Use of high energy X-rays (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the primary medical use of high-energy X-rays?
What is the primary medical use of high-energy X-rays?
Treating cancerous cells
Why do X-rays require careful planning in radiotherapy?
Why do X-rays require careful planning in radiotherapy?
They damage any cell they penetrate
What is the main goal of radiotherapy techniques?
What is the main goal of radiotherapy techniques?
Maximise tumour dose, minimise healthy tissue
What energy level is used for deeply situated tumours?
What energy level is used for deeply situated tumours?
Higher energy levels
Which material is used as shielding to protect healthy tissue?
Which material is used as shielding to protect healthy tissue?
Lead
What is the purpose of collimating the X-ray beam?
What is the purpose of collimating the X-ray beam?
Focus radiation and reduce scatter
Why are multiple weak beams used from different angles?
Why are multiple weak beams used from different angles?
To converge for high dose at tumour
In the isocentric technique, where is the tumour positioned?
In the isocentric technique, where is the tumour positioned?
At the centre of rotation
What is the role of CT or MRI scans in radiotherapy planning?
What is the role of CT or MRI scans in radiotherapy planning?
To map tumour position and shape
What property of X-rays makes them effective in killing cells?
What property of X-rays makes them effective in killing cells?
They can ionise atoms in cells