High-energy X-rays are used in the treatment of a cancer tumour inside a patient’s body - AQA - A-Level Physics - Question 5 - 2018 - Paper 5
Question 5
High-energy X-rays are used in the treatment of a cancer tumour inside a patient’s body. The patient is given a series of scans before the treatment is started.
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Worked Solution & Example Answer:High-energy X-rays are used in the treatment of a cancer tumour inside a patient’s body - AQA - A-Level Physics - Question 5 - 2018 - Paper 5
Step 1
Using X-rays of the correct energy to locate the precise position / size of the tumour
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Answer
High-energy X-rays are employed to accurately identify the dimensions and specific location of the tumor within the patient's body. This precise localization is critical to ensure targeted treatment.
Step 2
Minimizing time of use
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Answer
The scans are designed to minimize the duration of exposure for the patient, thereby reducing the risk of harmful side effects associated with X-ray exposure.
Step 3
Irradiating tumour from different directions
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Answer
By attacking the tumor from multiple angles, the treatment can be optimized to maximize the dose delivered to cancerous cells while sparing surrounding healthy tissue.
