Table 5. Reduced variability in intensity values after normalization by the three reference regions (coefficients of variation, %).
Frontal | Parietal | Temporal(lateral) | Temporal(medial) | Occipital | |
Absolute CBF | 46.61 | 46.96 | 46.31 | 45.54 | 44.47 |
CBF/CBFcer | 8.69 | 8.76 | 8.62 | 10.37 | 8.72 |
CBF/CBFwm | 7.39 | 7.40 | 7.17 | 11.18 | 9.82 |
CBF/CBFcgm | 5.54 | 5.40 | 5.94 | 7.98 | 5.73 |
CBF, cerebral blood flow; CBF/CBFcgm, CBF values per region of interest normalized by whole-brain cortical gray matter; CBF/CBFcer, CBF values per region of interest normalized by cerebellum; CBF/CBFwm, CBF values per region of interest normalized by whole-brain white matter. Coefficients of variation show bilateral information per lobe in the three groups (controls, MCI and AD).