Comparison of mean (± SE) percentage changes after acetazolamide challenge versus baseline in patients with ipsilateral/contralateral cc-TQ ratio ≥1 and <1.

*pNSnot statistically significant, group of patients with ipsilateral/contralateral cc-TQ ratio ≥1 versus group of patients with cc-TQ cc-TQ–pial artery pulsation (cardiac component of the transillumination quotient); sas-TQ–the subarachnoid width (subarachnoid component of the transillumination quotient); MTT–mean transit time; CBV–cerebral blood volume; TTP–time to peak; PSV–peak systolic velocity; SE–standard error; ml–millilitres; g–gram; min.–minutes; s–seconds; cm–centimetres.