A robotized system (1) for positioning a patient with respect to at least one source of a particle beam, includes the at least one source, two robotized arms (3, 4), a treatment couch (5) for the patient and a logic unit which controls and coordinates the movements of the two robotized arms, whereinthe at least one source is fixed,each end of the treatment couch (5) for the patient is connected to the end of one of the robotized arms (3, 4),the at least one particle beam emitted by the at least one fixed source is always included within the space between the ends of the two robotized arms (3, 4).
