Hi All,

I have started to run the commands, but every time I have an error as follows:

**mrdegibbs dwi_den.mif dwi_den_unr.mif –axes 0,1**

mrdegibbs: **[ERROR] Expected exactly 2 arguments (4 supplied)**

mrdegibbs: **[ERROR] Usage: mrdegibbs in out**

mrdegibbs: **[ERROR] Yours: mrdegibbs dwi_den.mif dwi_den_unr.mif –axes 0,1**

or

**dwiextract dwi_den_unr.mif --bzero | mrmath –mean mean_b0_AP.mif –axis 3**

**[ERROR] Expected exactly 2 arguments (1 supplied)**

dwiextract: **[ERROR] Usage: dwiextract input output**

dwiextract: **[ERROR] Yours: dwiextract dwi_den_unr.mif**

mrmath: **[ERROR] unexpected value supplied for argument “operation” (valid choices are: mean, median, sum, product, rms, norm, var, std, min, max, absmax, magmax)**

Could you please tell me what’s wrong with it?

Thanks,

Gozdas