I have a question about registering DTI maps(102*102*72, 2mm*2mm*2mm) onto FreeSurfer conformed space(256*256*256, 1mm*1mm*1mm), so what i have done was:
1) register t1 on the umsample b0 image use flirt rigid registration, get the deformation matrix
2) apply the registration matrix for MD and AD, RD, FA maps with the inversed deformation matrix from step 1 to the FreeSurfer space
3) resample the registered FA map into the same size in Freesurfer space (256*256*256, 1mm*1mm*1mm)
I did try resampling the FA map before and after registration use mri_convert, but the results do not look well, even the resampling process changes also the space.
Any one have some suggestions?