Neuro-oncologist and palliative care specialist, Dr. Akansksha Sharma, talks about radiation treatment for brain tumors. Radiation oncology includes techniques such as external beam radiation therapy (EBRT) and brachytherapy. External beam radiation therapy involves the use of a machine, such as a linear accelerator, to deliver radiation beams from outside the body to the tumor site. The treatment is carefully planned and delivered over a series of sessions, usually on a daily basis. Brachytherapy, on the other hand, involves the placement of a radiation source directly into or near the tumor, allowing for a higher dose of radiation to be delivered locally while minimizing exposure to surrounding healthy tissues.