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looking further into the archives, I see that the -sdf flag can be used. I’m still uncertain about the -ngroups flag. I see at least a couple other users have asked about this but I don’t see a response. In the present case, if there are 60 slices and they are accelerated by a factor of 6, does one specify -ngroups 6 or -ngroups 10?
Joe
On Jun 2, 2019, at 19:46, Joseph Dien jdien07@mac.com wrote:
External Email - Use CautionHi Doug, I’m happy to see that FreeSurfer6 provides enhanced support for slice timing. I’m trying to run it on some multi-slice data. May I ask you for some guidance on how to use the new preproc-sess options? As I understand it, I would specify “-ngroups 10” because the data were collected in ten groups of six slices at a time? I’m not sure how to specify “-sliceorder”. Slice times are below. Thanks for any help you can provide.
Joe
0 877.500000000000 502.500000000000 125 1005 627.500000000000 252.500000000000 1130 752.500000000000 377.500000000000 0 877.500000000000 502.500000000000 125 1005 627.500000000000 252.500000000000 1130 752.500000000000 377.500000000000 0 877.500000000000 502.500000000000 125 1005 627.500000000000 252.500000000000 1130 752.500000000000 377.500000000000 0 877.500000000000 502.500000000000 125 1005 627.500000000000 252.500000000000 1130 752.500000000000 377.500000000000 0 877.500000000000 502.500000000000 125 1005 627.500000000000 252.500000000000 1130 752.500000000000 377.500000000000 0 877.500000000000 502.500000000000 125 1005 627.500000000000 252.500000000000 1130 752.500000000000 377.500000000000
Joseph Dien, PhD Senior Research Scientist Department of Human Development and Quantitative Methodology University of Maryland, College Park http://joedien.com http://joedien.com/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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Joseph Dien, PhD Senior Research Scientist Department of Human Development and Quantitative Methodology University of Maryland, College Park http://joedien.com