My goal is to create histograms of RD and AD.
My question is whether AD and RD have a standard range and unit like "mm^2/s" and what range is meaningful for a the histogram.
I have been comparing the eigenvalues from 3dDWItoDT using both the linear and nonlinear solution and to FSL's dtifit.
3dDWItoDT -linear gives me the following range of lambda 1 values:
-5.29858 to 6.77981
3dDWItoDT -nonlinear gives me the following range of lambda 1 values:
0 to 14951.3
A histogram of the nonlinear volume indicates that the really high values greater than 3 are primarily outliers that will get masked out. But even then i still have what seems like really high values for diffusion?
dtifit gives me the following range of lambda 1 values:
0 to 0.006446
The dtifit ranges seem reasonable. Should I just be rescaling my AFNI data?
Thanks
