It could be anything related to the T1-weighting, so T1 itself or PD. It is possible for the T2* to affect it, but usually the echo time is too short for it to make much of a difference. I could imagine some other indirect effects because of the normalization itself. The normMean was not added for anything specific, I just thought it might be useful at some point.
On 12/13/18 10:40 AM, Keith Harenski wrote: External Email - Use Caution Hello, What would local, individual differences in normMean voxel intensities signify? Is this related to any physical properties of the brain, or is the more of a QA measure for the white matter segmentation? Thank you, Keith -- Keith Harenski Mobile MRI Manager Mobile MRI Core and Clinical Cognitive Neuroscience Laboratory The Mind Research Network 1101 Yale Blvd NE Albuquerque, NM 87106-4188 Office (Cell): 505.504.1338 | Fax: 505.272.8002 kharen...@mrn.org<mailto:kharen...@mrn.org> | www.mrn.org<http://www.mrn.org> | www.lrri.org<http://www.lrri.org> _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu<mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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