Hi Manuel,

smoothing is usually only necessary for surface data.

You should have crated the subfields on top of the longitudinal directories, so:

recon-all -long <tpid> <baseid> -hippocampal-subfields-T1

Else they will only be available in the cross dirs. The longs will have better reliability.

Best, Martin

On 12 May 2017, at 10:30, Manuel Delgado freesurfer.mda@gmail.com wrote:

Dear all,

I set out to perform a longitudinal analysis of hippocampal subfields. I have already edited the cross and/or the bases when necessary and obtained the longs.

Then I have obtained the hippocampal subfields by the automated pipeline: recon-all -s <subject> -hippocampal-subfields-T1.

Now I am going to create the qdec table to proceed with the analysis, but I don't know whether I have to smooth the data by recon-all -long <tpid> <baseid> -qcahe before the analysis, or given that hippocampal subregions have been extracted by using its own pipeline it is not necessary to do any smoothing.

Thanks

-- Manuel Delgado Alvarado, MD Neurology Department Neuroimaging Unit Valdecilla Biomedical Research Institute, IDIVAL Santander, SPAIN _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer