Yes, create the new base with 4 timepoints. And rerun the long for each
timepoint.
Yujing
From: freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of Eszter Boros
Sent: Friday, January 17, 2025 1:00 PM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] longitudinal analyses, more than 2 timepoints
External Email - Use Caution
I apologize!
I think I have just realized that I can create one base based on 4 time points,
right?
recon-all -base <templateid> -tp <tp1id> -tp <tp2id> -tp <tp3id> -tp <tp4id>
-all
Thank you!
Eszter Boros <boros.eszter0...@gmail.com<mailto:boros.eszter0...@gmail.com>>
ezt írta (időpont: 2025. jan. 17., P, 12:55):
Thank you for the quick response! I appreciate it.
I am not sure what you mean by rerun specifically. Should I rerun separate
analyses for 0-6 months, 0-1year, and 0-1.5 years? Or can I analyze all of them
in the same model?
I do not think I should rerun 0-6months if that is already analyzed, right?
Thank you!
Huang, Yujing <yhuan...@mgh.harvard.edu<mailto:yhuan...@mgh.harvard.edu>> ezt
írta (időpont: 2025. jan. 15., Sze, 16:20):
Here is the tutorial for longitudinal processing - MailScanner has detected a
possible fraud attempt from "secure-web.cisco.com" claiming to be
https://surfer.nmr.mgh.harvard.edu/fswiki/LongitudinalProcessing<https://secure-web.cisco.com/15H1lCCgBPzjRd89RtWHk9KzzXEM40qS4p5I4M8lLImOuILgk9B2URL3DUZcCGz6YEq5oacf5Nj2RpX0eQkDbqxV4PjEohumGH0gd3YamnnV5d-nLHWPquKo9tU8Uo7kq_umH14-6v9qKUmsJelShkrsI4WlFL8vRp5PjRNlcPS8ZOvYdesO-AqZgMyJmEtm_QOWDyJxZJCLz8DDdINaGy3rGaTjQTu5cknKbGlhOrxDO_75AymtC3xHgaloIN6C2cwaMu7qxR40P7dYtSmWlD42vFTV5u2mXCYBaxPmwjh-GpJuj8XLSASmlPcTOVm3FCDrZ7QuE6ou82H_-KwR6OA/https%3A%2F%2Fsurfer.nmr.mgh.harvard.edu%2Ffswiki%2FLongitudinalProcessing>
The 'base' and 'long' steps of the longitudinal processing should be re-run
after adding new timepoints.
Yujing
From:
freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu>
<freesurfer-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu>>
On Behalf Of Eszter Boros
Sent: Wednesday, January 15, 2025 1:52 PM
To: Freesurfer support list
<freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu>>
Subject: [Freesurfer] longitudinal analyses, more than 2 timepoints
External Email - Use Caution
Dear FreeSurfer Team,
We are analyzing some longitudinal data (baseline [0], 6 months, 1 year, 1.5
years) using FreeSurfer 7.4.1.
We already analyzed two timepoints (basline[0] and 6 months) but now we are
trying to look at 4 timepoints in total.
I was wondering what the best way would be to do this. For the longitudinal
processing, should we create 3 bases/within-subject templates between 0-6
months (this is already done), 0-1year, 0-1.5years), or between 0-6months,
6months-1year, 1year-1.5years. Or both?
Also, is it okay to correct/edit only the bases?
After the longitudinal processing, can we create a Longitudinal Table and apply
the two-stage model (LongitudinalTwoStageModel) method? Or because of the 4
time points, we need to apply something else.
Thank you for your help in advance!
All the best, Eszter
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