Hello Freesurfer Developers and Community,

I am looking to map a ROI.nii based on the MNI152 template to the fsaverage pial surface. 

I have used the following commands

Bbregister —s fsaverage —mov MNI152.nii —reg register.dat —init-fsl —12 —t1

Then 

mri_vol2surf —src ROI.nii —out ROI.mgh —srcreg register.dat —hemi lh 

The ROI appears to be in the right place however is very blotchy. Have I missed a step? Or is this correct?

See bellow a picture of the ROI highlighted in FSL and in tksurfer after mapped using the above.

Thank you for your support,

Best, Derek 

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Derek Sayre Andrews, MSc
PhD Candidate

The Sackler Institute for Translational Neurodevelopment

Department of Forensic and Neurodevelopmental Sciences 

Institute of Psychiatry, Psychology & Neuroscience, King's College London

Telephone: +44 (0)20 7848 5701
Email: Derek.Andrews@kcl.ac.uk