Abstract
The Nuclear Safety and Radiation Protection French Institute (IRSN) presents its latest assessment from up-to-date diagnostic reference levels (DRL) national data in nuclear medicine (NM). NM departments annually send data to IRSN to estimate the representativeness of current DRLs. Complementary analyses of the data have been performed to evaluate the influence of equipment evolution on practice and patient radiation exposure. Based on data from almost 90% of the French NM departments, some DRL update are proposed. The analysis of positron emission tomography data show that the more the time of flight technology is available on equipment, the lower is the administered activity to the patient. IRSN recommends updating DRL regulation with current and relevant examination data. The influence of technology evolution appeared to be positive for patient exposure and the results showed an obvious involvement of professionals in the radiation dose optimisation process.
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