Aha - this is the "mode" - you can blame Gordon Kindlmann for
persuading us to include that - see his publications at:
http://lmi.bwh.harvard.edu/~gk/
Basically, the mode is a measure of whether the tensor is more tubular
(e.g. 1 fibre) or more pancake-ish (e.g. 2 fibres). The measure is
mathematically orthogonal to FA, although in practice is biologically
somewhat correlated with it. We have found in some cases that the mode
is more sensitive to certain pathology changes than FA.
Cheers.
On 2 Dec 2008, at 17:42, Dianne Patterson wrote:
> I notice that in addition to the files dti_fit has always generated
> in the past:
>
> Outputs of dtifit
> • <basename>_V1 - 1st eigenvector
> • <basename>_V2 - 2nd eigenvector
> • <basename>_V3 - 3rd eigenvector
> • <basename>_L1 - 1st eigenvalue
> • <basename>_L2 - 2nd eigenvalue
> • <basename>_L3 - 3rd eigenvalue
> • <basename>_MD - mean diffusivity
> • <basename>_FA - fractional anisotropy
> • <basename>_S0 - raw T2 signal with no diffusion weighting
> There now seems to be a new image: <basename>_MO
>
> Perhaps this is new to FSL 4.1??
> Can someone tell me what it is (I looked in the archive and the
> website...but I'm not seeing it)
>
> Thankyou,
>
> Dianne
>
>
> --
> Dianne Patterson, Ph.D.
> [log in to unmask]
> University of Arizona
> SLHS 328
> 621-5105
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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