Radiation oncology is built upon four fundamental sciences:
Early in training, physics, radiobiology and anatomy are fairly important. As knowledge of these topics improves, learning about pathology is more important as it is also used in daily practice as a radiation oncologist.
Additionally, the principles of radiotherapy techniques are of significant importance. Combination of these techniques, together with a firm understanding of the basic sciences, allows the radiation oncologist to make accurate decisions when choosing to treat a patient.