Table 2.
RCBF measurements from PET and perfusion CT scanning
| 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 |
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.