Radiotherapy for adults with a brain tumour
If you have been diagnosed with a brain tumour, there are a variety of possible treatment options. One of these is radiotherapy. It may be used on its own, or in conjunction with other treatment options, such as neurosurgery or chemotherapy.
What is radiotherapy?
Radiotherapy uses controlled doses of invisible, high energy beams of charged particles to destroy tumour cells whilst causing as little damage as possible to surrounding cells.
It may be used:
- where surgery isn’t possible
- after surgery to kill any remaining tumour cells
- to prevent a tumour from returning
- to slow down the growth of the tumour.
What happens during radiotherapy treatment?
During treatment you will lie on a treatment couch wearing a special radiotherapy mask that is attached to the couch. The radiographer will take a few minutes making sure you are positioned correctly, then will leave the room. Don’t worry though, they’ll still be able to see and hear you during the treatment and they’ll be able to see and hear you too.
Some radiotherapy machines move around you during treatment; others will look more like a CT scanner.
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Each treatment is called a ‘fraction’. Each fraction can be between a few seconds to a few minutes. Your appointment, however, will be considerably longer, as medical staff will take time making sure you’re in the right place.
The period of time over which your radiotherapy is spread varies from person to person, but it’s common for it to last for around four to six weeks.
An example of a typical radiotherapy plan is treatment once a day, Monday to Friday, with a break at the weekends.
Before the treatment begins, your medical team will be able to tell you how many sessions you’ll need, how often and over what period. They’ll also be able to give you a guideline for how long each visit to the hospital should take.
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The full dosage of radiation is carefully calculated, depending partly on the size, type and location of the tumour. It is then divided into fractions for two reasons:
- The sensitivity of a cell to radiation depends on where it is in its growth cycle. By giving radiotherapy in several doses it ensures that the tumour cells will receive radiation whenever they are in their most sensitive stage
- To allow healthy cells to recover between treatments. Cells that grow and divide quickly (tumour cells)
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No, you can’t feel radiotherapy nor is there any heat from it. The machine can be quite noisy though.
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Generally, you’ll be given radiotherapy as an outpatient, which means going into the hospital for each fraction, after which you can go home.
A stay might be needed if you are also receiving chemotherapy, or if you are unwell.
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