Hi FSL experts,
Is it correct to use the statistical maps ( tbss_tfce_corrp_tstats1, tbss_tfce_corrp_tstats2) from the output of TBSS analysis as mask to do further calculations.
For example if I want to calculate the white matter volume in the areas of significant difference between the groups in FA ( the output of TBSS) :
When finish TBSS analysis :
1. I threshold tbss_tfce_corrp_tstats2 at 0.95 to get tbss_tfce_corrp_tstats2_thr_0.95
2. I move this thresholded map to T1 ( by registering T1 to MNI and then using reversed matrix)
3. Calculate the white matter volume using the following command fslstats T1 -k tbss_tfce_corrp_tstats2_thr_0.95 -V
Is this correct?
If so do I need to calculate the volume over all the voxels using this command :
fslstats T1 -k tbss_tfce_corrp_tstats2_thr_0.95 -M -V | awk '{ print $1 * $3 }'
Thanks for any advice!
Jon
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