Senior Dosimetrist

Senior Dosimetrist

Job Code


Basic Function

Generates radiation therapy treatment plans and dose calculations necessary for patient treatment and in consultation with radiation oncologists and medical physicists.


The Medical Dosimetrist is a member of the radiation oncology team who has detailed knowledge of the overall characteristics and clinical relevance of radiation oncology treatment, is proficient in modern radiation oncology procedures i.e , 3DCRT, IMRT, VMAT, SRS/SBRT, 4D Gating  and has the education and expertise necessary to generate radiation dose distributions and dose calculations in collaboration with the medical physicist and radiation oncologist.

Principal Contacts

Has daily contact with patients, physicians, physicist, nursing staff, clerical personnel and all other disciplines as required.

Principal Duties

  1. Performs all aspects of treatment planning tasks including image registration, contouring normal structures, and generation of treatment plans.
  2. Together with the medical physicist, evaluates treatment plans to ensure that these fulfil the treatment prescription, considering dose-limiting structures and document dose in accordance with the Radiation Oncologist's prescription.
  3. Assists with treatment simulations and tumor localization on dedicated devices, including CT, MRI, and PET when indicated, for radiation oncology treatment planning.
  4. Supervises, performs, or assists in the planning of the fabrication of custom shields, wedges, and other beam modifying devices.
  5. Supervises, performs, or assist sin the planning of the production of moulds, casts, and other immobilization devices.
  6. Advises the therapist staff in the implementation of the treatment plan including: the correct use of immobilization devices, compensators, wedges, field arrangement, and other treatment variables.
  7. Performs calculations for the accurate delivery of the Radiation Oncologist's prescribed dose, document all pertinent information in the patient record.
  8. Performs, or assists in the application of specific methods of dosimetry including ion chamber, diode, or film measurement as directed by the Medical Physicist.
  9. Teaches applied aspects of medical dosimetry to students and residents, as assigned.
  10. Participates in clinical research for the development and implementation of new techniques.
  11. Participates in continuing education in the area of current treatment planning techniques, and advances in medical dosimetry.
  12. Maintains established policies and procedures, objectives, quality assurance program, safety, environmental and infection control standards.
  13. Prepares written documentation as required by the service, such as evaluation results, individualized treatment plans, progress reports and other such reports
  14. Maintains adequate records, statistics, documentation policies and procedures for radiation therapy.
  15. Advises the designated staff of all policy decisions and protocol that’s are related to Radiation Therapy Service, Hospital and Company.
  16. Participates and supports Saudization program.
  17. Enhances professional growth and development through participation in educational programs, current literature, in-service meetings and workshops.
  18. Performs other related duties as assigned or requested by Radiation oncology unit head or Medical Physicist.


  • Bachelor's Degree in Radiation Therapy.
  • Masters' Degree in Radiation Therapy or Medical physics preferred.


  • Minimum 5 years working at a radiation therapist, and
  • Minimum 5 years as dosimetrist post certification


Certifications/Other requirements as applicable

  • Passed the examination given by the American Registry of Radiology Technology (A.R.R.T) or its equivalent from their respective country.
  • Certification of the Association of Medical Dosimetrists (AAMD) is preferred, equivalent considered.
  • Meets the Saudi commission for health specialties requirements.
  • Must be proficient in English language. Arabic is desirable.