The purpose of this proposed rule development is to maintain compatibility with the U.S. Nuclear Regulatory Commission by updating the department rules for the medical use of radioactive materials and temporary jobsite requirements. The proposed rule will also clarify how the department recognizes out of state licenses that use radioactive materials in the State of Florida. The substantive changes will establish new rules and change some existing rules regarding training and experience requirements for users, requirements for use and calibration of high dose rate remote afterloaders, and gamma stereotactic radiosurgery units.