mris_volmask
mris_volmask <options> <io>
Computes a volume mask, at the same resolution as the
<subject>/mri/brain.mgz. The volume mask contains 4 values: LH_WM (default 10), LH_GM (default 100), RH_WM (default 20), RH_GM (default 200).
The algorithm uses the 4 surfaces situated in <subject>/surf/[lh|rh].[white|pial].surf and labels voxels based on the signed-distance function from the surface.
| Argument | Explanation |
|---|---|
| <io> |
| Argument | Explanation |
|---|---|
| --cap_distance | pars = 1. maximum distance up to which the signed distance function computation is accurate |
| --label_background | pars = 1. Override default value for background label value (0) |
| --label_left_white | pars = 1. Override default value for left white matter label - 20 |
| --label_left_ribbon | pars = 1. Override default value for left ribbon label - 10 |
| --label_right_white | pars = 1. Override default value for right white matter label - 120 |
| --label_right_ribbon | pars = 1. Override default value for right ribbon label - 110 |
| --surf_white | pars = 1. Surface root name (i.e. <subject>/surf/$hemi.<NAME> - default value is white |
| --surf_pial | pars = 1. Surface root name (i.e. <subject>/surf/$hemi.<NAME> - default value is pial |
| --out_root | pars = 1. Default value is ribbon - output will then be mri/ribbon.mgz and mri/lh.ribbon.mgz and mri/rh.ribbon.mgz (last 2 if -save_ribbon is used) |
| --sd | pars = 1. Option to specify SUBJECTS_DIR, default is read from enviro |
| --help | display help message |
| --save_distance | option to save the signed distance function as ?h.dwhite.mgz ?h.dpial.mgz in the mri directory |
| --edit_aseg | option to edit the aseg using the ribbons and save to aseg.ribbon.mgz in the mri directory |
| --save_ribbon | option to save just the ribbon for the hemispheres - in the format ?h.ribbon.mgz |
Report bugs to <freesurfer@nmr.mgh.harvard.edu>