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
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