The present invention relates to the conveying assistance devices for facilitating a brachytherapy program. The present invention provides the output quantity of an optimized treatment plan, the part into consideration program is taken to have been carried out. The present invention provides in a such as update of sequence and dosing after each contact pin. The sequence for the treatment of plan is for example determined so that the step of program, wherein an error can have bigger influence, needs to be corrected by modifying later step, provide it is more early than step, wherein an error is unlikely and/or can have less influence.
