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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.