Table 3.
Summary of the minimum, maximum, and average flow velocities in the intracranial arteries.
| Artery | Minimum (cm/sec) | Maximum (cm/sec) | Mean (cm/sec) | Std. deviation (cm/sec) |
|---|---|---|---|---|
| ICA | 21 | 52 | 33.59 | 6.95 |
| MCA | 34 | 184 | 85.08 | 36.56 |
| MCA/ICA | 1.06 | 6.75 | 2.62 | 1.25 |
| ACA | 25 | 146 | 68.32 | 28.66 |
| PCA | 24 | 127 | 53.33 | 20.66 |
| VA | 19 | 90 | 42.25 | 15.23 |
| Proximal BA | 18 | 116 | 49.63 | 22.78 |
| Distal BA | 18 | 153 | 71.67 | 36.50 |
| Distal BA/VA | 0.59 | 5.05 | 1.73 | 0.83 |
ICA: internal carotid artery; MCA: middle cerebral artery; ACA: anterior cerebral artery; PCA: posterior cerebral artery; VA: vertebral artery; BA: basilar artery.