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Howdy, Another piece to the puzzle. Please see below for fslinfo on nodif_brain-mask, dti1, data. I followed up by running fslinfo on all of the files in my subjects directory. I noticed that my nodif_brain.nii.gz is FLOAT 32 while the nodif_brain_mask.nii.gz is INT16. Also all of the files produced after DTIfit are FLOAT32 (i.e. dti_FA, dti_L1, dti_L2....) Let me know what you think. I believe that BET is producing nodif_brain.nii.gz and the mask. -James On Wed, 12 Mar 2008 11:54:04 +0000, James Sheehan <[log in to unmask]> wrote: >Hi, > >Thank you for helping this is just what I needed to understand. I was not >entirely sure which file I should post from fslinfo for the data. I've >posted it for DTI1 and data.nii.gz and the no_diff-mask. dti1 are my dti >directions combined with FSL after co-registration. Data.nii is the data >after eddy current correction. Thank you both again for your help. > ># fslinfo /root/Desktop/control/subject100/dti1.nii.gz >data_type INT16 >dim1 256 >dim2 240 >dim3 144 >dim4 16 >datatype 4 >pixdim1 1.0000000000 >pixdim2 1.0000000000 >pixdim3 1.0000000000 >pixdim4 1.0000000000 >cal_max 0.0000 >cal_min 0.0000 >file_type NIFTI-1+ > ># fslinfo /root/Desktop/control/subject100/data.nii.gz >data_type INT16 >dim1 256 >dim2 240 >dim3 144 >dim4 16 >datatype 4 >pixdim1 1.0000000000 >pixdim2 1.0000000000 >pixdim3 1.0000000000 >pixdim4 1.0000000000 >cal_max 0.0000 >cal_min 0.0000 >file_type NIFTI-1+ > > >fslinfo /root/Desktop/control/subject100/nodif_brain_mask.nii.gz >data_type INT16 >dim1 256 >dim2 240 >dim3 144 >dim4 1 >datatype 4 >pixdim1 1.0000000000 >pixdim2 1.0000000000 >pixdim3 1.0000000000 >pixdim4 1.0000000000 >cal_max 0.0000 >cal_min 0.0000 >file_type NIFTI-1+