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:
External Email - Use Caution
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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