Hi all,
Does anybody know whether the dtifit program can accurately measure the mean diffusivity (MD) in regions with crossing fibers? I know that FA values are not too accurate in these regions (using conventional DTI), but maybe the MD is left affected by the validity of the gaussian model. Does anybody know some articles about this issue, or a comparative article which compares DTI-based MD and MD calculated by more sophisticated methods (Q-ball, DSI, HARDI,...)?
Thanks a lot,
Gábor
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