The holder of the radiotherapy or brachytherapy authorisation makes the necessary arrangements with the professionals concerned for :
1° The final validation of the delineation of target volumes and organs at risk, which is the responsibility of a radiotherapist with the qualifications listed in article D. 6124-133 of the team ;
2° The preparation of each treatment validated by a radiotherapist with the qualifications listed in article D. 6124-133 and by a medical physicist on the team.