ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
Cancer treatment plan. Screenshot of a radiotherapy treatment plan for targeting lung cancer (centre) using a linear accelerator. This plan has been superimposed on a magnetic resonance imaging (MRI) scan of the affected area. Linear accelerators are used in radiotherapy as a source of high-voltage X-rays, which can deliver a precisely targeted dose of radiation to treat some cancers. Here, the design is for three differently angled beams, which converge on the tumour.
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