MNI coordinates to subject's EPI

Hello stars,

I am trying to figure out how to map an MNI seed location (e.g. PCC at [0,-53,26]) to the voxel coordinates of an individual subject’s EPI space - using the outputs from fmriprep.

I think that std2imgcoord can be used for this kind of thing (MNI to native space)).

I know that the MNI->T1 transform is stored at “/anat/-MNI152NLin2009cAsym_to-T1w_mode-image_xfm.h5”.

I guess I specify this using the -warp argument to std2imgcoord?

Now the affine from EPI to T1 is stored somewhere in the work dir (maybe /bold_reg_wf/bbreg_wf//mri_coreg/ ? see my recent post here).

Assuming I get this affine and correctly inverse it, does that go as the -xfm argument to std2imgcoord?

Any help appreciated!
Dror

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