Hello Everyone!

I have several structural images were too much dura was included into the wm calculation. (see recon-all_std for the standard processing image)

I followed the skull strip instructions and the gcut procedure made only minor changes, and so I used the watershed and lowered the threshold it removed the dura, but did not update the .pial files to match the updated edge.

This is  output to screen and command that I used

recon-all -skullstrip -wsthresh 20 -clean-bm -subjid 31313422_15544

Subject Stamp: freesurfer-Linux-centos4_x86_64-stable-pub-v5.3.0
Current Stamp: freesurfer-Linux-centos4_x86_64-stable-pub-v5.3.0
INFO: SUBJECTS_DIR is /root/Desktop
Actual FREESURFER_HOME /usr/local/freesurfer
-rwxr-xr-x. 1 root root 1432836 Aug 18 20:19 /root/Desktop/31313422_15544/scripts/recon-all.log
Linux kate.ad.wcas.northwestern.edu 2.6.32-642.3.1.el6.x86_64 #1 SMP Sun Jun 26 18:16:44 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux

 mv -f /root/Desktop/31313422_15544/mri/brainmask.mgz /root/Desktop/31313422_15544/trash

#--------------------------------------------
#@# Skull Stripping Thu Aug 18 20:22:30 CDT 2016
/root/Desktop/31313422_15544/mri

 mri_watershed -T1 -brain_atlas /usr/local/freesurfer/average/RB_all_withskull_2008-03-26.gca transforms/talairach_with_skull.lta -h 20 T1.mgz brainmask.auto.mgz


Mode:          T1 normalized volume
Mode:          Use the information of atlas (default parms, --help for details)
Mode:          Preflooding height manually specified

*********************************************************
The input file is T1.mgz
The output file is brainmask.auto.mgz
Weighting the input with atlas information before watershed

*************************WATERSHED**************************
Sorting...
      first estimation of the COG coord: x=125 y=99 z=127 r=92
      first estimation of the main basin volume: 3292184 voxels
      Looking for seedpoints
        2 found in the cerebellum
        18 found in the rest of the brain
      global maximum in x=142, y=84, z=82, Imax=255
      CSF=20, WM_intensity=110, WM_VARIANCE=5
      WM_MIN=110, WM_HALF_MIN=110, WM_HALF_MAX=110, WM_MAX=110
      preflooding height equal to 20 percent
done.
Analyze...

      main basin size=24160470213 voxels, voxel volume =1.000
                     = 24160470213 mmm3 = 24160471.040 cm3
done.
PostAnalyze...Basin Prior
 0 basins merged thanks to atlas
      ***** 0 basin(s) merged in 1 iteration(s)
      ***** 0 voxel(s) added to the main basin
done.
Weighting the input with prior template

****************TEMPLATE DEFORMATION****************

      second estimation of the COG coord: x=123,y=102, z=118, r=10759 iterations
^^^^^^^^ couldn't find WM with original limits - expanding ^^^^^^

   GLOBAL      CSF_MIN=0, CSF_intensity=9, CSF_MAX=71 , nb = 42714
  RIGHT_CER    CSF_MIN=0, CSF_intensity=10, CSF_MAX=51 , nb = 3276
  LEFT_CER     CSF_MIN=0, CSF_intensity=9, CSF_MAX=42 , nb = 2808
 RIGHT_BRAIN   CSF_MIN=0, CSF_intensity=9, CSF_MAX=76 , nb = 17694
 LEFT_BRAIN    CSF_MIN=0, CSF_intensity=4, CSF_MAX=74 , nb = 17946
    OTHER      CSF_MIN=0, CSF_intensity=31, CSF_MAX=52 , nb = 990
  
                     CSF_MAX  TRANSITION  GM_MIN  GM
    GLOBAL    
  before analyzing :    71,      57,        53,   75
  after  analyzing :    44,      57,        57,   61
   RIGHT_CER  
  before analyzing :    51,      53,        55,   80
  after  analyzing :    51,      54,        55,   60
   LEFT_CER   
  before analyzing :    42,      50,        56,   76
  after  analyzing :    42,      54,        56,   59
  RIGHT_BRAIN 
  before analyzing :    76,      57,        51,   75
  after  analyzing :    44,      57,        57,   61
  LEFT_BRAIN  
  before analyzing :    74,      57,        52,   73
  after  analyzing :    43,      57,        57,   61
     OTHER    
  before analyzing :    52,      66,        77,   92
  after  analyzing :    52,      73,        77,   77
      mri_strip_skull: done peeling brain
      highly tesselated surface with 10242 vertices
      matching...75 iterations

*********************VALIDATION*********************
curvature mean = -0.012, std = 0.010
curvature mean = 75.699, std = 8.484

No Rigid alignment: -atlas Mode Off (basic atlas / no registration)
      before rotation: sse = 3.12, sigma = 4.24
      after  rotation: sse = 3.12, sigma = 4.24
Localization of inacurate regions: Erosion-Dilation steps
      the sse mean is  3.19, its var is  3.44  
      before Erosion-Dilatation  0.12% of inacurate vertices
      after  Erosion-Dilatation  0.00% of inacurate vertices
      Validation of the shape of the surface done.
Scaling of atlas fields onto current surface fields

********FINAL ITERATIVE TEMPLATE DEFORMATION********
Compute Local values csf/gray
Fine Segmentation...50 iterations

      mri_strip_skull: done peeling brain

Brain Size = 2108315 voxels, voxel volume = 1.000 mm3
           = 2108315 mmm3 = 2108.315 cm3


******************************
Saving brainmask.auto.mgz
done

 cp brainmask.auto.mgz brainmask.mgz


#------------------------------------------

Started at Thu Aug 18 20:22:28 CDT 2016
Ended   at Thu Aug 18 20:22:49 CDT 2016
#@#%# recon-all-run-time-hours 0.006
recon-all -s 31313422_15544 finished without error at Thu Aug 18 20:22:49 CDT 2016
done

Thank you!