More than half of the cancer patients are treated with radiation therapy at same time during their course of treatment. The field of radiation oncology is also constantly growing which benefits with higher cure rates, fewer side effects, better quality and shorter treatment time. New technologies provide 3- D images of tumours that can precisely target radiation beams to the cancer, limiting damage. Many clinical trials are in the process of investigating drugs that can sensitise cancer cells to the effects of radiation, making them easier to destroy. It is estimated that by 2023, the radiation therapy equipment market will reach a CAGR of 7%. Recent research also focusses on the use of AI to deliver radiation therapy.