Thank you for your reply. Unfortunately, both of your method did not work.

And the command window showed:
C:\Users\Administrator>F:\6dcm\dke_ft.exe F:\6dcm\ft_parameters.txt
Starting matlabpool using the 'local' profile ... connected to 2 labs.

Start date and time: February 05, 2018 11:34:21
Fiber Tractography with DKI version 1
July 2015
Optimizing kurtosis dODF...Error using dke_ft (line 132)
The number of voxels in the FA image and the tensors must match!
Make sure map_interpolation_method.flag = 0 for tensor fitting or reconstruct
the fa image from the DT.mat using the Nifti header from the diffusion weighted
images

Could you please give me some advice about what should I do about it?