HI - I think you're asking if you can take a TBSS-based ROI and
transform it onto the original data.
This involved inverting the IRTK warp field that mapped the original
data into the TBSS standard space. I'm not sure if IRTK already
offers this functionality - as you're at Imperial you can ask
Daniel :) From our end we now have a simple script that allow the
conversion of the IRTK .dof warp fields into a 4D NIFTI vector field,
and have nearly finished writing a program that will invert this to a
reasonable degree of accuracy, so we should be able to release that
in the next FSL release.
Cheers, Steve.
On 9 Mar 2007, at 10:01, Serena Counsell wrote:
> Apologies if this is a silly question.
>
> I am keen to standardise the position of a roi in white matter
> across a
> group of infants in order to generate tracts that can be assessed
> quantitatively. Is it possible to use the transformations generated as
> part of the TBSS process to ensure that this roi is in the same
> position
> for all infants?
>
> wbw serena
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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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