Hi,
I'm afraid there is no easy way to get this at the moment.
There is a way to estimate it though.
You can create a isotropic highres (e.g. 0.5mm) volumetric mask
from the surface with
run_mesh_utils -m surface.vtk -o maskim -i /usr/local/fsl/data/
standard/MNI152_T1_0.5mm.nii.gz --doFillMesh
and then estimate the discrete surface area by the following trick:
fslstats maskim -l 99 -V
and divide the mm^3 volume (second number) by the voxel length (0.5mm)
to get an estimate of the area. Fslstats calculates the volume of the
boundary voxels
which is close to a one voxel thick rim at the surface. It isn't an
exact method, but
given the discrete nature of the image that the surface is derived
from it is probably
close enough for most purposes.
All the best,
Mark
On 16 Sep 2009, at 14:56, Liz Selgrade wrote:
> Hi FSLers,
>
> Is there a way to get the surface area of the segmentations from
> FIRST?
> Maybe something with the meshes?
>
> Thanks,
> Liz Selgrade
>
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