Table 3.
Relative rCBF grey matter measurements from PET and perfusion CT scanning normalized to white matter
| PET | COV | CT | COV | ΔCBF | |||
|---|---|---|---|---|---|---|---|
| Side | ROI | Mean ± SD | % | Mean ± SD | % | Mean ± SD | p Value |
| Right | Caudate nucleus | 2.77 ± 0.26 | 9.4 | 3.32 ± 0.55 | 16.6 | 0.56 ± 0.40 | < 0.05 |
| Putamen | 2.90 ± 0.30 | 10.4 | 3.39 ± 0.62 | 18.3 | 0.44 ± 0.65 | NS | |
| Frontal cortex | 2.81 ± 0.30 | 10.5 | 3.47 ± 0.60 | 17.2 | 0.66 ± 0.52 | < 0.05 | |
| Parietal cortex | 2.56 ± 0.35 | 13.6 | 3.37 ± 0.67 | 19.8 | 0.81 ± 0.67 | < 0.05 | |
| Occipital cortex | 2.58 ± 0.34 | 13.3 | 3.17 ± 0.64 | 20.2 | 0.59 ± 0.72 | NS | |
| Left | Caudate nucleus | 2.84 ± 0.33 | 11.6 | 3.24 ± 0.62 | 19 | 0.40 ± 0.45 | NS |
| Putamen | 2.96 ± 0.28 | 9.4 | 3.36 ± 0.66 | 19.7 | 0.37 ± 0.66 | NS | |
| Frontal cortex | 2.94 ± 0.31 | 10.4 | 3.41 ± 0.56 | 16.3 | 0.48 ± 0.52 | NS | |
| Parietal cortex | 2.67 ± 0.34 | 12.7 | 3.43 ± 0.64 | 18.5 | 0.76 ± 0.70 | < 0.05 | |
| Occipital cortex | 2.65 ± 0.40 | 15 | 3.12 ± 0.77 | 24.8 | 0.47 ± 0.69 | NS | |
| Volume weighted grey matter | 2.78 ± 0.25 | 9.1 | 3.34 ± 0.48 | 14.3 | 0.56 ± 0.47 | < 0.05 | |
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. The p values are Bonferroni-corrected.