Some points are outside the definition of the non-linear MNI registration

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1

Hi Brainstorm team,

After updating Brainstorm, I encountered an error when trying to Add MNI parcellation. The message is:

***************************************************************************
** Error: Line 250: 错误使用 cs_convert
** Some points are outside the definition of the non-linear MNI registration.
** Please compute a linear MNI normalization to convert these points.
** 
** Call stack:
** >cs_convert.m at 250
** >mri_reslice_mni.m at 64
** >import_mri.m at 236
** >import_mniatlas.m at 137
** >bst_call.m at 28
** >tree_callbacks.m>@(h,ev)bst_call(@import_mniatlas,iSubject,sMniAtlases(i),1) at 646
** 
***************************************************************************

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My T1 MRI has already been registered to MNI space, so I’m wondering whether this behavior could be related to the recent update.
Could you please advise on possible causes or a workaround? Thank you in advance for your help.

Best regards

MNI normalization: “MNI-CAT12” vs “MNI-Segment”
2

The version of my MATLAB is 2022b

3

As the error message indicate, the trouble is that there the (non-linear) MNI normalization does not have the transformation for each of the points in the atlas, thus it fails.

You can compute a linear MNI normalization (maff8) on your MRI
https://neuroimage.usc.edu/brainstorm/Tutorials/ImportAnatomy#MNI_normalization

4

Please note that adding anatomical parcellations using the MNI coordinates, is not as accurate as computing those anatomical parcellations using MRI segmentation software tools such as FreeSurfer or CAT12

5

Thank you! Your guidance solved the issue. Much appreciated.