[sscott]

Yes sorry that last paragraph is a bit of a munge it should read:

Rendering it on the other hand would be relatively trivial with a marching cube algorithm AND using one or more rays per pixel [to ray trace against the hull constructed by the simplified marching cube algo - for DXR]

Having thought about it a bit more since (in the other answers) you may be better off with a signed distance field or constructing a specialised BVH yourself as this is a simplified case.