On the days you get radiation, you’ll lie on a table while the machine is placed over you. You may have to wear a hospital gown. Treatment is a lot like getting an X-ray, only it takes longer – about 15 to 30 minutes. You should plan on being there for about an hour total.
At the start of the session, a radiation therapist may use blocks or shields to protect parts of your body that don’t need to be exposed to radiation. The therapist then lines up the machine so that radiation is directed to the spot that was marked during the simulation. You may see lights on the machine that are lined up with the marks on your skin. When you’re ready, the therapist leaves the room and turns the machine on. You may hear whirring or clicking noises, like the sounds of a vacuum cleaner, while it’s is being given. You may be asked to hold your breath for a short time. During the session, you’ll be able to talk to and hear the therapist over an intercom. You can’t feel radiation, so it doesn't hurt. You won’t be radioactive afterward.