I.-In liaison with healthcare professionals, the Minister for Health or the body designated by him draws up and distributes a guide defining the medical indications justifying procedures exposing patients to ionising radiation, in particular those most commonly used. It is updated periodically to take account of changes in techniques and practices and is distributed to those requesting and performing the procedures. This guide contains specific information for :
1° Procedures concerning children ;
2° Procedures involving pregnant women;
3° Nuclear medicine procedures involving breast-feeding women;
4° The most high-risk procedures, in particular those performed in the fields of radiotherapy, radioguided interventional procedures and CT scanning;
5° Procedures performed as part of organised screening for the diseases mentioned in article L. 1411-6.
II – For medical indications not defined by the guide, the justification for the procedure is based either on recommendations from the High Authority for Health, or on the concordant opinion of experts in accordance with the state of scientific, medical and technical knowledge and taking into account the health risk for the patient.