[Freesurfer] QDEC on multiple datasets
Hello, I have run qcache on two separate datasets, and now would like to combine them and look at the data using QDEC. What is the proper way to go about doing this? Will I need to run an entirely separate instance of qcache on all of the datasets at once? Thanks for any information! ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
[Freesurfer] Qdec Cluster Size
Hello, I am wondering if there is an easy way to determine the size of a cluster of significant voxels resulting from a QDEC analysis? I have created a label and mapped the label to all of the subjects, but didn't know if there was a way to extract information about cluster size. Thanks, Miranda ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
[Freesurfer] Qdec "map label to subjects" error
Hello, I have a question in regards to the "map label to subjects" feature in Qdec. Basically, I draw and save a label, and then try to map the label to all of the subjects in my SUBJECTS_DIR, but while running mri_label2label, I get this error: ERROR: there is a vertex in the label that cannot be matched to the surface. This usually occurs when the label and surface are from different subjects or hemispheres or the surface has been changed since the label was created. Label point 7: vno = 166358, max = 163842 command failed: mri_label2label --srclabel /home/bfs-raid1/ryanm/FREESURFER/142_FAE2_blade/v4/freesurfer-from-blade/qdec/lh.parahippocampal_cp --srcsubject fsaverage --trgsubject 18208 --trglabel /home/bfs-raid1/ryanm/FREESURFER/142_FAE2_blade/v4/freesurfer-from-blade/qdec/lh.parahippocampal_cp --regmethod surface --hemi lh I have three groups I am trying to compare, 2 proband groups, and 1 control group. So, I constructed separate .dat files and label files for each- one comparing controls vs. group1, and the other comparing controls vs. group2. I seem to be able to run analyses fine on the data, I am just having problems with the "map label to subjects" feature. The order in my .dat files does differ from the order of datasets in my SUBJECTS_DIR, I don't know if this has anything to do with my error. Any advice/suggestions would be greatly appreciated. Thanks! Miranda Nelson ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
[Freesurfer] Qdec Error
Hello, I am seeing the following error in the terminal window when I run an analysis in QDEC: INFO: ignoring tag Creator INFO: ignoring tag SUBJECTS_DIR INFO: ignoring tag SynthSeed INFO: demeaning continous variables Continuous Variable Means (all subjects) Class Means of each Continuous Variable 1 groupfivecontrol 2 groupfivepatient WARNING: Marker for class groupfivecontrol was invalid. WARNING: Color for class groupfivecontrol was invalid. WARNING: Marker for class groupfivepatient was invalid. WARNING: Color for class groupfivepatient was invalid. Completed loading of analyzed data. ERROR: gdfOffsetSlope: variable number 0 exceeds max 0 I am looking for differences in cortical thickness between groups. Could this error be affecting my results? Regards, Miranda ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
