Dear Souheil,
> Thanks for all the info.
>
> A couple of more questions:
> 1) How do I get fugue to unwarp 4D volume? or warp an unwrapped phase
> map so I can then undistort?
>
> fugue -i unwrappedphase -p unwrappedphase -w warpedphase
> only gives me the first phase image warped.
> I can split, warp separtely and then merge, but that's less elegant.
>
> fugue -i fieldmap -p unwrappedpahse -w warpedfielmap
> doesn't work, because fieldmap is complex and fugue needs real.
I'm afraid that 4D support is not implemented at the moment.
It is definitely on the list of added features for
the next release.
Therefore, at the moment you do need to split and merge.
This is quite easily done using avwsplit and avwmerge.
> 2) how much smoothing did you do to get the results in the table in
> http://www.academicpress.com/www/journal/hbm2001/11324.html
The best results use a sigma of around 0.5 to 1.0 voxels.
For more info, the poster version of this work can be
found at:
http://www.fmrib.ox.ac.uk/~mark/work/hbm2001.ps
Cheers,
Mark
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