Hi,
If you look at the histogram, hopefully the majority of the values are
positive. If you find the negative values, hopefully they are mostly
just around the very edge of the brain.
Yes, you need to scale the L1 values, as described in the manual. I
would probably just ignore the negative values.
Cheers, Steve.
On 1 Feb 2008, at 17:10, Paul Geha wrote:
> Dear FSL users,
>
> I am trying to run TBSS on the L1 and (L2+L3)/2 maps. I noticed
> that the L1
> data range is between -0.000491 to 0.003960 ; is this range with
> negative
> values expected?
> should I scale it to 0 to 10000?
> thanks a lot
> Paul
>
>
> Paul Geha M.D.
> Northwestern University
> The Feinberg School of Medicine
> Department of Physiology M211
> 303 E. Chicago Ave.
> Chicago, IL 60611
> Tel:312-503 2886
> Fax: 312-503-5101
>
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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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