Hi Da-Yea
you would need to compute the jacobian of the warping and apply it at each voxel to scale the volumes (accounting for the warping).
cheers Bruce On Fri, 29 Mar 2019, Song, Da-Yea wrote:
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Hello,
I’m trying to extract regions (mri_extract_label) of interest from the aseg.mgz files and compare them to our manual segmentations. I’ve warped these ROI masks onto our native space. I’ve noticed on the forum that there were mentions of discrepancies in the volumes from aseg.mgz and aseg.stats due to partial volume correction. If I were to calculate the volume using the ROI extracted masks (that have been warped on to the native space), how can I calculate for partial volume correction? Any suggestions would be greatly appreciated!
Thank you,
Da-Yea
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