The implementation of the optimisation principle referred to in 2° of Article L. 1333-2 aims to keep the dose of ionising radiation as low as reasonably achievable in order to obtain the medical information sought or to achieve the therapeutic objective of the exposure.
Optimisation is implemented when equipment is selected and during the performance of each procedure. It includes the assessment of radiation doses or the activity of radioactive substances administered and the establishment of procedures provided for by the quality assurance system.