Hi - this is explained in detail in the original TBSS paper, so that's
worth reading. Basically, if you look at your mean_FA image and you
can see a structure such as the lower cingulum in humans that is long
and thin and 'cylindrical' and relatively separated from other
structures then you could consider creating your own mask for use in
this way. Have a look in FSLView at the FMRIB58 and our cingulum
mask to get the idea.
Cheers.
On 21 May 2009, at 19:07, Bhargav Kumar Errangi wrote:
> Hi Steve,
> Thank you very much for posting the script. Just so you know, our
> group is
> currently working on the asymmetry analysis of the chimpanzee and
> macaque
> data in addition to humans using TBSS. Could you please explain to
> us how
> the LowerCingulum_1mm, search rule mask in the script is derived so
> that we
> can replicate the procedure on our non-human primate data?. Could
> you also
> explain to us the importance of the mask/disadvantages of not using
> it in
> the script?
> Thanks,
> Bhargav
>
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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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