[Freesurfer] Quantifying volumes
Dear Douglas, I have a segmented gyrus curvature file (.curv or .w) and I would like to calculate the volume (and other statistics) of this gyrus. I currently only know mris_anatomical_stats to perform that, but requiring a '.label' file. Can I extract statistics directly from the ".curv" file? Or can I convert directly from .curv to .label in order to extract these statistics? As another option, is it feasible to convert the '.curv' file to nifti volume (mri_surf2vol), binarize it (mri_binarize), and then convert to label (mri_cor2label)? What does the output nifti file from 'mri_surf2vol' contain? Does it contain the complete volume behind the surface? Or does it only contain the surface over the 3D space? Thank you very much in advance for your help! Best regards, Josue ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
Re: [Freesurfer] Quantifying volumes
Dear Douglas, I have a ".curv" file that contains the curvature information inside an automatically delineated ROI and 0 everywhere else. I would like to calculate the volume of this ROI, Can I extract statistics directly from the ".curv" file? Best regards, Josue From: freesurfer-boun...@nmr.mgh.harvard.edu on behalf of Douglas N Greve Sent: Tuesday, October 4, 2016 9:41 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Quantifying volumes What is the nature of the segmentation? Is it just a binary (1=in, 0=out) segmentation? And what file format? In general we don't use .w anymore, but it can be converted into something else. doug On 10/03/2016 12:35 PM, Josue Luiz Dalboni Da Rocha wrote: > > Dear Douglas, > > > I have a segmented gyrus curvature file (.curv or .w) and I would like > to calculate the volume (and other statistics) of this gyrus. > > > I currently only know mris_anatomical_stats to perform that, but > requiring a '.label' file. > > > Can I extract statistics directly from the ".curv" file? > > > Or can I convert directly from .curv to .label in order to extract > these statistics? > > > As another option, is it feasible to convert the '.curv' file to nifti > volume (mri_surf2vol), binarize it (mri_binarize), and then convert to > label (mri_cor2label)? > > > What does the output nifti file from 'mri_surf2vol' contain? Does it > contain the complete volume behind the surface? Or does it only > contain the surface over the 3D space? > > > Thank you very much in advance for your help! > > > Best regards, > > Josue > > > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail. ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Re: [Freesurfer] Quantifying volumes
Dear Bruce, Thank you very much for your answer! Can I convert the data from '.curv' to '.label' in order to extract the volume? What I was trying to do was to convert the '.curv' file to nifti volume (mri_surf2vol), binarize it (mri_binarize), and then convert to label (mri_cor2label). Is it a correct way to extract the volumes from a '.curv' file? Best regards, Josue From: freesurfer-boun...@nmr.mgh.harvard.edu on behalf of Bruce Fischl Sent: Wednesday, October 5, 2016 3:30 PM To: Freesurfer support list Subject: Re: [Freesurfer] Quantifying volumes Hi Josue the *.curv won't help you with the volume. If it is a label file you should be able to give it to mris_anatomical_stats with -l to compute the volume cheers Bruce On Wed, 5 Oct 2016, Josue Luiz Dalboni Da Rocha wrote: > Dear Douglas, > > I have a ".curv" file that contains the curvature information inside an > automatically delineated ROI and 0 everywhere else. > I would like to calculate the volume of this ROI, > > Can I extract statistics directly from the ".curv" file? > > Best regards, > Josue > > From: freesurfer-boun...@nmr.mgh.harvard.edu > on behalf of Douglas N Greve > > Sent: Tuesday, October 4, 2016 9:41 PM > To: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Quantifying volumes > > What is the nature of the segmentation? Is it just a binary (1=in, > 0=out) segmentation? And what file format? In general we don't use .w > anymore, but it can be converted into something else. > > doug > > > On 10/03/2016 12:35 PM, Josue Luiz Dalboni Da Rocha wrote: >> >> Dear Douglas, >> >> >> I have a segmented gyrus curvature file (.curv or .w) and I would like >> to calculate the volume (and other statistics) of this gyrus. >> >> >> I currently only know mris_anatomical_stats to perform that, but >> requiring a '.label' file. >> >> >> Can I extract statistics directly from the ".curv" file? >> >> >> Or can I convert directly from .curv to .label in order to extract >> these statistics? >> >> >> As another option, is it feasible to convert the '.curv' file to nifti >> volume (mri_surf2vol), binarize it (mri_binarize), and then convert to >> label (mri_cor2label)? >> >> >> What does the output nifti file from 'mri_surf2vol' contain? Does it >> contain the complete volume behind the surface? Or does it only >> contain the surface over the 3D space? >> >> >> Thank you very much in advance for your help! >> >> >> Best regards, >> >> Josue >> >> >> >> ___ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > Phone Number: 617-724-2358 > Fax: 617-726-7422 > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the e-mail > contains patient information, please contact the Partners Compliance HelpLine > at > http://www.partners.org/complianceline . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. > > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Re: [Freesurfer] Quantifying volumes
Dear Doug, Thank you very much for your advice! We get to extract results for the volumes from a ".curv file encoded ROI" using your recommended command lines (mri_binarize and mri_segstats ), but unfortunately the results are much smaller (around 3 times) than when we extract total gray matter volumes from a respective ".label file encoded ROI" using mris_anatomical_stats . Example: Volumes from a ".curv file encoded ROI" using your recommended command lines (mri_binarize and mri_segstats): Subject1 = 1090 Subject2 = 1181 Subject3 = 713 Subject4 = 1230 Volumes from a respective ".label file encoded ROI" (mris_anatomical_stats): Subject1 = 3497 Subject2 = 3786 Subject3 = 2268 Subject4 = 3491 Are the volumes extracted from a ".curv file encoded ROI" (using mri_binarize and mri_segstats) an estimation of the total gray matter volumes? Why these values are differing that much? Thank you very much, Josue Dalboni From: freesurfer-boun...@nmr.mgh.harvard.edu on behalf of Douglas N Greve Sent: Wednesday, October 5, 2016 5:19 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Quantifying volumes I would binarize the curv file with mri_binarize --i lh.yourcurvfile --abs --min .001 --o lh.yourcurvfilebin.mgh Then compute the volume with mri_segstats --seg lh.yourcurvfilebin.mgh --id 1 --i lh.volume --accumulate --sum lh.vol.yourcurv.sum On 10/05/2016 09:09 AM, Josue Luiz Dalboni Da Rocha wrote: > Dear Douglas, > > I have a ".curv" file that contains the curvature information inside an > automatically delineated ROI and 0 everywhere else. > I would like to calculate the volume of this ROI, > > Can I extract statistics directly from the ".curv" file? > > Best regards, > Josue > > From: freesurfer-boun...@nmr.mgh.harvard.edu > on behalf of Douglas N Greve > > Sent: Tuesday, October 4, 2016 9:41 PM > To: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Quantifying volumes > > What is the nature of the segmentation? Is it just a binary (1=in, > 0=out) segmentation? And what file format? In general we don't use .w > anymore, but it can be converted into something else. > > doug > > > On 10/03/2016 12:35 PM, Josue Luiz Dalboni Da Rocha wrote: >> Dear Douglas, >> >> >> I have a segmented gyrus curvature file (.curv or .w) and I would like >> to calculate the volume (and other statistics) of this gyrus. >> >> >> I currently only know mris_anatomical_stats to perform that, but >> requiring a '.label' file. >> >> >> Can I extract statistics directly from the ".curv" file? >> >> >> Or can I convert directly from .curv to .label in order to extract >> these statistics? >> >> >> As another option, is it feasible to convert the '.curv' file to nifti >> volume (mri_surf2vol), binarize it (mri_binarize), and then convert to >> label (mri_cor2label)? >> >> >> What does the output nifti file from 'mri_surf2vol' contain? Does it >> contain the complete volume behind the surface? Or does it only >> contain the surface over the 3D space? >> >> >> Thank you very much in advance for your help! >> >> >> Best regards, >> >> Josue >> >> >> >> ___ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > Phone Number: 617-724-2358 > Fax: 617-726-7422 > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the e-mail > contains patient information, please contact the Partners Compliance HelpLine > at > http://www.partners.org/complianceline . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. > > > ___ > Freesurfer mailing list > Freesurfer@nmr.mgh.
Re: [Freesurfer] Quantifying volumes
Dear Doug, From the curvature file of the ROI (selected portion of surface), we extract the volume using this 2 command lines: mri_binarize --i $D_load/lh_masked_all.curv --max -.001 --o $D_load/lh_masked_all_bin.mgh mri_segstats --seg $D_load/lh_masked_all_bin.mgh --id 1 --i $SUBJECTS_DIR/$subj/surf/lh.volume --accumulate --sum $D_load/lh_masked_all_bin.txt From the label file of the same ROI, we extract the volume using the following command line: mris_anatomical_stats -l $SUBJECTS_DIR/$subj/label/labelsAtlas2009/lh_masked_all.label -f $outD/lh_masked_all_Volume $subj lh As the '.curv' file and the '.label' file represent the same ROI, we were expecting to get the same volume (total gray matter volume of the selected portion of surface). But the results using the first method are always about 3 time higher than using the second method. We would like to understand what is going on, because for some selected portions of ROI we just have the '.curv' file to extract the volume from. Thank you very much for your help! Best regards, Josue From: freesurfer-boun...@nmr.mgh.harvard.edu on behalf of Douglas Greve Sent: Friday, October 14, 2016 5:54 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Quantifying volumes please send command lines On 10/14/16 6:36 AM, Damien MARIE wrote: Hi, Just adding a word about the e-mail of ma colleague Josue. What he meant is that he extracted volumes for exactly the same ROI (a merging of destrieux labels of Hechl’s gyrus, Heschl's sulcus and planum temporale) using 1- a .curv file of this ROI, mri_binarize and mri_segstats or 2- a .label file of this ROI and mris_anatomical_stats. We get a different volume output (ratio of difference between the 2 methods = approx. 2.5, similar to mean thickness I would say…), so we would like to understand what is happening exactly. Using the method 1, it’s actually a surface measurement we get no? Would that be possible to convert a .cuvr file to a .label file ? Thank you and best, Damien Josue Luiz Dalboni Da Rocha Wed, 12 Oct 2016 07:26:32 -0700 Dear Doug, Thank you very much for your advice! We get to extract results for the volumes from a ".curv file encoded ROI" using your recommended command lines (mri_binarize and mri_segstats ), but unfortunately the results are much smaller (around 3 times) than when we extract total gray matter volumes from a respective ".label file encoded ROI" using mris_anatomical_stats . Example: Volumes from a ".curv file encoded ROI" using your recommended command lines (mri_binarize and mri_segstats): Subject1 = 1090 Subject2 = 1181 Subject3 = 713 Subject4 = 1230 Volumes from a respective ".label file encoded ROI" (mris_anatomical_stats): Subject1 = 3497 Subject2 = 3786 Subject3 = 2268 Subject4 = 3491 Are the volumes extracted from a ".curv file encoded ROI" (using mri_binarize and mri_segstats) an estimation of the total gray matter volumes? Why these values are differing that much? Thank you very much, Josue Dalboni From: freesurfer-boun...@nmr.mgh.harvard.edu<http://nmr.mgh.harvard.edu> http://nmr.mgh.harvard.edu>> on behalf of Douglas N Greve http://nmr.mgh.harvard.edu>> Sent: Wednesday, October 5, 2016 5:19 PM To: freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu> Subject: Re: [Freesurfer] Quantifying volumes I would binarize the curv file with mri_binarize --i lh.yourcurvfile --abs --min .001 --o lh.yourcurvfilebin.mgh Then compute the volume with mri_segstats --seg lh.yourcurvfilebin.mgh --id 1 --i lh.volume --accumulate --sum lh.vol.yourcurv.sum On 10/05/2016 09:09 AM, Josue Luiz Dalboni Da Rocha wrote: > Dear Douglas, > > I have a ".curv" file that contains the curvature information inside an > automatically delineated ROI and 0 everywhere else. > I would like to calculate the volume of this ROI, > > Can I extract statistics directly from the ".curv" file? > > Best regards, > Josue > > From: freesurfer-boun...@nmr.mgh.harvard.edu<http://nmr.mgh.harvard.edu> > http://nmr.mgh.harvard.edu>> on > behalf of Douglas N Greve > http://nmr.mgh.harvard.edu>> > Sent: Tuesday, October 4, 2016 9:41 PM > To: freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu> > Subject: Re: [Freesurfer] Quantifying volumes > > What is the nature of the segmentation? Is it just a binary (1=in, > 0=out) segmentation? And what file format? In general we don't use .w > anymore, but it can be converted into something else. > > doug > > > On 10/03/2016 12:35 PM, Josue Luiz Dalboni Da Rocha wrote: >> Dear Douglas, >> >> >> I have a segmented gyrus cur
Re: [Freesurfer] Quantifying volumes
Dear Doug, Thank you for your reply! This label on this specific case is basically the sum of the labels from Heschl's Gyrus, Heschl's Sulcus and Planum temporale. The labels from Heschl's Gyrus, Heschl's Sulcus and Planum temporale are firstly produced inside 'Recon-all'. The aggregation of these 3 labels is produced by the following command line: mri_mergelabels -i $SUBJECTS_DIR/$subj/label/labelsAtlas2009/lh.G_temp_sup-G_T_transv.label -i $SUBJECTS_DIR/$subj/label/labelsAtlas2009/lh.G_temp_sup-Plan_tempo.label -i $SUBJECTS_DIR/$subj/label/labelsAtlas2009/lh.S_temporal_transverse.label -o $SUBJECTS_DIR/$subj/label/labelsAtlas2009/lh_masked_all.label The volume calculated by 'mris_anatomical_stats' of the aggregated label is equal to the sum of the volumes from these 3 labels produced during "Recon-all'. But the issue is these values differ from the one obtained using "mri_binarize" and "mri_segstats" based on the '.curv' file of the portion of surface (Heschl's Gyrus + Heschl's Sulcus + Planum temporale). Best regards, Josue From: freesurfer-boun...@nmr.mgh.harvard.edu on behalf of Douglas Greve Sent: Friday, October 14, 2016 7:01 PM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Quantifying volumes How did you create the label ? On 10/14/16 12:43 PM, Josue Luiz Dalboni Da Rocha wrote: Dear Doug, From the curvature file of the ROI (selected portion of surface), we extract the volume using this 2 command lines: mri_binarize --i $D_load/lh_masked_all.curv --max -.001 --o $D_load/lh_masked_all_bin.mgh mri_segstats --seg $D_load/lh_masked_all_bin.mgh --id 1 --i $SUBJECTS_DIR/$subj/surf/lh.volume --accumulate --sum $D_load/lh_masked_all_bin.txt From the label file of the same ROI, we extract the volume using the following command line: mris_anatomical_stats -l $SUBJECTS_DIR/$subj/label/labelsAtlas2009/lh_masked_all.label -f $outD/lh_masked_all_Volume $subj lh As the '.curv' file and the '.label' file represent the same ROI, we were expecting to get the same volume (total gray matter volume of the selected portion of surface). But the results using the first method are always about 3 time higher than using the second method. We would like to understand what is going on, because for some selected portions of ROI we just have the '.curv' file to extract the volume from. Thank you very much for your help! Best regards, Josue From: freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu> <mailto:freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Douglas Greve <mailto:gr...@nmr.mgh.harvard.edu> Sent: Friday, October 14, 2016 5:54 PM To: freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu> Subject: Re: [Freesurfer] Quantifying volumes please send command lines On 10/14/16 6:36 AM, Damien MARIE wrote: Hi, Just adding a word about the e-mail of ma colleague Josue. What he meant is that he extracted volumes for exactly the same ROI (a merging of destrieux labels of Hechl’s gyrus, Heschl's sulcus and planum temporale) using 1- a .curv file of this ROI, mri_binarize and mri_segstats or 2- a .label file of this ROI and mris_anatomical_stats. We get a different volume output (ratio of difference between the 2 methods = approx. 2.5, similar to mean thickness I would say…), so we would like to understand what is happening exactly. Using the method 1, it’s actually a surface measurement we get no? Would that be possible to convert a .cuvr file to a .label file ? Thank you and best, Damien Josue Luiz Dalboni Da Rocha Wed, 12 Oct 2016 07:26:32 -0700 Dear Doug, Thank you very much for your advice! We get to extract results for the volumes from a ".curv file encoded ROI" using your recommended command lines (mri_binarize and mri_segstats ), but unfortunately the results are much smaller (around 3 times) than when we extract total gray matter volumes from a respective ".label file encoded ROI" using mris_anatomical_stats . Example: Volumes from a ".curv file encoded ROI" using your recommended command lines (mri_binarize and mri_segstats): Subject1 = 1090 Subject2 = 1181 Subject3 = 713 Subject4 = 1230 Volumes from a respective ".label file encoded ROI" (mris_anatomical_stats): Subject1 = 3497 Subject2 = 3786 Subject3 = 2268 Subject4 = 3491 Are the volumes extracted from a ".curv file encoded ROI" (using mri_binarize and mri_segstats) an estimation of the total gray matter volumes? Why these values are differing that much? Thank you very much, Josue Dalboni From: freesurfer-boun...@nmr.mgh.harvard.edu<http://nmr.mgh.harvard.edu> http://nmr.mgh.harvard.edu>> on behalf
[Freesurfer] White matter volume of a costumized Gyrus
Dear Freesurfer team, I am working with calculated volumes of a gyrus (a costumized label). I currently use mris_anatomical_stats to calculate the volumes of my gyrus (in label format). According to the freesurfer tutorial (as I understood), one of the stats outputted from mris_anatomical_stats is the volume of the gray matter surrounding the white/gray matter border (a surface) specified by the inputted label. We are actually interested in the white matter volume (instead of gray matter volume) inside this ROI (a gyrus in our case) specified by the label. I didn't find yet a command in freesurfer from where I can extract the white matter volume of a gyrus from a costumized label. Could someone advise me? Best regards, Josue ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
[Freesurfer] Gray matter volume calculation
Dear Freesurfer team, We are analyzing the gray matter volume of some customized labels, using mris_anatomical_stats. We are wondering about some characteristics of the obtained volume. Is the volume of a label (as calculated by mris_anatomical_stats) the sum of the volume elements of each vertex contained in that label (considering the volume elements per vertices stored in the file '?h.volume' inside the 'surf' folder)? Is the 'volume element per vertex' (?h.volume) calculated from the 'white surface area element per vertex' (?h.white), 'pial surface area element per vertex' (?h.pial) and 'thickness element per vertex' (?h.thickness) ? What would be the formula to calculate 'volume element per vertex'? Bests, Josue ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
[Freesurfer] Mean Curvature for whole hemisphere
External Email - Use Caution Dear FreeSurfer, Why an average whole hemispherical value for mean curvature is not provided by Qdec? Is there geometrical reason? Best regards, Josue ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
