Medical nuclear physics is the branch of medical physics pertaining to the therapeutic and diagnostic application of radionuclides, excluding those used in sealed sources for therapeutic purposes, the analysis and interpretation of performance measurements associated with radiation imaging equipment and performance oversight of radionuclide calibration equipment associated with the use and production of radioclides, the analysis and interpretation of measurements and calculations associated with patient organ doses, and the radiation safety aspects associated with the production and use of such radionuclides.