Hello All,
Our lab is trying to apply subject-specific ROIs drawn on
non-normalized data in order to mask 1st level SPM analyses. The ROI
files are .img files with headers, and they have been taken through the
exact same reorientation procedure as the anatomical data. The
functional data has also been slice time corrected and realigned.
(Please note: the anatomical, functional, and ROI .img files are never
normalized, but they are instead 'resliced' using the coregistration
tool.)
The program used to create the ROIs encodes them as 'labels' with an
arbitrary number assigned to each label, so IMcalc was used to convert
these .img files into binary masks for each ROI. We have PickAtlas
loaded, so SPM Results calls upon the wfu_spm_getSPM2_conj (v2.50)
function when we request to specify a region-of-interest. After
choosing the desired ROI, the ROI is automatically resliced and the
following error message pops up:
Mask image rotated/sheared!
(relative to SPM image)
Can't use for SVC.
Within the Matlab window the following error message is present:
> In wfu_spm_getSPM2_conj at 523
In <a
href="error:\\Gall\Programs\MATLAB\spm2\toolbox\WFU_PickAtlas\spm_getSPM.m,14,1">spm_getSPM
at 14</a>
In <a href="error:\\Gall\Programs\MATLAB\spm2\spm_results_ui.m???
Reference to non-existent field 'STAT'.
Error in ==> wfu_spm_getSPM2_conj at 531
spm('FigName',['SPM{',SPM.STAT,'}: Results']);
Error in ==> spm_getSPM at 14
[SPM,xSPM] = wfu_spm_getSPM2_conj;
Error in ==> spm_results_ui at 260
[SPM,xSPM] = spm_getSPM;
??? Error while evaluating uicontrol Callback.
---
Using the SPM checkreg function confirms that the ROIs appear to be in
register with their corresponding anatomical volumes. We've also tried
several variations like reorienting (but not reslicing) the binary ROI
mask, not reorienting the mask and instead copying the appropriate .mat
file, and even using the ROI .img file without creating the binary mask
in IMcalc -- all options seem to result in the same errors.
There was a post last year with this same error, but it did not get a
response on the list:
http://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind04&L=spm&P=R227430&I=-1
Any help explaining the error or how to correctly use our
subject-specific ROI files would be greatly appreciated. Thank you
very much,
Sriyesh Krishnan
Duke University Medical Center
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