lh.pial_lgi.fwhm10.fsaverage.mgzare the individual smoothed lgi files (one for each time point) and should not be in the base, only in the .long. directories, so everything is OK.
You can then run qdec and do all kinds of analysis on any of those files and other variables from the qdec table:
qdec --table ./qdec/cross.qdec.table.dat
You will see in the Design tab, that
you can now select e.g. long.thickness-rate under Measure
as the dependent variable.
Hi freesurfer experts I am trying to analyze the longitudinal effects on LGI. I've run all my subject's through the longitudinal processing stream. I set-up my qdec dat file: fsid fsid-base years 100674-0107 100674_base 1.6 100674-0408 100674_base 2.8 100674-0605 100674_base 0 100712-0505 100712_base 0 100712-0708 100712_base 3.2 100712-1006 100712_base 1.4 100724-0605 100724_base 0 100724-0808 100724_base 3.2 100724-1206 100724_base 1.5 100733-0106 100733_base 0 100733-0507 100733_base 1.3 100733-1008 100733_base 2.8 I ran long_mris_slopse for both hemispheres: long_mris_slopes --qdec ./UCSD_subj_NIDA_LGI.qdec.dat --meas pial_lgi --hemi lh --do-avg --do-rate --do-pc1 --do-spc --do-stack --do-label --time years --qcache fsaverage --sd /Studies/UCSDsubjects-NIDA/Cluster_Proc long_mris_slopes --qdec ./UCSD_subj_NIDA_LGI.qdec.dat --meas pial_lgi --hemi rh --do-avg --do-rate --do-pc1 --do-spc --do-stack --do-label --time years --qcache fsaverage --sd /Studies/UCSDsubjects-NIDA/Cluster_Proc i also ran long_qdec_table long_qdec_table --qdec ./UCSD_subj_NIDA_LGI.qdec.dat --cross --out ./qdec/cross.qdec.table.dat then I ran qdec: qdec --table ./qdec/cross.qdec.table.dat I specified pial_lgi as the Measure, and selected years as the covariate when I press Analyze, I get the following error: Error in Analyze: Couldn't open 100674_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgz or mgh file when looking in the directories, I have lh.pial_lgi.fwhm10.fsaverage.mgh files in the 100674-0107.long.100674_base directories: \100674-0107.long.100674_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100724-0605.long.100724_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100674-0107.long.100674_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100724-0605.long.100724_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100674-0408.long.100674_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100724-0808.long.100724_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100674-0408.long.100674_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100724-0808.long.100724_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100674-0605.long.100674_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100724-1206.long.100724_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100674-0605.long.100674_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100724-1206.long.100724_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100712-0505.long.100712_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100733-0106.long.100733_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100712-0505.long.100712_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100733-0106.long.100733_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100712-0708.long.100712_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100733-0507.long.100733_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100712-0708.long.100712_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100733-0507.long.100733_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100712-1006.long.100712_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100733-1008.long.100733_base/surf/lh.pial_lgi.fwhm10.fsaverage.mgh 100712-1006.long.100712_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh 100733-1008.long.100733_base/surf/rh.pial_lgi.fwhm10.fsaverage.mgh but not in the following directories 100674_base/surf 100712_base/surf 100724_base/surf 100733_base/surf How can I fix this? Jon
-- Martin Reuter, Ph.D. Instructor in Neurology Harvard Medical School Assistant in Neuroscience Dept. of Radiology, Massachusetts General Hospital Dept. of Neurology, Massachusetts General Hospital Research Affiliate Computer Science and Artificial Intelligence Lab, Dept. of Electrical Engineering and Computer Science, Massachusetts Institute of Technology A.A.Martinos Center for Biomedical Imaging 149 Thirteenth Street, Suite 2301 Charlestown, MA 02129 Phone: +1-617-724-5652 Email: mreuter@nmr.mgh.harvard.edu reuter@mit.edu Web : http://reuter.mit.edu