Disparate voxel based morphometry (VBM) results between SPM and FSL softwares in ALS patients with frontotemporal dementia: which VBM results to consider?

Table 1 Dice similarity index values of statistical parametric maps between the softwares

Dice similarity index	FSL (TFCE ON) vs Freesurfer	FSL (TFCE OFF) vs SPM	FSL (TFCE OFF) vs Freesurfer	SPM vs Freesurfer
	0.3 (motor cortex), 0.32 (extra-motor cortex)	0.04 (left and right hemispheres)	0.0 for motor cortex and 0.0 for extra-motor cortex	0.0 (motor cortex), 0.02 (extra-motor cortex)

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