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AS 2 Waves, Photons and Medical Physics

Quick questions on Medical physics: X-rays, ultrasound and radioactive tracers - CCEA A-Level Physics

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Explain why a coupling gel is used in ultrasound scanning. [2 marks]
What is q2?
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State two properties a radioisotope should have to be a good medical tracer. [2 marks]
What is q3?
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An ultrasound pulse returns from a boundary 6.0×105 s6.0 \times 10^{-5}\ \text{s} after emission. The speed of sound in tissue is 1500 m s11500\ \text{m s}^{-1}. Find the depth of the boundary.

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