Hi Sandra,
this of course will highly depend on the differences in your sequence, hard to tell otherwise. But why dont you simply use the same sequence in the first place? That would be optimal. Mostly, results from different sequences are hard to compare quantitatively, especially for fMRI, IMHO.
Good luck,
Bas
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Dr. S.F.W. Neggers
Division of Brain Research
Rudolf Magnus Institute for Neuroscience
Utrecht University Medical Center
Visiting : Heidelberglaan 100, 3584 CX Utrecht
Room B.01.1.03
Mail : Huispost B01.206, P.O. Box 85500
3508 GA Utrecht, the Netherlands
Tel : +31 (0)88 7559609
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E-mail : [log in to unmask]
Web : http://www.neuromri.nl/people/bas-neggers
: http://www.brainsciencetools.com (CEO)
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________________________________________
From: SPM (Statistical Parametric Mapping) [[log in to unmask]] on behalf of Sandra Chanraud [[log in to unmask]]
Sent: Friday, July 20, 2012 12:20 PM
To: [log in to unmask]
Subject: [SPM] Longitudinal resting state study
Dear all,
We are planning to scan people who already had a MRI protocol about 2 years ago. The functional sequence that we will be using is different from the previous one, so that we wonder about the validity of comparing data from the 2 different scans.
Any advise?
Thanks in advance.
Best,
Sandra.
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