Unable to view 3 channel in 3D slicer, but able to see them in mipav

I am trying to visualize a .nii image in 3D Slicer, but I am not able to do so. Yet if I try the same in mipav, I am able to do so. How should I proceed to handle the image if at all any solution is possible? I am thinking that there is a problem in the header of the .nii image or the .raw information available.