Targeted radiotherapy to the brain

A planning scan shows the tumour's position and its relationship to sensitive structures. Depending on the number, size and location of areas being treated, your team may recommend focused treatment to one site, several sites, or a broader region. A frame, mask or other support helps keep your head still.

Radiotherapy can be considered for a brain tumour or for cancer that has spread to the brain. The aim may be to control a known area, reduce pressure-related symptoms or protect brain function. Your plan may also include surgery, medicines to reduce swelling, or treatment directed at cancer elsewhere in the body.

Tell the team about headaches, seizures, weakness, vision changes, medicines and any implanted device. Ask whether you can eat, drink and take regular medicines before the appointment, and arrange transport if medication or tiredness could affect you. Keep the mask or support instructions clear and tell staff if it feels too tight.

After treatment, rest and track changes in headache, balance, speech, memory or strength. Take steroids or anti-seizure medicines exactly as prescribed and do not stop them suddenly without advice. Hair or skin changes can occur in the treated area, and tiredness may build over time.

Seek urgent help for a first seizure, a seizure lasting longer than expected, sudden weakness, new trouble speaking, loss of consciousness, repeated vomiting or a rapidly worsening headache. Contact your oncology team about increasing drowsiness, confusion, balance problems or vision changes, even if symptoms appear gradually.

Ask what area will be treated, why this approach fits your scan, whether a mask or frame is needed, how many appointments are planned, and whether you need steroids or seizure medicine. Ask which symptoms mean emergency care and how follow-up imaging will be scheduled.