Dear Chris,

many thanks for your reply and your time.

I have checked as you suggested and there is a discrepancy between plane and slice resolution in different combinations all among image series that I converyed to .nii. So, do you suggest to "convert" a single 3D image of those acquired (for example? just a good axial T1?), or was your suggestion to modify acquisition proprierties for next patients? 

Furthermore, I have look for  "Reorient images when loading", to interpolate to isotropic, but you can see attached what option I have.

I have already asked to the servicedesk to install MRIcroGL. I will try as soon as possible, I have to wait for university's technicians to install something on my pc. 

As conclusion, is your opinion that I have to to accept that these images will show anyway a poor resolution. Am I right? 

Many thanks, again