Hi there -
To run FDT, you need to know the gradient directions, and b-values applied
during the diffusion weighted scan. These can be computed from the
gradient profiles used during the acquisition. Most modern scanners will
output these values but, if not, you should ask your physics team to
provide you with them.
For info on how you input them into FDT, see
http://www.fmrib.ox.ac.uk/fsl/fdt/index.html
T
On Sun, 17 Oct 2004, Carlos R. Cortes wrote:
> Hello,
> I'm completely new to DTI and not to much experience using fsl. I have a
> couple of questions (sorry if they are too basic).
> 1. What are the parameters I have to know about DTI data in order to use
> FDT?
> 2. How can I obtain the bvals and bvecs files?
> Thanks for the tool,
> Carlos
>
--
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Tim Behrens
Centre for Functional MRI of the Brain
The John Radcliffe Hospital
Headley Way Oxford OX3 9DU
Oxford University
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Mobile 07980 884537
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