Table 2.

Significant clusters for whole-brain between-group ¹⁸F-FDG uptake Regional clusters showing significant differences in 18F-FDG uptake between PH + and PH- patients. Statistical threshold uncorrected p < 0.001 with k = 50 voxels. X Y Z – stereotactic coordinates in Montreal Neurological Institute (MNI) space; T – SPM T-score; BA – Brodmann area, k – cluster size in voxels.

				Peak voxelMNI coordinate
BA	Anatomical Label		k	x	y	z	T
	PH+ > PH-
	Cerebellum 8	L	79	−36	−40	−50	4.52
32	Middle frontal	R	252	26	40	10	4.21
	Medulla		61	0	−34	−58	3.92
	PH+ < PH-
6, 4	Precentral,Postcentral	L	223	−38	−14	60	−4.95
9, 10	Medial superior frontal	L/R	426	2	62	32	−4.42
2, 4	Postcentral	L	79	−60	–22	48	−4.37
9, 44, 6	Precentral, Opercular part of inferior frontal	L	250	−56	8	26	−4.34
7, 19	Superior occipital, Parietal superior	L	86	−20	−80	44	−3.90