Dear Victor,
> My colleagues and I have a basic FSL question. When segmenting in FIRST, does FSL automatically read the image resolution? Our scan sequence acquired 2x2x2mm images. We want to know if the default is 1x1x1mm, and if it is necessary to specify anywhere in the OS X terminal that the image is 2x2x2mm prior to FIRST segmentation. Or, does FSL recognize the acquisition was in 2x2x2mm resolution on its own, and takes this into account when segmenting the specified regions.
provided that the voxel-size is correctly specified in the analyze/niftii-header FSL will read it. 2mm cubed sounds a little big for segmentation though and for the future you may want to consider smaller voxels as that should improve your results.
Jesper
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