Figure 3.

Voxel-based analysis of the association between the dopamine transporter availability in the putamen on ¹²³I-FP-CIT SPECT and FDG PET SUVr in cortex. Maps of this association are displayed at the P < 0.001 level for the entire cohort of iRBD patients (n = 22). Colours towards red indicate higher FDG SUVr or hypermetabolism in association with lower dopamine transporter availability in the putamen. The voxel-based regional associations of putamen ¹²³I-FP-CIT SPECT and FDG PET SUVr were corrected for multiple comparisons using family-wise error correction. Because there were no significant associations between putamen ¹²³I-FP-CIT SPECT and FDG PET after correction for multiple comparisons, we display the uncorrected results.