table 4:
Peak systolic and diastolic velocities and synchronous bidirectional flow in the patients with Chiari I, controls, and postoperative patients
| Peak Systolic Velocity (cm/s) | Peak Diastolic Velocity (cm/s) | Magnitude of Bidirectional Flow (cm/s) | Duration of Bidirectional Flow (sec) | |
|---|---|---|---|---|
| Patients with Chiari I | ||||
| 1 | 12.1 | 10.9 | 7.2 | 0.24 |
| 2 | 11.9 | 11.8 | 7.6 | 0.30 |
| 3 | 11.5 | 11.4 | 7.5 | 0.22 |
| 4 | 11.4 | 8.8 | 6.0 | 0.38 |
| 5 | 9.4 | 8.0 | 5.4 | 0.24 |
| 6 | 7.7 | 7.6 | 4.9 | 0.20 |
| 7 | 7.5 | 6.9 | 4.5 | 0.24 |
| Average | 10.2 | 9.3 | 6.2 | 0.26 |
| Controls | ||||
| 8 | 6.8 | 6.5 | 3.8 | 0.22 |
| 9 | 7.5 | 7.4 | 3.2 | 0.22 |
| 10 | 7.9 | 7.5 | 5.3 | 0.18 |
| Average | 7.4 | 7.1 | 4.1 | 0.20 |
| Postoperative patients with Chiari I | ||||
| 11 | 10.0 | 9.9 | 5.5 | 0.22 |
| 12 | 8.3 | 7.8 | 4.4 | 0.22 |
| 13 | 15.6 | 15.7 | 7.3 | 0.18 |
| Average | 11.3 | 11.1 | 5.7 | 0.21 |