The purpose of these proposed rule changes is to maintain required compatibility with the U.S. Nuclear Regulatory Commission by updating department rules for the medical use of radioactive materials and temporary jobsite requirements. Some proposed rule amendments will clarify how the department recognizes out of state licenses that use radioactive materials in the State of Florida. Other 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.