What is radiotherapy done with?

A linear accelerator creates high-energy radiation beams and directs them toward a selected body area. Before treatment, the team uses scans and planning software to shape the beams, choose angles, and position you consistently. A mould, mask, or small skin marks may help you hold the same position for each session.

External-beam radiotherapy treats from outside the body. Internal radiotherapy, also called brachytherapy in some settings, places a radioactive source in or close to the treatment area. The method depends on the cancer type, location, treatment aim, and nearby healthy organs. Radiation treatment itself is not felt, but the planning and positioning process can take time.

Attend the planning appointment and tell the team about implanted devices, pregnancy possibility, medicines, and previous radiotherapy. Follow skin-care and appointment instructions, and keep your treatment area clean unless your team advises otherwise. Report new symptoms early so supportive care can be adjusted while treatment continues.

Contact the radiotherapy team for worsening skin reaction, trouble swallowing, persistent diarrhoea, repeated vomiting, new pain, or unusual tiredness that interferes with drinking or daily activities. Seek urgent help for severe breathing difficulty, sudden confusion, or uncontrolled bleeding. The body area treated affects which side effects need prompt attention.

Ask which equipment and radiation method are planned, how the team will protect nearby organs, how often you will attend, and what skin or symptom changes should be reported. Ask whether you need transport or help at home on treatment days.