All questions · What each treatment is doing

What happens on my first treatment day?

Your team will check who you are, answer anything still worrying you, and then lie you down exactly as you were for the planning scan.

The machine moves around you without touching you, and you will not feel the radiation. The treatment itself takes a few minutes.

Written by two physicians. Checked against patient information from the US National Cancer Institute and Cancer Research UK.

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Content last updated 25 September 2026 · How we write these cards · Report a problem with this card

These cards are for learning. They are not medical advice and do not replace talking with your own doctor.