7 Jan
2008
7 Jan
'08
12:13 p.m.
Dear Freesurfers,
When comparing cortical gray matter volumes between groups it is appropriate to normalize subject's mean cortical volume in each cortical parcellation by their eTIV. Is there a corresponding value appropriate for normalizing cortical thickness? Would mean cortical thickness for a single hemisphere be an appropriate normalization factor? We are interested in comparing cortical thickness between a control group and a group of people with a degenerative brain disease.
Thanks very much, Paul
--
Paul Greenberg, Ph.D.
Radiology Department, University of California, San Diego
VA San Diego Healthcare System (116A-13)
3350 La Jolla Village Drive
San Diego, CA 92161
Phone: (858) 552-8585 ext. 2903
Fax: (858) 642-3836
pgreenberg@ucsd.edu