[Freesurfer] Support with CVS/BBR Issue

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Dear FreeSurfer Community,

I have used the CVS and BBR registration methods to spatially align T1 and diffusion images to an ideal subject’s T1. I have noticed some discrepancies when viewing the aligned images in FSLview. If I toggle between subjects in FSLview the alignment looks quite good; however, when all subjects’ diffusion images are merged into a single 4D volume, the alignment is quite poor and variable. The same is true for subjects’ T1s. Is this a known issue and, if so, is it a problem with FSLview or my implementation of FreeSurfer?

Thanks, -Austin -- Austin M. Bazydlo, MS PhD Candidate Dept. of Medical Physics University of Wisconsin-Madison