8 DynaMesh is your friend

In ZBrush, I select one of the elements I imported and go to Tools> Geometry>DynaMesh. The only value you need to change is the resolution. By default it’s set at 128. Click DynaMesh to give it a try. I play around and find that 800 seems good enough. I save on a regular basis here, as pushing the definition too high can cause crashes on some computers.