Table 2

Grey matter CVR differences in the MCA territory between patients with and without an intact CoW

 Non-intervened hemisphereIntervened hemisphere
Intact CoW0.131±0.0440.197±0.0410.024±0.0160.147±0.005
No ACoA+PCoA0.117±0.050.171±0.0370.057±0.0260.145±0.019
  • All values in per cent MR signal change/mm Hg, mean±SE.

  • No significant differences were seen between those with and without an intact CoW.

  • ACoA, anterior communicating artery; CoW, circle of Willis; CVR, cerebrovascular reactivity; MCA, middle cerebral artery; PCoA, posterior communicating artery.