Re: [Freesurfer] question on mri_segstats

Hi Doug,

Thank you for the answers.

2013/4/26 Douglas N Greve greve@nmr.mgh.harvard.edu

Hi Fang,

On 04/26/2013 12:35 PM, Fang CAO wrote:

...

Hi, I have some question on mri_segstats

1. --seg-erode Nerodes

Is it the size of the window for erosion?

I'm not sure what you mean. Nerodes is the number of recursive 1 voxel erosions.

Does it use the same algorithm as in "mri_binarize -erode Nerodes"

...

2. --robust percent

Is it the percentage of tissue in each voxel?

It computes a "trimmed" mean/std in each ROI by excluding the top and bottom X% intensities.

Does it always exclude the X% intensities, or it uses some outlier detection algorithm to identify maximum X% outliers?

Fang