Table 1.
Volume flow rate (VFR) measurements in large anterior circulation vessels before and after stent deployment. Vessels were measured at the cut planes shown in Fig. 2. VFR is also normalized to the total flow entering the brain through the ICA.
| Pre-operative | Postoperative | Relative change | |||
|---|---|---|---|---|---|
| Blood vessel measured | VFR (ml/s) | Laterality index | VFR (ml/s) | Laterality index | Absolute |
| Right Above Bifurcation ICA | 3.05 | -0.190 | 2.46 | -0.095 | -0.19 |
| Left Above Bifurcation ICA | 2.08 | 2.03 | -0.02 | ||
| Right Cervical ICA | 3.37 | -0.168 | 2.44 | -0.048 | -0.28 |
| Left Cervical ICA | 2.40 | 2.22 | -0.07 | ||
| Right Cavernous ICA | 3.37 | -0.168 | 2.44 | -0.048 | -0.28 |
| Left Cavernous ICA* | 1.43 | — | — | ||
| Right Supraclinoid ICA | 1.25 | -0.184 | 0.98 | -0.116 | -0.21 |
| Left Supraclinoid ICA | 0.86 | 0.78 | -0.10 | ||
| Right MCA M1 | 0.80 | -0.153 | 0.47 | 0.116 | -0.42 |
| Left MCA M1 | 0.59 | 0.59 | 0.00 | ||
| ACA | 0.09 | 0.11 | 0.21 | ||
| Acom† | -0.13 | 0.07 | -1.52 | ||
ICA: Internal carotid artery. MCA: Middle cerebral artery. ACA: Anterior cerebral artery. Acom: Communicating artery.
*
Indicates that measurements were not possible due to artifact from the stent.
†
Negative sign indicates a flow reversal in the Acom, a change in the overall direction of the flow volume through the cut plane surface.