Table 5. Tract-based spatial statistics results showing regions of white matter integrity decrease in each of the patient groups compared with Controls^a .

				MNI coordinates
Contrast	Tracts	Side	Number of voxels	x	y	z	T value
BvFTD versus Controls	Inferior longitudinal fasciculus, uncinate fasciculus, inferior fronto-occipital fasciculus, superior longitudinal fasciculus, anterior thalamic radiation, forceps minor, forceps major, cingulum (cingulate gyrus), cingulum (hippocampal part), superior longitudinal fasciculus (temporal part)	B	64,986	−28	0	−36	4.14
SD versus Controls	Inferior longitudinal fasciculus, uncinate fasciculus	L	2,096	−34	−3	−34	2.53
AD versus Controls	Forceps major, forceps minor, inferior fronto-occipital fasciculus, inferior longitudinal fasciculus, uncinate fasciculus, cingulum (cingulate gyrus)	B	31,691	−24	−56	11	3.49

^aDiffusion tensor imaging data not available for 1 bvFTD patient. Age is included as a covariate in all contrasts. All clusters reported using threshold-free cluster enhancement method and corrected for Family-Wise Error (FWE) at p<.05. BvFTD = behavioural-variant frontotemporal dementia; SD = semantic dementia; AD = Alzheimer's disease; L = Left; B = Bilateral; MNI = Montreal Neurological Institute.