You can convert the ROI into a label (mri_vol2label), then "paint" the label onto the nearest cortex using mri_label2label with the --paint option. dmax controls the maximum distance, so you'll need to set that pretty large. You can then load the label onto the surface to see where it landed.
On 5/15/19 6:19 PM, Nillo, Ryan Michael R wrote: > > External Email - Use Caution > > Hi Bruce, > > We want to study whether or not presence of periventricular > heterotopias affect the thickness, volume, or surface area of the > nearest cortical ROI. Since the condition we are studying is caused by > failure of neurons to migrate to the cortex, we hypothesized that the > nearest cortical ROI would be thinner/smaller compared to those > without the heterotopia. > > Ryan Michael Nillo > Staff Research Associate I > University of California San Francisco > Department of Radiology and Biomedical Imaging > >> On May 15, 2019, at 3:10 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu >> <mailto:fis...@nmr.mgh.harvard.edu>> wrote: >> >> Hi Ryan >> >> I don't think projection of that kind of ROI is well-posed. Different >> parts of it are probably closest to wildly different parts of cortex. >> What are you trying to acheive? >> >> cheers >> Bruce >> >> >> On Wed, 15 May 2019, Nillo, Ryan Michael R wrote: >> >>> External Email - Use Caution >>> Hello FreeSurfer users/developers, >>> I have a subcortical ROI that I want to project to the nearest >>> cortical vertex (see screenshot). So >>> far, I have used the command mri_vol2surf --mov >>> subject/mri/lh.het.nii --reg >>> subject/mri/transforms/talairach.lta --hemi lh —o >>> subject/surf/lh.het.mgh to project these voxels to >>> the nearest vertex on the cortex. I am not sure if this is the >>> correct way to do this because using >>> mris_anatomical_stats on the result does not produce any thickness >>> file. Any help would be greatly >>> appreciated. >>> [IMAGE] >>> Ryan Michael Nillo >>> Staff Research Associate I >>> University of California San Francisco >>> Department of Radiology and Biomedical Imaging >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu> >> https://urldefense.proofpoint.com/v2/url?u=https-3A__mail.nmr.mgh.harvard.edu_mailman_listinfo_freesurfer&d=DwICAg&c=iORugZls2LlYyCAZRB3XLg&r=-dSNp2WfY7DySdV4_Sqc4m6hoXOmD3OskcWVyhGbe1U&m=70PkXR7pfoOtgUn0p3XVxYSvqoKz7NOM0ksGg_OyUmg&s=4-bL_WUolc7CdEE6RovlOGA5oFWwlecwJNlG57CXOR0&e= > > > _______________________________________________ > 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
