Technically speaking, yes. But they're way off on the other side of the EM spectrum, giving them dramatically different properties. You can shield against radio with a shell of any conductive material -- even a wire mesh for longer wavelengths -- but X-rays are only absorbed by high-atomic-weight atoms, like lead.

Of course the are, but - if I'm correct - they don't produce an electromagnetic field. And are not shielded by a bit of mesh wire (I work with desktop microCT machines...).