Table 2:
Values of perfusion CT parameters and percentage change before and after acetazolamide in the cerebral hemispheres ipsilateral and contralateral to the stenoses
| Mean CBF (mL/100 g/min) |
Mean CBV (mL/100 g) |
Mean MTT (s) |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Hemispheres Ipsilateral to Stenotic Side | Hemispheres Contralateral to Stenotic Side | P Value | Hemispheres Ipsilateral to Stenotic Side | Hemispheres Contralateral to Stenotic Side | P Value | Hemispheres Ipsilateral to Stenotic Side | Hemispheres Contralateral to Stenotic Side | P Value | |
| Baseline | 52.3 ± 18.8 | 69.8 ± 32.2 | .003 | 3.9 ± 1.2 | 3.0 ± 1.3 | .933 | 5.0 ± 1.7 | 3.4 ± 0.8 | <.001 |
| Acetazolamide | 58.9 ± 26.3 | 97.4 ± 47.1 | <.001 | 3.4 ± 1.7 | 3.5 ± 1.5 | .643 | 5.4 ± 2.2 | 2.8 ± 0.7 | <.001 |
| P Value | .137 | <.001 | .126 | .003 | .296 | <.001 | |||
| Mean CBF |
Mean CBV |
Mean MTT |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| % change | 12.53 ± 32.20 | 40.68 ± 26.98 | <.001 | 12.69 ± 23.78 | 21.14 ± 34.45 | .244 | 8.81 ± 30.06 | −17.72 ± 10.38 | .005 |
Note:—Values are mean ± SD. CBF indicates cerebral blood flow; CBV, cerebral blood volume; MTT, mean transit time.