Table 2.

Results of PET neuroimaging analyses.

Modality [contrast]	Region	MNI coordinates	Statistics		Cluster size
		x/y/z	t-value	p-value (FWE)
FDG-PET
[BL < HC]	Left midbrain	−12/−20/−20	4.525	0.028	35
[FU < HC]	Bilateral midbrain	−6/−20/−18	5.55	<0.001	227
[FU < BL]	Left midbrain	−8/−10/−16	4.70	0.045	22
FDOPA PET
[BL < HC]	Left putamen	−28/−8/−6	5.40	0.012	187
	Right putamen	28/−8/2	5.37	0.017	155
[FU < HC]	Left putamen	−28/−14/−2	7.69	0.003	362
	Right putamen	28/−10/2	8.59	0.009	228
	Right caudate	16/6/14	4.33	0.033	99
[FU < BL]	Right caudate	8/12/−2	9.73	0.001	220

Statistical details of PET analyses by contrast and modality. All t-values were calculated using SPM12. For FDG-PET, p-values after small-volume-correction for midbrain and for FDOPA PET after small-volume-correction for striatum are shown, respectively.