Dear FSLers,
thanks a lot for all the previous very helpful comments on my questions. Basically everything seems to work properly now, but I am wondering whether to trust my tracking results:
I would like to track primary and secondary motor areas down to the the medulla obl., and up again for robust tracks and further normalisation of voxel connectivity profiles. During testing, I work on 2,3 iso, 60 directional b1000 dti data. Exlusion & waypoint criteria for CS tracts sometimes lead to only 300 tracts in healthy subjects from SMA 300 seedvoxel, about 96000 from M1 300 seed voxels at the WM-GM interface. The data were pulse-dated.
1) Would you trust those data?
2) Which scanning parameters would you suggest to get reliable cortical-medullar voxel connectivity profiles? I think of b1500, 120 directions, 1.7 or even better iso-resolution. Pulse-gated I guess. Too much?
Thanks again for your comments.
Best
Robert
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