Hello,

I have two questions:

First:
I made left hemisphere anatomical ROIs using the freesurfer cortical
parcellation atlas and fsaverage's data. However, when I convert these ROIs
from .mgz to an SPM-compatible format (.img), the LH ROIs show up on the
right. Any idea on how to resolve this problem?

The ROIs I need are customized (i.e., I needed to merge some of the areas,
and did so via relabeling), but for simpler purposes let's just say I used
lh.BA44.label for now. Here are the commands I used:

cd $FREESURFER_HOME/subjects/fsaverage
mri_label2vol --label label/lh.BA44.label --temp mri/T1.mgz --identity --o
lh.BA44.mgz
mri_convert lh.BA44.mgz lh.BA44.img

Second:
I would like to normalize these anatomical ROIs to MNI space in SPM. To do
this I was thinking about taking fsaverage's anatomical file, converting it
to an SPM-compatible format, estimate the normalization parameters from
fsaverage's anatomical to SPM's T1 template, and then writing those
parameters to the anatomical ROIs. Therefore am I correct in converting
fsaverage's T1.mgz to .img since I am specifying that as the template in
the mri_label2vol above?

Thanks!

-- 
Eduardo Europa
Ph.D. Student, Aphasia and Neurolinguistics Research Laboratory
President, Queer Pride Graduate Student Association
Co-Chair, Graduate Leadership Council
Member, LGBTQA Campus Advisory Network

Northwestern University
Department of Communication Sciences and Disorders
Frances Searle Building
2240 Campus Drive
Evanston, IL 60208-3570
eur...@u.northwestern.edu
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