At Houston Methodist, the Senior Radiation Physicist is responsible for ensuring the safe and accurate use of radiation for therapy as prescribed by the Physician through oversight of the technical aspects of radiation therapy, including imaging, planning, treatment, and associated procedures, and protecting patients, staff and public from radiation harm. It includes acceptance testing of radiotherapy treatment and simulation equipment, calibration and characterization of radiation beams from therapeutic equipment including radiation quantity, quality, and distribution characteristics, and assessment of the mechanical and geometric optics for proper placement of the beam.