Radiotherapy is a highly precise cancer treatment that uses targeted radiation to destroy cancer cells while sparing healthy tissue. It is widely used for solid tumours, including cancers of the breast, lung, head & neck, and pelvis. Modern radiotherapy techniques, such as IMRT, IGRT, and VMAT, allow physicians to deliver radiation doses with unmatched accuracy. The treatment can be curative or palliative, depending on the patient’s condition. Radiotherapy often works best when combined with surgery or chemotherapy, providing a multimodal approach to cancer care. Sessions are typically short and painless, though some patients may experience mild side effects such as fatigue or skin reactions. The team continuously monitors treatment progress using advanced imaging tools to ensure optimal results. Radiotherapy is also effective in reducing tumour size, managing symptoms, and improving the quality of life for patients with advanced cancers. Patient safety and comfort are top priorities during every session. Personalised planning ensures the right dose at the right location. Radiotherapy can target tumours that are difficult to operate on, offering hope for many patients. It also plays a vital role in preventing cancer recurrence after surgery. With modern technology, treatment is faster, safer, and more effective than ever before. Ongoing research continues to enhance outcomes, making radiotherapy a cornerstone of modern oncology.