The radiation oncologist, your doctor during treatment, is a doctor who specializes in the use of radiation for treating cancer. The radiation oncologist prescribes, plans and directs your treatment and is responsible for deciding what method of radiation therapy is indicated for your case.
The medical physicist works with the dosimetrist and the radiation oncologist to design your treatment plan. The medical physicist also runs frequent safety checks and makes sure that the equipment is working properly.
The dosimetrist works closely with the radiation oncologist and the medical physicist in designing your treatment. The dosimetrist determines the best positions and times that the source should stay within the treatment area, and develops strategies on how best to avoid giving radiation to healthy tissue in your body.
The radiation therapist conducts your treatment each session. He or she positions you on the treatment table so that radiation can be delivered, operates the equipment, and works very closely with the medical physicist during your treatment.
The radiation therapy nurse coordinates your care, helps you learn about treatment, and tells you how to manage any side effects that you might experience.