Dear All:
In one of my study, all DTI parameters including FA, longitudinal
eigenvalue, perpendicular eigenvalue, and mean diffusivity are greater
in healthy controls than in patients. I was puzzled by the greater
perpendicular eigenvalues of healthy controls, because it usually
indicates worse integrity of white matter. Can it be explained by the
cross fibers in the voxel?
Best Regards
Jiansong
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Jiansong Xu, M.D., Ph.D.
Dept. of Psychiatry
Yale Medical School
2 Church St., Suite 215
New Haven, CT 06519
Tel: 203-785-5306
Fax: 203-737-3591
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