Treatment delivery includes identifying correct patient, escorting patient to treatment room, assisting patient onto the treatment table, positions patient for treatment, delivers radiation from the control room and assists the patient in exiting the treatment room. The employee must be able to have full mobility and ability to participate in vigorous activity such as walking in and out of the treatment room, all day, lifting of potentially heavy cerrobend blocks and electron cones, and transferring and moving patients, as necessary.