[3-D conformal radiotherapy procedure and registration of pre- and intra-radiotherapeutic data]. / Procédure de la radiothérapie conformative tridimensionnelle et mise en correspondance des données pré- et per-radiothérapiques.

The authors describe the different steps of 3-D conformal external irradiation. They mention as well two procedures of isocentric repositioning which are mandatory for the matching of anatomical data: the first one is acquired before the simulation and the second one just before the radiotherapy session.