The increase in requests for diagnostic imaging studies has grown exponentially in the last decade, especially those of computed tomography (CT) and interventional and hemodynamic processes that deliver doses considered threshold for deterministic effects regarding the damage caused by X radiation.

Referring physician medical indication of imaging studies (in paper o digital) represents the key element for the care of a patient in a diagnostic imaging service.

It is therefore essential to have a process to evaluate the appropriate criteria to decide the performance of a study. It is essential for the success of the process that radiologists, referrals and all the paramedical team have in mind the culture of radioprotection.

The International Radiation Protection Association (IRPA) expressed in 2008 "The concept of culture relates to the ideas, beliefs and customs that are shared and accepted by people in a society, there are no differences between sectors (medical, nuclear, industry), whereby radiation protection culture can be understood as a combination of habits and knowledge of radioprotection in all its aspects for workers, patients, population and the environment, and in all situations, combining scientific and social dimensions ".

The aim of our work is to show our referring physician indication review and evaluation process to asses justification of X radiation examinations.