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Table 3: Values of hemispheric ratios before and after acetazolamide challenge
Mean CBF Ratio Mean CBV Ratio Mean MTT Ratio
Baseline 0.79 ± 0.16 1.06 ± 0.31 1.46 ± 0.31
Acetazolamide 0.63 ± 0.17 0.98 ± 0.15 1.91 ± 0.56
P value <.001 .200 .002
Note:—Values are mean ± SD. CBF indicates cerebral blood flow; CBV, cerebral blood volume; MTT, mean transit time.
	Mean CBF Ratio	Mean CBV Ratio	Mean MTT Ratio
Baseline	0.79 ± 0.16	1.06 ± 0.31	1.46 ± 0.31
Acetazolamide	0.63 ± 0.17	0.98 ± 0.15	1.91 ± 0.56
P value	<.001	.200	.002