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. Perform and guide dosimetry staff with patient-specific radiation measurements and calculations and assist the development/selection and specifications of any complex devices required to direct/protect critical normal tissues.