The radiation therapist gives you the radiation treatment, but the radiation therapy team comprises of other experts for radiation therapy and they all together assess, discuss and decide your treatment plan.
Multi-disciplinary team of professionals are involved in the treatment planning for a cancer patient undergoing radiotherapy on an individual basis. Professionals involved in radiation therapy treatment include:

Radiation oncologist – The medical physician specialized in radiation therapy for cancer treatment. This person plans your radiation treatment.

• Radiation oncology nurse – Nurse specially trained in cancer treatment and managing side effects.
• Medical radiation physicist – Ensures the functioning of the radiation equipment and that administers the exact dose to patient as prescribed by the radiation oncologist.
• Dosimetrist – A dosimetrist is specialized personnel who can design, generate, and measure radiation dose calculations working along with the medical radiation physicist and radiation oncologist. This person helps the radiation oncologist in deciding treatment plan.