I would like to get a clarification on what some the the files generated by FreeSurfer recon-all
based on the URL https://surfer.nmr.mgh.harvard.edu/fswiki/ReconAllOutputFiles
The web pages says the nu.mgz "This is a intensity normalized volume generated after correcting for non-uniformity in the orig.mgz". I just need a clarification the intensity normalized is just a global scaling and the correction for non-uniformity is the bias field correction. I was wondering if the orig.mgz is bias field corrected to generate the orig_nu.mgz and the intensity normalized to generate the nu.mgz.
Finally what is the norm.mgz image. I cannot final details on how it is created.
the norm is the output of the subcortical intensity (nonuniformity) correction detailed in the 2002 paper On Thu, 11 Jan 2018, Aaron Tanenbaum wrote:
I would like to get a clarification on what some the the files generated by FreeSurfer recon-all
based on the URL https://surfer.nmr.mgh.harvard.edu/fswiki/ReconAllOutputFiles
The web pages says the nu.mgz "This is a intensity normalized volume generated after correcting for non-uniformity in the orig.mgz". I just need a clarification the intensity normalized is just a global scaling and the correction for non-uniformity is the bias field correction. I was wondering if the orig.mgz is bias field corrected to generate the orig_nu.mgz and the intensity normalized to generate the nu.mgz.
Finally what is the norm.mgz image. I cannot final details on how it is created.
freesurfer@nmr.mgh.harvard.edu
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Aaron Tanenbaum -
Bruce Fischl