Key term for Edexcel GCSE Physics, used in Medical Uses.
A cancer treatment where a radioactive source (usually emitting gamma rays) is kept outside the patient's body and directed at the tumour.
External radiotherapy appears in Edexcel GCSE Physics revision content for Radioactivity, especially Medical Uses and Tumour Treatment.
Create a free account to access Edexcel GCSE Physics revision notes, track progress, and practise related key terms.
