Hi Qiang
I am not sure what you mean. The FA maps produced by dtifit are normalised variances of the respective tensor eigenvalues and are in [0, 1], not z scores.
Cheers
Stam
On 16 Oct 2013, at 18:44, qiang wang wrote:
> Dear Experter
> Why the FA value of DTI nin FSL is expressed in z score? What is the reason to do like this? What is the problem if I do not use z score when i do FA average?
> Thanks,
> Qiang
>
|