Radiation therapy uses high-energy x-rays or other particles to destroy tumor cells. This therapy helps in slowing or stopping the growth of a brain tumor. It is typically given after surgery and possibly in combination with some other therapy. Radiation oncologists will guide you best. The average cost of radiation therapy usually comes around Rs. 30,000 to Rs. 20,00,000 depending on which type of radiation technique used. However, the prices get affected by hospitals and their location as well. You can refer our list - Best Cancer Hospital in India, to find hospitals that will provide adequate facilities & services.