What should you know about MR-linac radiotherapy?

An MR-linac brings an MRI scanner and a radiation treatment machine into one system. MRI images can show changes in soft tissue during a treatment session, allowing the team to check the position of the tumour and nearby organs. The radiation team may adapt the plan or delivery according to the images and safety checks. Suitability depends on the tumour location, movement, previous treatment, implanted devices and the purpose of radiotherapy. It may be considered for some brain, breast, bowel, cervical, womb, head and neck or skin cancers, but it is not appropriate for every person.

At planning visits, tell the team about metal implants, pacemakers, medication patches, kidney problems, pregnancy possibility and difficulty lying still. You may need to follow instructions about eating, drinking or bladder preparation for the body area being treated. The machine is open at both ends, but you still need to remain in position while images and radiation are delivered. Treatment schedules vary, and the team will explain skin care, activity, medicines and follow-up for your plan.

Contact the radiotherapy team promptly for worsening pain, new weakness, repeated vomiting, confusion, fever, severe skin reaction, inability to drink, or any symptom that is rapidly changing. Seek emergency help for severe breathing difficulty, collapse, a seizure or sudden neurological change. Do not wait for the next appointment when symptoms feel urgent.

Ask why MR-linac is being considered, how MRI guidance changes your plan, what preparation is required, and how long each visit may take. Discuss expected short-term effects, effects on nearby organs, alternatives such as standard radiotherapy, and who to contact outside appointment hours.