Assurance of the accuracy of dose delivery, patient position, treatment unit parameters and settings used for a patient’s treatment: including correct transfer of parameters between the CT, CBCT, CT/PET, MRI, US, treatment planning system and the treatment unit along with periodic review of each patient’s chart. Physical demands: Frequently sitting, reaching above shoulder and at/below shoulder level, handling, and finger/hand dexterity; occasionally lifting and carrying up to 50 lbs and forward bending while standing or sitting; and seldom pushing, pulling, or carrying up to 10 lbs.