Dear all users,
I use the TBSS toolbox in order to analyse FA maps. My raw FA maps are sampled at (2x2x3) mm, and they look rather OK. However, after running the tbss_3_postreg command to perform registration to the target image (no mather if it's the FMRIB58_FA or a study specific target), and upsampling to (1x1x1) mm, many of the subjects' FA maps gets affected in a strange way (please see attached print screen). Mainly, the corpus callosum gets chopped off (FA decreases towards 0).
I have gone through the archieve but hasn't found anyone posting this issue before.
I guess it's mostly related to the upsampling. Would there be any idea to downsample the FMRIB58_FA target to (1.5x1.5x1.5) mm instead? Is there anyone else experience the same?
All comments are highly welcome and appreciated!
Best regards,
Martin
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