Hi Lisa,

for a subject with N time points, you will have 2N+1 directories:

Stage1: N cross sectionally (independently) processed Stage2: 1 base/template, representing average anatomy of this subject Stage3: N longitudinally processed subject that use some joint information from the cross (stage1) and base (stage2), these are the ones you will use for your final measurements.

See https://surfer.nmr.mgh.harvard.edu/fswiki/LongitudinalProcessing for details (there are also links to - Editing - tutorial - statistics - citations

etc.

Cheers, Martin

On 11/20/2015 04:56 AM, Lisa Delalande wrote:

Hi,

I would like to know if, in doing a longitudinal study (i.e. 2 or 3 MRI each subjects), this is usual to have many file for one subject (see the picture, 5 file for one subject with two MRI : a0009_1 = MRI 1 and a0009_2 = MRI 2) ? Because in the future I will have around 100 subjects with 3 MRI each so I will have a lot of file to handle with ...

Thanks in advance !

Friendly

Lisa

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