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Table 2 RCBF measurements from PET and perfusion CT scanning

From: Brain perfusion CT compared with15O-H2O-PET in healthy subjects

   PET COV CT COV ΔCBF  
Side ROI Mean ± SD % Mean ± SD % Mean ± SD p Value
Right Caudate nucleus 48.7 ± 6.3 12.9 71.6 ± 10.1 14.2 22.9 ± 12.2 < 0.05
  Putamen 50.5 ± 7.1 14 73.9 ± 13.9 18.7 21.5 ± 13.9 < 0.05
  Frontal cortex 49.4 ± 6.8 13.7 74.4 ± 9.1 12.3 25.0 ± 9.3 < 0.05
  Parietal cortex 45.0 ± 6.7 14.9 72.0 ± 8.5 11.8 27.1 ± 10.7 < 0.05
  Occipital cortex 45.1 ± 5.7 12.7 68.5 ± 15.5 22.7 23.4 ± 15.3 < 0.05
  Anterior white matter 17.6 ± 3.0 17.1 18.9 ± 5.2 27.7 1.3 ± 5.9 NS
  Posterior white matter 18.0 ± 2.5 14.1 22.5 ± 4.2 18.7 4.5 ± 3.7 < 0.05
Left Caudate nucleus 49.7 ± 4.9 9.9 69.6 ± 10.7 15.4 19.9 ± 10.6 < 0.05
  Putamen 51.3 ± 5.1 10 73.0 ± 11.9 16.4 19.9 ± 11.8 < 0.05
  Frontal cortex 51.5 ± 6.3 12.3 73.3 ± 9.2 12.6 21.8 ± 8.7 < 0.05
  Parietal cortex 46.8 ± 5.5 11.8 73.3 ± 8.3 11.4 26.5 ± 8.7 < 0.05
  Occipital cortex 46.4 ± 7.2 15.6 67.1 ± 15.9 23.7 20.6 ± 14.0 < 0.05
  Anterior white matter 18.4 ± 2.9 15.5 23.2 ± 3.9 17 4.8 ± 4.8 < 0.05
  Posterior white matter 16.5.± 2.0 12 22.7 ± 4.4 19.4 6.2 ± 4.3 < 0.05
  Volume weighted white matter 17.4 ± 2.0 11.7 21.8 ± 3.4 15.8 4.4 ± 3.3 < 0.05
  Volume weighted grey matter 48.7 ± 5.0 10.4 71.8 ± 8.0 11.2 23.1 ± 8.5 < 0.05
  1. CBF, cerebral blood flow; PET, positron-emission tomography; CT, computed tomography; ROI, region of interest; SD, standard deviation; COV, coefficient of variance; NS, non-significant. N = 12. RCBF units are in millilitre per minute per 100 g. The p values are Bonferroni-corrected.