Re: [Marsbar-users] compatibility of anatomical ROIs across SPMversions?
Status: Beta
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matthewbrett
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From: Hammers, A. <ale...@cs...> - 2007-08-30 08:52:39
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Dear Todd, I would - outline ROIs on native images in the future ;-) - try the SPM2 Deformations toolbox to get your ROIs into "SPM2native" = space; remember to use nearest neighbour interpolation - re-normalise those "SPM2native" ROIs using the spatial deformations = derived from the Unified Segmentation (SEGMENT button) in SPM5, again = making sure to use nearest neighbour interpolation It's possible that the two interpolations will make your ROIs a bit = flayed at the edges - but if it already gets them into the proper place = we can see about details later. HTH, Alexander -----Original Message----- From: mar...@li... = [mailto:mar...@li...] On Behalf Of Todd = Girard Sent: 30 August 2007 04:56 To: mar...@li... Subject: [Marsbar-users] compatibility of anatomical ROIs across = SPMversions? Dear Matthew and marsbar-users: I have recently updated some old analyses from spm99 and getting with = the times have used spm5. For obvious and other reasons I'd like to go = with the latter. Along the route I have anatomical ROIs that were = manually traced based on structural images normalized in spm2. I would = like to use these as ROI masks for the former spm5 results. However, due = to many differences in preprocessing and normalization routines I = haven't found an easy way to make these images compatible (i.e., after = playing around and comparing images they are obviously not aligned). The = simplest answer would seem to be to just rerun the functional analysis = in spm2 from which the ROIs were also created. However, I'm wondering if = there is another relatively simple method to apply the spm2 normalized = ROIs as masks in spm5? Anyone else try anything similar? Please refer me on if this is deemed more of an SPM question, but as = this group works more specifically with ROIs I thought I'd post here = first. I've checked both list archives without much luck. Thanks, Todd ******************************************** Todd Girard, PhD Assistant Professor, Department of Psychology Member, School of Graduate Studies Ryerson University, Toronto, ON, Canada =A0 Research Scientist (Affiliate Status) Clinical Research Department and Schizophrenia Department Centre for Addiction & Mental Health, Toronto, ON -------------------------------------------------------------------------= This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Marsbar-users mailing list Mar...@li... https://lists.sourceforge.net/lists/listinfo/marsbar-users |