A radiation shield assembly includes a shield configured to block radiation and a rail assembly configured to position the shield in between the radiation table and a radiation source. The shield is movable between a retracted position and an extended position along a length of the rail assembly. In the extended position, the shield extends along a portion of a radiation table and blocks radiation from the radiation source to the portion of the radiation table. In the retracted position, the shield exposes at least some of the portion of the radiation table to the radiation.
