Hi guys,
We have some longitudinal scans in which the time1 (T1) scans were processed with FS 5.1, and the T2/T3 scans haven't been processed yet.
I'm trying to assess whether the differences between FS 5.1 and 5.3 warrant us re-running the T1 scans under FS 5.3.
I see two possible options:
1) Process all "cross-sectional" runs under FS 5.1. i.e., we already have T1 under FS 5.1, so do the cross-runs of T2/T3 under 5.1 as well. (I'm assuming that it wouldn't be desirable to have a mix of versions at the cross-sectional stage). Then switch
to using FS 5.3 for creating the template (-base) and longitudinal (-long) data.
2) Re-process the cross-sectional scans for T1 using FS 5.3, and do everything with FS 5.3.
Do you have any reason to expect relevant differences in the final -long output between these two approaches?
And, if approach (2) is necessary, do we need to re-run the T1 through FS 5.3 with the "-clean" flag? i.e,. if we were to re-run the cross-sectional version of the T1 scan using FS 5.3, but keeping previous edits, would that potentially bias the T1 scan
in some fashion, since the T2/T3 scans will be run fresh in FS 5.3 without any prior manual edits?
thanks,
-MH
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Conte Center for the Neuroscience of Mental Disorders
Washington University School of Medicine
Department of Psychiatry, Box 8134
660 South Euclid Ave.
Tel: 314-747-6173
St. Louis, MO 63110
Email: mharms@wustl.edu