Table 4:

Comparison of intraobserver and interobserver variability for CT perfusion values separately for the symptomatic and asymptomatic hemisphere

VariabilitySDDrel (%)
Symptomatic SideAsymptomatic Side
    Basal ganglia1820419207*
    Basal ganglia1515821189
  • Note:—SDDrel indicates SDs of relative differences; CBV, cerebral blood volume; CBF, cerebral blood flow; MTT, mean transit time; ACA, anterior cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery.

  • * Difference between asymptomatic and symptomatic hemisphere significantly different (P < .05).