Table 2.

Clusters demonstrating overlapping and distinct patterns of gray matter atrophy in ALS and bvFTD.

Cluster	Volume (mm3)	Hemisphere	Label	Talairach coordinates of peak voxel			BA
				X	Y	Z
A. Overlapping atrophy in bvFTD and ALS
1	464	R	Insula	32	16	2	13
2	168	L	Insula	−34	12	−10	13
3	80	L	Medial frontal gyrus	0	54	10	10
4	56	R	Anterior cingulate	2	44	8	32
B. Greater atrophy in bvFTD
1	5,264	L	Anterior cingulate	3.9	6.9	4.2	25
		L	Caudate	7.2	11	13.8	/
2	1,664	L	Anterior cingulate	−3.6	37.9	27.6	32
3	1,208	L	Caudate	−7.5	11.8	12	/
4	576	L	Insula	−31	14.6	6.4	13
5	128	R	Thalamus	3.3	−5.3	12	/
C. Greater atrophy in ALS
1	360	R	Postcentral gyrus	36.9	−28.2	48.5	2