[Mristudio-users] all positive eigenvectors!

[Mojdeh]

Hi there,

I have 49 slice DTI image of brain with 2 B0 +  23 gradient directions. 
I loaded the image and calculated the tensor, eigenvectors, ... for the 
image and then save the results in analyze format. However, when I load 
the eigenvectors into MATLAB and look at the x-y-z coordinates of 
eigenvectors they are all positive numbers which doesn't make any sense 
to me! Does anyone know what might be the problem?

Thanks a lot in advance,
Mojdeh