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Your shielding mask makes sure that the x-rays reach only the parts of your body that need treatment. It protects the nearby parts from radiation.
You wear the mask for just a short time while you have your radiotherapy treatment.
Technicians in the mould room make the mask.
It is made of thin, clear, lightweight plastic. The technicians mould it to fit the part of your body being treated. Then they make a metal shield to fit on top of it. Later, your radiographers make marks on the mask so they know exactly which part of your body to treat.
Before the technicians can make your mask they need to take an impression of part of your body.
They usually do it with Plaster of Paris bandages, and this is why you will visit the mould room. One visit should be enough, although afterwards it may take a few days to make the mask.
It doesn’t hurt, but it can be a bit messy. It is best to wear your older clothes!
When you arrive the mould room staff will explain what they are going to do, and answer any questions you have.
Your visit is likely to last about an hour – but it could take up to half a day, so please allow plenty of time.
If you have any queries about your visit, please ask your Oncologist or Clinical Nurse Specialist.
