Re: [Freesurfer] Skullstrip error issue

2012-10-03 Thread Louis Nicholas Vinke
Hi Rashmi, I assume you've read the skullstrip wiki page, but I've included it below just in case. Have you tried different watershed thresholds? Also, you do not need to include the -clean-bm flag every time. You can run the skullstrip step once with the -clean-bm to start from scratch, and

Re: [Freesurfer] Skullstrip error issue

2012-10-02 Thread Rashmi Singh
Thank you Bruce, I certainly understand your point. In my study I am trying to use whole brain volume to normalize my volumetrics data. Due to the inclusion of the dura into brain, I may get variation in the whole brain volume across subjects. In addition the current issue is affecting the grayma

Re: [Freesurfer] Skullstrip error issue

2012-10-02 Thread Bruce Fischl
Hi Rashmi getting rid of all the dura without removing any problem is exceedingly difficult (if not impossible). Usually we live with some remaining dura as it doesn't affect the surface placement much. cheers Bruce On Tue, 2 Oct 2012, Rashmi Singh wrote: Hello experts,  I am getting skul

[Freesurfer] Skullstrip error issue

2012-10-02 Thread Rashmi Singh
Hello experts, I am getting skull strip issues with FreeSurfer recon-all runs in every data. I ran recon-all on my T1-data and noticed that the skullstrip is not so good. Almost in every subjects there were dura included, so I tried the suggestion of using the flags -skullstrip and -Clean–bm an