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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by mbudde[/i] [br]Hello all, I have a few questions about the run*_Stability.txt files that are produced as part of the functional scan data pipeline to bristol. Could someone tell me how the motion parameters contained in the run*_Stability.txt files are produced, and in what units the data is in? Is this something that is produced by qastats? My scans are collected axially (64 64 34), so it appears that in the file, the values of x and y are near the center of the volume in units of voxels, since the x & y values are about (32 32) for each slice of each volume, and the values for y are about 1. So, to find the shift in x of the ith volume and the jth slice, would I do: shiftx= (x(1,j) - x(i,j)) * voxelsize Am I on the right track here? Thanks, matt _____________________________ Matthew Budde Associate in Research Center for Cognitive Neuroscience Duke University B203, LSRC Durham, NC 27708 (919) 668-2299 mbudde@duke.edu [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.